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https://ntrs.nasa.gov/search.jsp?R=19760023021 2020-05-13T02:58:53+00:00Z
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ASR Y M ISABBREV IATIONSSPACE TRANSPORTATION SYSTEM ANDASSOCIATED PAYLOADS
Abbt .&VIATIONS: SPATE TKAbSPUk'TATION SYSTEMAND ASSOCIATED PAYLGADS (NASA) 144 pHe $5.00 CSCL 051
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N76-30109
UnclasG3/82 49551
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S E P 1976
RECEIVED
1 _ ____INPUT BRANCH
NASA STI FACILITY
National Aeronautics andASpace dministrahon ^^^^ I
John F. Kennedy Space Center EKSC ORM G 7^3 *f.l 'ONE TIME FORM REPRINT NOT AUT NORIi FD' E
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_ ACRONYMS,ABBREVIATIONSSPACE TRANSPORTATION SYSTEM AND 9
ASSOCIATED PAYLOADS
Prepared Bye •
A, M. KOLLER, JR-.-IEPerformance Management and Tracking
Approvals
W. Ca RAINWATERChief, Management Planning and 'Control Office
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FOREWORD
This document was prepared in order to facili tate
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communications for the Space Transportation System (STS)
and Associated Payloads (see Glossary for definitions.
It contains a glossary and a listing of Acronyms and i;
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Abbreviations in current use, and is intended for use by j
those who write/interpret/prepare material for publication
relative to the Space Transportation System.
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It is recognized that the listing is not all inclusive
or complete. This document will periodically be updated to -^ r
provide a current listing of all approved STS and Associatedl
Payloads acronyms and abbreviations.
Recommendations relative to this listing should be
directed to:
Dr. A. M. Koller, Jr., SP-MPC, 867-21263
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SECTION I
GLOSSARY
This section contains a glossary of terms(and definitions) in current usage for theSpace Transportation System (STS) andAssociated Payloads.
ACC^PTANCE TESTSTests to determine that a part, component, subsystem, of facilityis capable of meeting performance requirements prescribed in pur-chase specifications or other documents specifying what consti-tutes the adequate performance capability for the item.
ASSEMBLYA number of parts, or subassemblies and/or any combination thereof,joined together to perform a specific function and capable of dis-assembly. The distinction between an assembly and a subassembly isdetermined by the individual application. An assembly in one in-stance may be a subassembly in another, where it forms a portion ofan assembly.
ATTACHING PARTAn item used to attach assemblies or parts to the equipment, or toeach other.
AUTOMATED PAYLOADS__To___Jswhich are supported by an unmanned spacecraft capa-
ble of operating independently of the Space Transportation System
AUXILIARY STAGEA small propulsion unit used with a payload, Nhen required. One ormore of these units may be used with a payload, to provide the addi-tional velocity required to place a payload in the desired orbit or
A propulsion system that is used to provide midcourse trajectorycorrections, braking maneuvers, and/or orbital adjustments.
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BILL OF WOPY fE:'d)A detail ed work schedule which lists all Operation & Maintenance
(0&M) task' s reouired to be performed at each work station for aspecific vehicle turnaround. It also contains applicable informa-tion such as se quence of performance, O&M instruction number, workauthorization number, time allocated, manpower, skill level, and
the start and completion data.
CARGOEverything contained in the Shuttle Payload Bay plus other equipmentlocated elsewhere in the Orbiter which is user unique and not carriedin the standard baseline Orbiter weight budget.
CERTIFICATIONFormal documentation that the individual has reached the prescribedskill or knowledge level as cited in a NASA/KSC specification, con-tract specification, or other appropriate documents.
COMMERCIAL PART OR ITEMA part or item which is manufactured primarily for the commercialrather than the Government market and having both commercial ,<ndGovernment applications. Commercial parts also include parts whichare manufactured in accordance with normal commercial quality con-trolled production runs which meet or exceed the requirements ofGovernment specifications or standards.
COMPONENT^embly or any combination of parts, subassemblies and assem-
blies and assemblies mounted together and normally capable of in-dependent operation in a variety of situations.
CONCURRENT DELIVERY
The delivery of support items concurrently with the end item beingprovisioned.
CONDITION MONITOREDThose items that have neither limited life nor on-condition main-tenance as their primary maintenance process. Condition monitoringis accomplished mainly by in-place instrumentation, sampling, andsubsequent trending analysis which provides data to predict an in-cipient failure.
CONSTRUC-ION AWARDThe effective date of direction From the KSC contracting officer tothe selected contractor authorizing commencement of work. Issue ofthe notice of award by the KSC procurement office completes thismilestone.
CONSTRUCTION COMPLETEApp rooriate facility construction is complete and the facility isavailable for equipment installation. Certification by the DE siteactivation office completes this milestone.
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CONTRACT AWARD`. The date of direction from the KSC contracting office to
the selected contractor authorizing coiimencement of work. Issue ofnotice of the award by the KSC procurement office completes thismilestone.
CONTRACTOR
^ The supplier of the end item and associated support items to theGovernment under the terms of a specific contract.
CUSTOMER o( ' r-"USER)An organization or individual requiring the services of the Space
Transportation System.
DEDICATED SPACELAB^n extension module devoted to a single discipline which may fly
more than :once a year for several years, and which may be assign-
ed to a payload development center.
DESIGN CHANGEA NASA approved engineering change incorporated into the end item
s which modifies, adds to, deletes, or supersedes parts in the end
item.
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DESIGN REVIEWSCritical Design Review (CDR). The completion of a meeting chaired
by the KSC Shuttle Projects Manager, or his designated representa-tive, to assure that the completed designs are in consonance with
Level II and project specifications,
Preliminary Desiqn Review ). The completion of a meeting chair-^(PDRed by the KSC Shuttle Frrojects Manager, or his designated represen-tative, at which preliminary designs are reviewed with prime con-
tractors to assure compliance with system and project requirements.
30% Des ,irn Review. A meeting chaired by the responsible DE project
i engineer, or his designated representative, at which preliminarydesigns are reviewed to assure satisfaction of system and project
requirements.
90% Desi gn Review. A meeting chaired by the responsible DE project
engineer,ever, et' is designated representative, at which final designsare reviewed to assure compliance with system and project sper:ifi-
cations.
DRAWINGS—(Tr-a-c data, including drawings as defined in MIL-STD-100A and pre-
pared in accordance with MIL-D-1000, Category D, aperture cards in
accordance with MIL-C-9877; graphs, or diagrams, industry standardst > and industry specifications, on which details are represented with
sufficient information to define completely, directly or by 'reference,
the end result in the selection, procurement, and manufacture of
i the item required.
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END ARTICLE END ITEMApphys cal - element of the Space Transportation System, It is afunctional physical entity related and selected for the purposeof system development, procurement, and logistics.
END ITEMfinal combination of end products, components parts, or materialswhich is ready for its intended use; e.g., Orbiter, receiver, am-plifier, recorder, ground support equipment, etc.
ESTIMATED ON DOCK (EOD) DATE yThe date the equipment is forecast to arrive on-dock at KSC.. Ini-tially, this date should coincide with the desired contract delivery ^l
date for purchased equipment. Subsequent to contract award, thedate will reflect the vendor's estimate of his ability to deliver.
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EXPERIMENTThe system of hardware, software, and procedures for performanceof a scientific or appiications investigation undertaken to: rti
• Discover unknown phenomena• Establish the bads of known laws• Evaluate applications processes and/or equipment
FACILITY NEED DATE )That date when the appropriai:e facility is required to receive pro-gram hardware (Orbiter, SRB, ET) for test and checkout. Firstoperational use of the facility completes this milestone.
FAILURE MODES AND EFFECTS CRITICALITY ANALYSIS (FMECA)An analysis to determine a LRU SRU method and frequency of failureand the resulting effects.
FEDERAL ITEM IDENTIFICATIONcomplete description rn accordance with FED-STD-SD.
FEDERAL SUPPLY CODE FOR MANUFACTURERS (FSCM)Provides a nonsignificant code assigned to identify manufacturers..Normally used with the Manufacturer's Part Number (see Federal 1
Cataloging Handbooks H4-1 and H4-2 for codes).
FIRST MANNED ORBITAL FLIGHT (FMOF)Liftoff of the first manned Space Shuttle from the launch pad at KSCon the first manned orbital flight. Vehicle flight beyond "towerclear" completes this milestone. Subsequent flights use similardefinitions.
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FLIGHT'hat portion of a mission encompassing the period from Launch to
Larding, or Launch to Termination, of the active life ofa space-craft, The term Shuttle "Flight" means a single Shuttle round tripf i ts launch, orbital activity, and return). One fli g ht might de-
liver more than one payload, More than one flight mi g ht be re-
quired to accomplish oiie mission.
FLIGHT READINESS 'FIRING (FRF)First Shuttle vehicle is stacked on the launch pad, and a Count-down Demonstration Test (CDDT) performed (designed to duplicate tothe fullest possible extent an actual launch countdown). Propel-lant loading occurs in normal launch sequence, culminating a 20-second flight readiness firing. Engine shutdown after 20 secondsof sustained firing completes this milestone.
FREE FLYERAny payload that is detached from the Orbiter during the operational
} phase of that payload, and is capable of independent operations.
GROUND SUPPORT EQUIPMENT (GSE)Non-flightt equipment; implements and the devices re q uired for thehandling , servicing, inspection, testing, maintenance, alignment,adjustment, check, repair and overhaul of an operational end itemor a sub-system or component thereof. This may include equipmentreouired to support another item of ground support equipment asdefined herein.
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HARDWARE DEVELOPMENT COMPLETE ^ !The date all hardware manufacture/procurement has been completed,and hardware is ready to be delivered under terms of the contract. {Notification from the contractor to the responsible KSC officecompletes this milestone.
INDENTUREA method of showing relationships to indicate dependence and anorder of dependence. Indenturing provides a top down breakdown of s
- an item into its assemblies, subassemblies, components, and parts.
INITIAL DELIVERY 1'The date of delivery for the first item of equipment to be deliveredunder terms of the contract. Acceptance of the equipment by the DES
`.` site activation office completes this milestone..
INITIAL OPERATIONAL CAPABILITY (IOC)Point in time at which the first operational confi g ured Space Shuttlevehicle is prepared for flight. Successful completion of DDT&E and
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INITIAL OUTFITTING/LAY-TN
The positioning of support items at user levels and at interme- idiate supply and maintenance levels as initial issues in antici-pated support of newly deployed end items.
INSTALLATION COMPLETE
1' t a•te w en t e DE site activation office declares the completesystem has been installed at the facility. Certification by theDE site activation office completes this milestone.
IN-STORAGE MAINTENANCEThe actions performed on a stored item to retain it in a specifiedcondition by providing systematic inspection, detection and pre-vention of deterioration.
INTEGRATED LOGISTICSTfiose interrelated processes which identify and provide the serviceand resources (hardware and data) required to achieve an economicaland timely support of operations. The principal processes are:logistics engineering analyses, maintainability, maintenance, opera- ,•^tional maintenance documentation, supply, transportation/packaging,training, and logistics management information.
INTEGRATIONc^ ombination of activities and processes to assemble components, i
subsystems, and system elements into desired configuration, and toverify compatibility between the constituents of the assembly. 1
INTEGRATION LEVELS
Level I- Cargo/Shuttle Integration; Integration into the Orbiter ofeverything that goes on a single Shuttle flight.
Level II- Element into Cargo Integration; Assembly of Spacecraftelements and/or free flyers (with or without Tug) into acargo for a single Shuttle flight.
r Level III— Instrument to Supporting System Integration; IntegrationOf one or more instrument as «nblies with Spacelab ele-ments (extension module and/or pallet) or the free flyerpayload.
Level IV- Instrument Assembly Integration; Assembly of individualinstruments and their unique su'5porting subsystem into acompatible package of equipment to accomplish specific 1mission_ objectives on a given flight.
1(INTERFACE
a mechanical, electrical, and operational common boundary betweentwo constituents of a system.
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INTERIM RELEASE
ut oriia ion given a contractor to release support items to pro-
duction or procurement simulataneously with his. production require-ments for like items prior to suimissicn of a Spare Parts Order.
INTERIM UPPER STAGE (IUS)n upper stage caps a of being launched in the cargo bay of the
Orbiter, and intended for use prior to the availability of theSpace Tug. As presently planned, it will be a modification ofan existing stage, may or may not be retrievable for reuse, andwill be capable of the delivery but not the retrieval of payloads.
INVITATION FOR BIDS^IFBThat point in time when the complete assembly of documents relatedto a particular contract award will be provided to the prospectivebidders by a formal advertisement for the purpose of competitivebidding. Issue of the invitation by the KSC procurement officecompletes this milestone.
ITEMAny level of hardware assembly (system, element, subsystem, equip-ment, component, or part).
K-FACTORSseries of terms used to derate Meantime Between Failure (MTBF) to
a Meantime Between Demand (MTBD) on the supply system, Fourexamples are:
Kl Engineering correction based on LRU complexity,greater than 1
K2 Total failure ratio to relevant failure, greater than 1
`sK3 Ratio of operating hours to flying hours
K4 Ratio of demands on supply system to failures
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tLAUNCH PAD
The pad area from which the Space Shuttle will be launched. Thei.stacked Space Shuttle will undergo final prelaunch checkout andcountdown at the launch pad.
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LAUNCH PROCESSING SYSTEM (L?S)
A high speed digital computer operated checkout system used tosupport test, checkout, launch control, and operational manage-ment of launch site ground o perations at KSC.
LAUNCH PROCESSING SYSTEM (LPS) SUPPORT AVAILABLE—Pint in time when LP5 tor a given facility is ready for use by
KSC test personnel. Certification by the DE site activationoffice completes this milestone.
LEVEL OF REPAIR ANALYSIS (CORK)A process for recommending repair levels of LRUs, SRUs, assem-blies, and sub-assemblies which will accrue minimum total sup-port costs within o p erational and technical constraints overthe system design life. It forms the basis for assigning repairlevel; repair versus discard-at-failure decision; repair partsprovisioning; Source, Maintenance, and Recoverability (SMR)coding; maintenance planning, and documentation.
LINE REPLACEABLE UNIT (LRU)—item whose rep acement constitutes tks optimum organizational
maintenance repair action for a higher indenture item (i.e., anyassembly which can be removed and replaced as a unit from thesystem at the operating location).
LOGISTICS ENGINEERING ANALYSES (LEA)composite of analysis techniques which are used to identify the
necessary logistics resources to support operation and maintenancefunctions in a timely and economical manner. This includestraining, level of repair, spares determination analyses, etc.
LONG LEADTIME ITEMSThose items which because of. their complexity of design, com-plicated manufacturing processes, or limited production, maycause production or procurement cycles which would precludetimely or adequate delivery, if not ordered in advance of normalprovisioning.
MAINTAINABILITY (H)
A characteristic of an item created during design and/or opera-tion which enables the item to be retained in a specified condi-tion acceptable rate, using prescribed procedures.
MAINTENANCEThe actions taken to retain an item in a specified condition byproviding systematic inspectind, detecting, and servicing forthe prevention of incipient failure and the action taken torestore an item to a specifies operational condition. This in-cludes fault isolation, item replacement, repair and verify service-able.
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MAINTENANCE CONCEPTA escription of the planned method for accomplishing maintenance.A thought process which relates the maintenance tasks to be per-formed to the maintenance levels to support the operation of thesystem/equipment in the plane—iii o perational environment.
MAINTENANCE ENGINEERING WLYSIS MEAAn analysis of contract ;en item RU/SRU or equivalent items whichdefines the repair tasks necessary to restore a system to opera-tional condition utilizing the . maintenance philosophy, maintain-ability characteristics and other factors,
MAINTENANCE GROUND EQUIPMENT_ MGE)—T e equipem nt whic is used to support the maintenance operations
for vehicle, pevl^u'd, stages, facilities, or other MGE.
MAINTENANCE LEVELSAll maintenance functions performed either directly on the vehicleor in a supporting role categorized in one of the following threecategories:
a. Organizationalizational Level - maintenance performed on vehicle sub-systems and related support equipment in direct suppert of theturnaround flow. It includes scheduled and unscheduled main-tenance actions required to inspect, service, calibrate, re-place, repair and modify in-place, and reverify (sub)systemsand associated components,
b. Intermediate Level - Maintenance that is performed in directsupport of organizational level maintenance and involvesdisposition, repair, service, modification, calibration, andverification of items removed during organizational maintenance.
If c. Repot Level - K,,;ntenance that is performed by designatedmaintenance sources; e.g., manufacturers, USAF Air LogisticsCenters, NASA Centers, etc. It normally consists of mainten-ance that requires MGE, facilities, or skills which are noteconomically available at the intermediate level; e.g., re-pairing, modifying, overhauling, reclaiming, or rebuildingparts, assemblies, subassemblies, components, and and items,manufacturing of unavailable parts; and providing technicalassistance to the organizational and intermediate maintenance'levels.
MAINTENANCE TRAININGDetailed work-oriented instructions on servicing, maintenance, over-haul, and repair of product end items,_ including support and faci-lities equipment.
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MANAGEMENT CODING
Th—eassignment of codes consisting of letters and/or numerals
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MATERIAL SERVICE CENTERS (MSC)An actiVit^y --es-t-a-bTi-sfFeY--adjacent to a facility or work area con-centsupplyservices l ons and functionalacti vi ti es"" ". the immedia te " ,=" p/ ~n. " . require such service.Each MSC will provide a singlepoint of contact with the XSCsupply system, and wi ll , stock, and issue mater al andsupplies required by the area(s) served.
MISSIONThe perfnmmnue of a coherent set of investigations or opera-tions in space to achieve program goals.
Examples,Measure detailed structure uf Sun's chromosphere,Survey mineral resources of North America.
^ The elements of the Space Shuttle will be stacked upon the mobilelaunch p l a tform-- whil e '~ the Vehi cle
^ '-'--`---`g `''-''
- _ stacking, it will be rolled- out ^o ^^w launch pad,
' MODIFICATION COMPLETE
That date wFe—nexisting facilities at XSC have been modified.Certification by the DE site activation office completes this
^ milestone.
MULTIPLE PAYLOADS
^More than one separate payload carried in the cargo bay.
MULTIPURPOSE SPACELAB--^A6^ extension mo6ule involving u variety of disciplines usu-
all: for specific flights, and which may require the services ofu payload integrator or agent.
NATIONAL STOCK NUMBER (NSYJA disorcte 1dpntifying number assigned to each item of supply with-in the Federal Catalog System. A data chain consisting of thefour digit Federal Supply Classification, two digit Country Code
d seven digit Federal Item Identification Nmnhc, in that order.May have a two character oonl Cognizance Code and one characterMaterial Control Code prefix, and u two character Special MaterialIdentification Code suffix.
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OFF-LINE
An activity conducted (by a payload owner) independent of anySTS element (i.e., Tug, Spacelab, or Shuttle). This normallymeans the activity is conducted in a separate facility as well.
OFF-LINE MAINTENANCE..hat maintenance function performed at the 'intermediate and depotmaintenance levels.
ON-CONDITION RAINTENANCEThose items, which will remain in place until an assessment ofthe item's condition indicates that removal is required, areclassified as on-condition items, The assessments are made atintervals determined by the item's failure characteristics, andmany consist of inspections, measurements, test, or any othermeans not requiring disassembly or removal of the item.
ON-LINE MAINTENANCE
- That maintenance function performed at the organizational level. .?:SA
ON-LINE (STS)An activity conducted with payload and orie or more STS elements.This is broken down as follows: ;i
On-Line Shuttle; An activity encompassing a payload, itscarrier, and the Shuttle Vehicle.
On-Line Spacelab; An activity encompassing a payload andits Spacelab.
On-Line Tug/IUS; An activity involving a payload and theTug/IUS.
i ON-THE-JOB TRAINING (OJT)
A planned program which augments classroom training through self-study and supervised instruction to provide expanded knowledge andjob proficiency while the trainee is actually working in a duty
tassignment.i
OPERATIONS AND MAINTENANCE DOCUMENTATION (OMD) <
OMD incomes: engineering drawings and lists, Organizational Op-erations and Maintenance (OM) manuals including OMIs; Standard Re-pair manuals, Illustrated Parts Breakdowns (IPBs), IntermediateMaintenance manuals, Depot Maintenance manuals, Non-destructiveInspection manuals, Work Unit Code (WUC) manuals, Time ComplianceTechnical Instructions (TCTIs).i
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- OPERATIONS AND MAINTENANCE MANUALS (OM)'informationOM manuals are organized proce ura specifying
methods of operating and maintaining flight hardware and supportequipment. OM manuals will be used in the performance of day-to-day operations and maintenance tasks.
- OPERATIONAL CHECKOUTThat perio o time when the Operations and Maintenance (OW)
i organization performs crew training, simulations, and proceduralfamiliarization prior to first use on flight hardware. Certifi-
cation of ground test and checkout crew readiness to support theassigned mission prior to receipt of flight hardware completes
this period.
OPERATIONAL READINESS 'DATE ORRDD)That date when a facility, including all systems and equipment, isoperationally ready and is turned over to the user/operator for
II operational training and systems familiarization prior to first1 use in support of flight hardware checkout. Certification by
sthe DE site activation office completes this milestone. v< ..fm'`µ
j OPERATOR NEED DATEThe ate e C operator (O&M organization) requires the equip-fnent/GSE to be made available to them, to accomplish any remain-
- ing work required prior to first use.
OPTIMUM REPAIR LEVELThe maintenance level selected to perform specific tasks and func-tions for a given equipment item. The decision to repair equip-ment at the indicated maintenance level requires that all author-ized maintenance capability (remove, replace, assembly, or test)to provided to that level. This does not prevent some repairfrom being done at a different level of maintenance for a differ-ent task.
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OPTIMUM REPAIR LEVEL ANALYSIS (ORLA)See "Level of Repair Analysis".
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-0RBITER PROCESS ING FACILITY tOPF)Thin is a bui ding at KSC with two bays in which the Orbiter under-goes post flight inspection, maintenance, and pr-emate checkout.;,prior to payload installation. t`
ORGANIC SUPPORT
In-house NASA/DOD assumption of intermediate or depot supply andmaintenance ac vis -a-vis contractor/vendor support.
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OUTFI17ING AWARDTiTie effective date of direction from the KSC contracting officer
to the selected contractor authorizing commencement of work.Issue of notice of the award by the KSC procurement officecompletes this milestone.
OUTFITTING COMPLETEat ate when all systems/equipment has been emplaced. Certifi-
cation by DE site activation office completes this milestone.
PALLET__Tn external unpressurized platform for mounting telescopes, an-
tennas, and other instruments and equipment requiring directspace exposure for conducting science and applications activities
z, on Space Shuttle Spacelab missions. The pallet may be composedof segments.
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PARTOne piece, or two or more pieces, joined together which are not
normally subject to disassembly without destruction or impair-ment of designed use.
PAYLOAD CHANGEOUT ROOM
An environmentally controlled room on a movable support structurewhich includes a manipulator system for transferring a payloadvertically between a transport canister and the Orbiter payloadbay.
PECULIAR PARTAny part which must be produced to order in accordance with aparticular drawing and/or specification. Any part requiringflight certification shall be classified peculiar. Also, normal-ly standard parts that must be selectively accepted (to criteriadifferent from the usual standard part requirements) shall beconsidered peculiar.
PHASED PROVISIONING
A refinement to the provisioning process whereby procurement ofP ^p w YP nselected items is phased by time interval into the later stages
d,of production, thereby enhancing the ability of the provisioning
"• activity to select the most favorable mix of requirements.
PRELIMINARY ENGINEERING REPORT (PER) - FINAL RELEASEThat date when preliminary engineering is complete and the finaldocumentation has been released. Distribution of the finaldocumentation completes this milestone.
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" PRICED SPAREARTS LIST
priced list of items and quantities of spare parts selected rfor procurement under the.contract.
PROCURE/FABRICATE COMPLETET aFi—t date when all procurement and fabrication for a particularfacility has been finished. Certified acceptance by the DE site
activation office completes this milestone.
PROCUREMENT METHOD CODE (PMC)The contractor W't11 use alpha-suffix codes (6, 7 or 8) containedin MIL-STD-7898 to communicate his reason for assignment of aContractor Recommended Code (CRC). Procurement Method Codes
(1 through 5) will always be assigned by government representa-
tives (KSC Provisioning Team) from the CRC codes furnished bythe contractor.
PROGRAMAn activity involving manpower, material, funding, and schedulingwhich are necessary to achieve desired goals (i.e., Shuttle Pro-
gram, Solar Astronomy Program, etc.,).
PROGRAMMING CHECK LIST (PCL)Is used to provide data governing initial provisioning for enditems of Shuttle hardware and related support equipment.
PROVISIONING ACTIVITY 9
The KSC Provisioning Team, Shuttle Project Office, which is res-
ponsible for the selection of, and the determination of require-ments for, provisioned items.
PROVISIONING PERFORMANCE SCHEDULE (PPS)Check List of entries including schedules in the provisioningprocess that is used to monitor such events.
PROVISIONING SCREENINGrovisioning Greening, when required by the Provisioning Require-
ments Statement; will be accomplished in accordance h DOD i
4100.38M. Provisioning and other Preprocurement Screening Manual. s f
PROVISIONING SPECIFICATIONIs the contractural instrument to provide clear and concise instruc-tiorrs which will achieve the objective of providing adequate,timely and economical support, by need dates for systems and end
items entering the inventory. It provides NASA with the flexibil-
ity in selecting minimum essential data for each specific pro-' curement and provides the contractor the detailed guidance to
fulfill provisioning requirements. The finalized Provisioning
Requirements Statement_ and the Provisioning Specification shallbe appended to the end item contract.
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PROVISIONING TECHNICAL DOCUMENTATION (PTD)Is the generic term used to reference the various types of Pro-visioning Lists, decks of Punch Cards, Mechanized (PCM) or Auto-matic Data Processing (ADP) tapes. PTD shall be furnished bycontractors to KSC Provisioning Activities for the identification,selection, and determination of initial requirements and catalog-ing of support items to be procured through the provisioning pro-cess. Supplementary Provisioning Technical Documentation (SPTD)is also considered to be a part of PTD.
QUALITATIVE REQUIREMENTSQualitative requirements further amplify the maintenance conceptto the designer conveying special features which the operator/user wants designed into the hardware. Specialized qualitativerequirements to be considered for specification insertion are:
Failure Detection rPerformance Degradation Detection s ,,^'"Built-In Test Equipment (BITE)Adjustments
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GSE-Integrated/Automated/ManualSelf-TestSkill LevelsSpecial ToolsAccessibilityInterchangeability
UANTITATIVE REQUIREMENTSQuantitative requirements provide a firm goal (appointment oftime available for maintenance) for the designer to meet his de-sign and also provide a requirement whose goal can later be de-monstrated during the verification period.
This type of quantitative requirement specified in a Maintainabili-ty activity must be responsive to the operational use of the equip-ment. Times may be specified in manhours, clockhours, or both.Maintenance times may also be broken out and levied for the variouselements that comprise the total repair functions such as faultisolate, remove/replace or checkout. The requirement will also be .:specified for all applicable levels of maintenance; these are or-ganizational, intermediate and depot. A listing of the commontypes of requirements to be considered are:
Maintenance Hours/LaunchMaintenance Hours/Operating HourMean Time To RepairMaximum Repair TimeScheduled Replacement IntervalsInspection Frequency and Maintenance HoursServicing Frequency and Maintenanf.;e Hours
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READY TO SUPPORTThat date when equipment/facilities are required to support project/facility milestone. First operational completes this milestone,
REORDER POINTThe inventory level, representing procurement lead time and safetylevel quantitative requirements as on-hand and on-order balances,at which spares item replenishment is to be initiated.
REPAIR PARTSThose support items that are coded to be not repairable (i.e.,Consumable Items).
REPAIRABLE ITEM
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An item in unserviceable condition that can be economically repair-ed and returned to a serviceable condition.
Note: Repairable status is determined after failure occurs.
REPARABLE ITEMAn item, which because of economic and design characteristics, isdetermined to be subject to repair for return to use when it be-comes unserviceable.
Note: This term reflects the logistics status rather than thea
physical status of the item. Reparable categorization ismade before failure occurs.
REQUEST FOR PROPOSAL (RFP)That int in time whcA the necessary documentation is issued to re-
q proposa ls P P Pnegot iationo Issuefofmtheurequestebb^therKSCrprocurementofficecontract q y p coma
pletes this milestone.
SAFETY TRAININGInstructions which alert a •trainee to those conditions or operationswhich could be substantially dangerous to the operator or other haz-ard that would damage equipment or property.
SCHEDULED DELIVERYWhen NASA provides a required delivery schedule with each SPO, thecontractor shall accept the order and within 30 days notify NASA ofhis acceptance of the schedule or provide a proposed line item de-livery schedule for negotiation. The approvedschedule will be in-
t corporated into the contract by supplemental agreement.
SCHEDULED MAINTENANCEAny repetitive maintenance action deemed necessary to insure the func-tional success of equipment including periodic servicing and replace-ment of time/cycle components.
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SHARED EQUIPMENT NEED DATE MND)The date equipment/GSE to be used at more than one location is re-quired to support site activation activities at the secondary lo-cations ( s). The need date at the first user's location will bethe (SAND) for that location.
SHOP REPLACEABLE UNIT (SRU)ny item whose replacement constitutes the optimum, intermediate, 1
or depot level of repair action, i.e., a module for an LRU whichcan be removed at an intermediate or depot repair facility,
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SITE ACTIVATION NEED DATE (SAND)The aate equipment G5E is required on-dock at KSC to support instal-lation and validation. Uncrating, inspection, and handling timemust be allowed in establishing the SAND.
SOURCE, MAINTENANCE AND RECOVERABILITY (SMR) CODEAn SMR code shall be recommended by the end item contractor or de-sign agency for each component/part. The code will be used to com-municate maintenance and supply instructions to the various support/maintenance activities.
SPACELAB—`A(a6oratory designed for space operations and composed of modules
or pallets suitable for accommodating instrumentation for conduc-ting research and application activities on Shuttle sortie flights.On a given flight, the Spacelab configuration can be comprised ofa module only, a pallet only, or a combination of a module and apallet.
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SPACE TRANSPORTATION SYSTEM (STS)An integrated system consisting of:
Space Shuttle (Orbiter, External Tank, Solid Rocket Boosters)Upper Stage for boost to extended orbit (IUS, SSUS, TUG)
Spacelab [
Any associated flight hardware and software a
SPACE TUG4 YAn upper stage installed for launch, or recovery and landing, in thecargo bay of the Orbiter. Developed specifically with the capabilityfor delivery, retrieval, and servicing of payloads in orbits and
" trajectories beyond the capability of the Shuttle alone. It is in-tended to be retrievable for refurbishing and multiple reuse.
SPARE PARTS ORDER {_A spare parts provisioning list which has been approved by the NASAContracting Office and released to the contractor for fabrication or procurement.
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SPARES-^TFoosse support items that are coded to be repairable ReparableRP P (i.e.( p
)
' SPECIAL TOOLS TEST EQUIPMENT & SUPPORT EQUIPMENT aThose support items that have singe pecu iar application to aspecific end item. ;l
STANDARD PARTr.
Any parlor item which is adequately defined by a recognized. Govern-ment-wide or industry -associated standard drawing and /or specifica-tion, and is normally available from commercial, DSA, and/orGSA sources. (Examples of standard parts and items are nuts, bolts,washers, screws, pins, keys, grommets, rivets, o-rings, clips,,fasteners, clamps, fittings, standard electrical and electroniccomponents, etc.)
STATEMENT OF PRIOR SUBMISSION (SPS)ProvisioningA certification by an offeror/contractor that Technical
Documentation previously furnished to the government may satisfythe immediate Provisioning Technical Documentation requirements,with or without changes, to update the PTO to the end item configura-tion to he or being procured.
STS ASSOCIATED PAYLOAD
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A specific complement of instruments, space equipment, and supporthardware carried to space to accomplish a mission (or discreteactivity) in space.
SUBASSEMBLY^Tormore parts which form a portion of an assembly or•a component
' replaceable as a whole, but having a part or parts which are in-dividually replaceable. (Examples: telephone dial, mounting boardwith mounted parts.)
SUPPLEMENTARY PROVISIONING TECHNICAL DOCUMENTATION (SPTD)Supplemental ro-visioning Tec nice Documentation is technical data -u d parts/equipment d consists of data s uc h asused to describe parts/equipme an t
specifications, standards, drawings, photographs, sketches anddescriptions, and the necessary assembly and general arrangementdrawings, schematic drawing, schematic diagrams, wiring and cablediagrams, etc. needed to indicate the location and function ofthe item. As a minimum, SPTD must be capable of providing for the(1) technical identification of items for maintenance support con-siderations, (2) preparation of item identifications for the pur-
pose of assigning National Stock Numbers, (3) review for itementry control, (4) standardization,` 5 review for potential inter-
changeability and substitutability, (6) item management coding,
(7) preparation of stock/issue lists, and (8) initial procurementfrom the contractor or original manufacturer.
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SUPPORT EQUIPMENTThose support items that are not an integral part of an end itembut are required in the operation of the and item.
SUPPORT EQUIPMENT INSTALLATION 3 CHECKOUT COMPLETEat date when i ndividualsupport equipment —items have been com-
pletely installed and validated at the facility. Certificationby the DE site activation office completes this milestone.
SUPPORT ITEMSItems subordinate to, or associated with, an end item (i.e., spares,repair parts, tools, test equipment, support equipment, and sundrymaterials) and required to operate, service, repair or overhaul an
d •ten i em.
SUPPORT REQUIREMENTS ANALYSIS (SRA)<9
An analysis accomplished during the system design to establish} logistics support requirements. The analysis is a step-by-step
process of predicting operational and maintenance activities anddefining and documenting the required resources.
TRADE STUDIES---T"-dtu iesconducted to compare alternative parameters, materials, or
procedures.
TRAINING REQUIREMENTS ANALYSIS (TRA)An analysis accomplished to determine the skill levels type andquantities necessary to support a maintenance philosophy, throughmaintenance engineering analysis or support requirements analysis.
UNSCHEDULED MAINTENANCEAny maintenance activity required as a result of the random failuresof equipment. It includes the restoration to a serviceable condi-tion of a failed subsystem, end item, replacement package or unit,component, or part. r
VALIDATION
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Verification that the equipment / system meets the operational needsof the OM user and is part of t°ie turnover process from the design,agency to the OM agency.
VENDOR ITEM
An item which is used in or attached to the end time produced bythe contractor under this contract; and which is procured by the
contractor on the open market or from established sources and forwhich the contractor is not the design activity.
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WORK STATION^facilfty or functional area where either organizational level l
operations and maintenance tasks are performed in direct supportof a turnaround cycle or intermediate and depot level maintenancetasks on Shuttle components or related GSE are performed.
WORK UNIT CODE (WUC)
A six alphanumeric character indentured equipment identificationcode which uniquely identifies the entire system from top down tocomponent level. It functionally identifies the system, subsystem,assembly, component and significant reparable part on which main-tenance is to be performed:
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SECTION II
WREVIATIONS & ACRONYMS
-A-
A AmpereAlphaAcceleration
A&A Advertise & AwardA/A Air-to-AirA/C Associate Contractor
AircraftA/D Analog-to-DigitalA/G Air-to-GroundA/N Alpha-NumericA/P AirportAA Accelerated Assemblies
Airplane AvionicsAA/AL Airplane Avionics/Autoland
Automatic Approach/Autoland 4, ;•°} AAE Abort Advisory Equipment
Aerospace Auxiliary EquipmentAAFE Advanced Applications flight EquipmentAAIR Advanced Atmospheric Sounder & Imaging RadiometerAAS Abort Advisory SystemAB AirborneABE Airbreathing EngineABES Airbreathing Engine SystemABM Advanced Bill of MaterialsABPS Airbreathing Propulsion Subsystem
' AC Alternating CurrentACC Automatic Control ConsoleACD Accuracy Control Document r
ACE Automatic Checkout EquipmentACCEL Accelerometer
Acceleration! ACCO Audio Central Control Unit
ACES Acceptance Checkout & Evaluation SystemAcceptance Control Equipment Section
ACIL Automatic Controlled Instrument LandingACL Allowable Container LoadACN Ascension Island fi `ACO Acceptance_ Checkout r
Administrative Contracting OfficerACP Audio Control Panel
Astronaut Control PanelACPM Associate Contractor Program Manager
k;ACPO Associate Contractor Projects OfficeACPS Aptitude Control Propulsion Subsystem
' ACRS Advisory Committee on Reactor SafeguardsACS Attitude Control System
Automated Control System
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ACT Acquisition, Control of Test (Units)
ACTA Activate Test ArticleADAP Adaptive Intercommunication Requirement
ADB Aerodynamic Data BookADC Air Data Computer
Analog-to-Digital Computer
ADF Automatic Display FinderAutomatic Direction Finder
ADI Attitude Direction Indicator
ADL Avionics Development Lab (Downey, CA)ADP Acceptance Data Package
Automatic Data Processing
ADPA Air Data Probe AssembliesADPE Automatic Data Processing EquipmentADS Air Data SystemADTA Air Data Transducer AssemblyA6'c Architectural & EngineeringAEC Atomic Energy CommissionAEDC Arnold Engineering Development CenterAF Airframe
Audio FrequencyAft Fuselage
AFAD Armed Forces Acquisition Document
AFB Air Force BaseAFC Automatic Frequency Control
AFCS Automatic Flight Control System
AFD Aft Flight DeckAFEB Award Fee Evaluation BoardAFEC Award Fee Evaluation Committee
AFETR Air Force Eastern Test RangeAFF Acceptance & Ferry FlightAFFTC Air Force Flight Test Center (Edwards AFB)
AN Automatic Fault IsolationA'FLC Air Force Logistics Command
AFM Air Force ManualAFPD Authorization for Program Development
AFO Announced Flight OpportunityAFR Air Force Regulation
AFS Air Force StandardAFSC Air Force Systems CommandAFSCF Air Force Satellite Control Facility
AFSWC Air Force Special Weapons Center (Holloman AFB)AFT Atmospheric Flight Test
Aerodynamic Flight TestAC Artificial GravityAGC Automatic Gain ControlAGE Aerospace Ground Equipment
AGL Above Ground Level
AGO Santiago, Chile (STDN)AGOES Advanced Geosynchronous Observation Environment
Satellite
AID Abbreviated Item Description
AIDS Airborne Integrated Data Subsystem
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AIL Avionics Integration LaboratoriesAILS Automatic Instrument Landing SystemAIM Automated Information ManagementAIR Adaptive Intercommunication RequirementAIRME Apollo Initiator Resistance Measuring EquipmentAIST Agency of Industrial Science and TechnologyAJ Assembly JigA&L Approach and Landing
AL AirlockALAS Approach Landing Autopilot SubsystemALC Automatic Light ControlALDO Activity Level Dependent OperationsALE Airport Lighting EquipmentALERT Acute Launch Emerg ency Reliability TipALIO Activity Level Independent OperationsALS Alternate Landing Site
Advance Logistics, SystemALSA Astronaut Life Support Equipment
ALSS Airlock Support SubsystemALT Approach & Landing Test
Altitude
AM Actuator MechanismAmmeterAwolitude Modulation
AMA Airy Material AreaAMC Automatic Mixture ControlAMDS Advanced Missions Docking SubsystemAMEC Aft Master Events Controller
AMF Abort Motor FacilityAMI Alpha Mach IndicatorAMLC Asynchronous Multiline ControllerAMOOS Advanced Manes+jering Orbit-To-Orbit ShuttleAMPR Aeronautical Manufacturer's Planning Report
Aeronautical Manufacturer's Progress ReportAMPS Atmospheric Magnetospheric & Plasmas in SpaceAMS Acoustic Measurement System
Amplifier SubsystemAMST Advanced Medium STOL Transport
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WAS Automatic Modal Tuning & Analysis System jAMTD Automatic Magnetic Tape DisseminationAMTF Acoustic Model Test FacilityAN Alpha Numeric
Army/NavyANA Air Force-Navy Aeronautical BulletinANAL Analysis '1
AND Air Force-Navy Aeronautical Design StandardANL AnalogANSI_ American National Standards Institute
ANT Antigua (ETR)}
ADA Abort-Once AroundAngle of Attack
AOCRD Acceptance & Operational Checkout RequirementsDocument
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AOPMADSAOTAPAAPCAPICAPIRD
AP I RL
APKAPLACAPPFAPPLEAPR
APS
APSSAPUAQLA&RCARARAPARCARCSARFDSARINCARPESHARPFARS
ASA
ASACASAP
ASASASCASCIIASCP
ASCSASDTICASE
ASGAS I
ASKASKAASLUASME
Airline Operations Planning ModelAcquisition of SignalAvionics Overall TestAbort Programmer AssemblyAdvanced Propulsion Comparison StudyAutomated Process Information FileAuthorized Procurement Information Requirements
DescriptionAuthorized Procurement Information Requirements
ListAstronaut Preference TestAnalysis Program For Linear Active CircuitsAutomated Payload Processing FacilityAdvanced Prcpulsion Payload EffectsAdvanced Parts ReleaseAft Propulsion System (Subsystem)Airbreathing Propulsion SystemAtmospheric Pressure Supply SubsystemAuxiliary Power UnitAcceptance Quality LevelApplication and Resource ControlAcceptance ReviewAstronaut Rescue Air PackAmes Research Center (Moffett Field, CA)Aft Reaction Control SubsystemAutomatic Reentry Flight Dynamics SimulatorAircraft Radio, IncorporatedAccurate & Reliable Prototype Earth Sensor HeadArmy Pulse Radiation FacilityAtmospheric Revitalization SystemAttitude Reference SystemAir Rescue ScienceAerosurface Servo AmplifierAmerican Standards AssociationAerodynamic Surface Assembly & CheckoutAs Soon As PossibleAerodynamic Stability Augmentation SubsystemAero Surface ControlAmerican Standard Code fog' Information InterchangeAttitude Set Control PanelAttitude Stabilization & Control SystemAnalog Signal to Discrete Time Interval ConverterAdvanced Space EngineAutomatic Support EquipmentAvionics Subsystem GroupAirspeed IndicatorAugmented System IgnitionAmended Shipping InstructionsAugmented Spark IgniterAmplitude-Shift-;KeyingAutomatic Systems for Kinematic AnalysisAntenna Select Logic UnitAmerican Society of Mechanical Engineers
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ASP Airborne Science ProgramASQC American Society for Quality Control rASR Air/Sea RescueASRM Abort Solid Rocket MotorASS Airlock Support SubsystemASSESS Airborne Science Shuttle Experiments System SimulationASSY AssemblyAST AstronomyASTF Aeropropulsion System Test Facility
µ ASTIA Armed Services Technical Information AgencyASTM American Society for Testing MaterialsATA Avionics Test Article
Air Transport AssociationAbort Time Assembly
ATC Air Traffic ControlATCS Active Thermal Control SubsystemATDB Aerothermodynamic Data BookATE Automatic Test EquipmentATF Auditorium & Training facility iATIS Automatic Terminal Information SystemATL Advanced Technology Laboratory 4`"' ^%,ATLAS Abbreviated Test language for Avionics SystemsATO Abort to OrbitATOLL Acceptance, Test, Or Launch LanguageATP Authority To Proceed
Acceptance Test ProcedureATR Air Transport Rack
Air Transport RadioAir Transport Rating•
!. ATS Acceptance Test SpecificationAutomatic Terminal SystemApplications Technology SatelliteAdministrative Terminal System
ATT Acceptance Thermal TestingATU Audio Terminal UnitAUTODIN Automatic Digital NetworkAUTOLAND Automatic LandingAUX Auxiliary
AV AvionicsAero Environment, Inc.
AVE Atmospheric Variability ExperimentAVVI Altimeter Vertical Velocity Indicator
f=AVT Acceptance Vibration TestingAWCS Agency-Wide Coding StructureAWG American Wire GageAWL Automated Wire ListAWS American Welding SocietyAZ Azimuth
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B BitB/C Bench CheckB/L BaselineB/W Black and WhiteBA Bank AngleBAC Buffer Access Card
_ Booster Assembly ContractorB.AI Barometric Altitude IndicatorBARS Baseline Accounting and Reporting System
BB BreadboardBBC Before Business ClearanceBC Battery ChargerBCCT Break Control Command TransducersBCE Bus Control ElementBCP Benchmark Control PointBCRD Basic Consolidated Requirements DocumentBCU Bus Control UnitBOA Bermuda (STDN)BECO Booster Engine CutoffBER Bit Error RateBESS Biomedical Experiment Scientific SatelliteBFCS Backup Flight Control SystemBITE Built-In Test EquipmentBIU Buffer Interface Unit e
BLOW Booster Lift-Off WeightBMAP Buffer MapBME Bench Maintenance EquipmentBMS Background Measurement SatelliteBOD Beneficial Occupancy DateBOE Break of Entry`BOF Beginning of FileBOI Break of InspectionBOM Bill of Material
Beginning of MonthBOP CEA Boeing P l astic Analysis Capability for Enginesi g a A Y Y 9PBOT Beginning of TapeB&P Budgetary and PlanningBP BoilerplateBPD Baseline Program DocumentBPI Bits Per InchBPS Bits Per SecondBRAVO Business Risk and Value of Operation in Space [`^
BRRS Banana River Repeater StationB/SC Break Skid ControlBSI Basic Shipping Instructions
BSM Booster Separation MotorsBSRM Booster Solid Rocket MotorBTC Bus Tie ContractorBtu British Thermal UnitBU Backup
- BUOU Backup Optical UnitBUR Backup Rate
BW Bridgewire
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-C— r
C CandleCapacitanceCentigradeCycleHundredComplete j
C-C Carbon-CargonC-To-C Computer-To-ComputerC/D CountdownC/F Center FrequencyC/o Checkout
CutoffC/S Counts per SecondCA Cone Angle
Cost Account'CorrectiveAction KR
CAB Civil Aeronautics BoardCACON Cargo ContainerCAD Computer Aided DesignCADE Controller/Attitude-Direct ElectronicsCADS Command and Data SimulatorCADSI Communications and Data Systems IntegrationCADU Control & Display UnitCAL Cornell Aeronautical LaboratoryCAM Computer Aided Manufacturing
Content Addressable Memor y isCAN Certification Analysis Network x
CAP Contractor Acquired PropertyCost Account Package
CAR Corrective Action RequestCertification Approval Request
CARID Customer Acceptance Review Item DispositionCARR Customer Acceptance Readiness ReviewCAS Command Augmentation System l
' CAU Command Acquisition UnitCustomer Acquisition Unit
CB Circuit Breaker •,CBIL Common and Bulk Items ListCBR California Bearing RatioCBX C-Band TranspondehCCA Contract Change AuthorizationCCAFS Cape Canaveral Air Force StationCCATS Command, Communication & Telemetry Subsystem"CCB Configuration Control BoardCCBD Configuration Control Board Directive
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V I I ICCC Controller Checkout Console
Central Computer ComplexCCD Change-Coupled Device
Checkout Command DecoderCCF Converter Compressor facilityCCL Commonality Candidate List
F CCM Controlled Carrier ModulationCrew/Cargo Module
CCMS Command Control & Monitoring SystemCheckout, Control & Monitor Subsystem
CCN Contract Change NegotiationContract Change Notice
CCOH Corrosive Contaminants, Oxygen 5 HumidityCCP Configuration Control Panel
Configuration Change PointContract Change Proposal
CCRA Cape Canaveral Reference AtmosphereCCS Central Control Section
Command and Communication SystemComplex Control Set
CCTV Closed Circuit Television a
CCV Chamber Coolant ValveCCW CounterclockwiseC&D Control & DisplayC&DS, Command and Data Simulator
' CD Candella (luminous intensity)CDA Command & Data Acquisition aCDBFR Common Data BufferCDC Countdown ClockCDDT Countdown Demons*ration TestCDF Circuit Design Fabrication
Confined Detonating FuseCentral Data Facili ty
CDF & TDS Circuit Design, Fabrication & Test Data SystemsCDI Course Deviation Indicator
E CDMS Command Data Management SystemCDPIS Command Data Processing & 'Instrumentation SystemCDQR Critical Design and Qualification Review
- CDR Critical Design Reviewa Commander
tCDRR Contract Documentation Requirements RecordsCOS Central Data System (Subsystem)CDSC Communications Distributing & 'Switching Center,'CDT Countdown Time
Central Daylight Time r
E Command Descriptor Table! CE Civil Engineering
Change EvaluationCEC Control Encoder Coupler
f CEI Contract End Item{ CEIAC Coastal Engineering Information Analysis Center
CEQ Council on Environmental Quality1
FCER Cost Estimating Relationship
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CFE Contractor Furnished Equipment F
CFM Cubic Feet Per MinuteCFSTI Clearinghouse For Scientific & Technical InformationCFY Company Fiscal YearCG Center of GravityCGC Command Guidance ComputerCH ChannelCHR Cooper-Harper RatingCI Configuration InspectionCIB Change Impact Board
Change Implementation BoardCIC Control and Information CenterCIF Central Instrumentation FacilityCIL Critical Items ListCIS Central Integration Site
Change Impact. Summary 1
CIU Computer Interface UnitCL Closed Loop
Centerline '`+CLM Care Logic ModuleCLMC Central Logistics Management CenterCLS Contingency Landing Site
CM
Configuration ManagementConsumables ManagementCrew Module
CMA Configuration Management AccountingCMAO Contract Management Assistance OfficerCMAT Compatible Materials List
i CMD CommandCMG Control Moment GyroCMM Condition Monitored MaintenanceCM0 Configuration Management Office aCMRB Contractor Material Review BoardCM&S Communications Maintenance and StorageCMTS Computerized Maintenance Test SystemCNWDI Critical Nuclear Weapons Design InformationC of F Cost of Facilities
i CO Change OrderContracting Officer
CO2 Carbon DioxideCOAS Coarse Optical Alignment Sight AK'`
Crew Optical Alignment Sight
} COB Communications Office BuildingCDC Close Open CloseCOF Construction of facilitiesCOFI_ Checkout & Fault Isolation (Onboard)COFR Certificate of Flight. Readiness
f; COFW Certificate of Flight WorthinessC&M Control and Monitoring
COMAS Combined Orbital Maneuvering & Abort System
Comm CommunicationsCOMPEN CompensatorCOMPOOL Common Data ,Pool
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COMPR CompressorCOMR&OSAT Communication Research & Development SatelliteCOMSEC Communications SecurityCONN Connect
CONT ControlCONUS Continental United States
- CDR Contracting Officer Representative s
COS Console Operating SystemCOSATI Committee On Scientific & Technical InformationCOSI Closeout System InstallationCP Circular Pitch
Center of PressureConsole Processor
CPA Critical Path AnalysisContingency Planning Aid ! E
CPAF Cost Plus Award FeeCPC Central Planning Center
Computer Program ComponentCPCR Computer Program Change RequestCPD Crew Procedures DivisionCPDS Computer Program Design (or Development) SpecificationCPE Chief Program Engineer-CPEI Computer Program End ItemCPF Cargo Processing Facility
Cost Per FlightCPFF Cost Plus Fixed FeeCPIF Cost Plus Incentive FeeCPM Computer Program Module
Critical Path MethodCPMP Crew Procedures Management PlanCPR Critical Problem ReportCPS Cycles Per Second
-CPSE Common Payload Support EquipmentCPT Cargo Processing TechnicianCPU Central Processing UnitCR Change,RequestCRAS Cost Reduction Alternative StudyCRB Change Review BoardCRC Cost Reduction CurveCRES Corrosion Resistant SteelCRG Correspondence Review GroupCRIS Calibration Recall 5 Information System
-CRN Contract Revision NumberCRPL Cosmic Ray Physics LaboratoryCRR Critical Requirements Review
Computer Run ReportCRSI Ceramic Reusable Surface InsulationCRT Cathode-Ray Tube
1CRYO CryogenicC/SCSC Cost Schedule Control Systems CriteriaCS Crew Station
Change StatusCSA Cyclic Strain Attenuator
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CSC Cosecant Computing AmplifierConical Shaped Charge E
CSCSAT Commercial Synchronous Communication SatelliteCSDD Control Systems Development DivisionCSDL Charles Stark Draper Laboratory (MIT)CSE Common Support EquipmentCSF Cost Sensitivity FactorCSI Control Servo InputCSM Common Support ModuleCSR Crew Station Review 4
Check Signal ReturnCSRP Computers & Software Review PanelCSS Care Segment Simulator
Computer Subsystem jControl Stick Steering a
CST Central Standard TimeCrew Station TrainerContract Supplemental Tooling
C&T Communication and TrackingCT Crawler Transporter r
CTA Controlled Thrust AssemblyCTC Chief Test Conductor
Camera, Timing & ControlCTL Control
Canoga Test LaboratoryCTM Crystalline Transitional Material
Contract Technical ManagerCTN Certification Test Network qCTP Communications Timing ProcedureCTR Contract Technical RepresentativeCTS Communications & Tracking System
Computer Test SetCTU Central Timing Unit
CUB Commonality Usage BoardCUC Computer Usage ControlCUE Common Usage Equipment s
CUDS Cumulative Data StatisticsCUIL Common Usage Item ListCUM CumulativeCUP Commonality Usage ProposalCV Coefficient of VariationCVAS Configuration Verification Accounting SystemCVT Concept Verification Test
f` C&W Caution and Warning
CW Continuous WaveClockwise
CWA Clean Work Arear CWG Constant Wear Garment
CY Calendar Year
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D DeltaD/A Digital-to-AnalogD/L Downlink
j DABS Discrete Address Beacon SystemDAC Digital-to-Analytical Conversion
Data Acquisition & Control 9DACBU Data Acquisition & Control Buffer Unit lDACS Digital Acquisition & Control SystemDADS Dual Air Density SatelliteDAIS Digital Avionics Information System ?DAL Data Accession List
Data Aided LoopDAP Digital Auto PilotDAR Data Aided Receiver
Digital Autopilot RequirementsDARTS Digital Automated Radar Tracking System rDAS Data Analysis StationDASA Dual Aerospace Servo AmplifierDAU Data Acquisition UnitDB Decibels
Dry Bulb a
DBIU Data Bus Interface Unit tOBRN Data Bank Release NoticeDBUR Data Bank Update RequestD&C Displays and ControlsDC Direct CurrentDCA Design Change Authorization
`.- - DCAA Defense Contract Audit AgencyDCAR Design Corrective Action ReportDCAS Defense Contract Administration ServicesDCC Document Control CenterDCN Document Change Notice
Design Change NoticeDrawing Change Notice
DCOP Displays, Controls $ Operation Procedures t' DCP Data Collection Platform
DCPEI DEU Control Program End ItemDCR Design Certification Review_., r
Document Change RecordDesign Concern Report
O&CS Displays & Controls SubsystemDCS Design Criteria Specification
Data Control SystemDigital Command System (Subsystem)
DCSP Digital Control Signal Processor-bCU Display & Control UnitOCV DC VoltsDO Directives Documentation -DDA Digital Differential Analyzer
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DDAS Digital Data Acquisition System
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DD&CS Dedicated Display 5 Control SubsystemDDI Discrete Digital InputDDS Documentation Distribution System F
_DDT&E Design, Development, Test S Evaluation -4;
DDTF Dynamic Docking Test FacilityDOTS Dynamic Docking Test SystemDDU Display Driver UnitDE Design EngineeringDECL Direct Energy Conversion Laboratory (JSC)DECOM DecommutatorDEE Digital Events EvaluatorDECR DecreaseDECU Data Exchange Control UnitDEI Design Engineering IdentificationDEIS Design Engineering Inspection Simulation
Design and Evaluation Inspection SimulatorDEL DeliveryDEMOD DemodulateDEMUX Demultiplexer sDER Drawing Error ReportRESAT DesaturatedDESPOT Design Performance OptimizationDET Digital Event TimerDEU Display Electronics UnitDEW Distant Early darningDF Development Flight
Direction FindingDFCS Digital Flight Control Software
Digital Flight Control SystemDFI Development Flight InstrumentationDFRC Dryden Flight Research CenterDG Display GeneratorDIDS Defense Integrated Data SystemDIM Design Interface MeetingDIPEC Defense Industrial Plant Equipment CenterDIST DistributionDIU Digital Interface UnitDLAT Destructive Lot Acceptance Testing tDLSC Defense Logistics Services Center i
DLTR Data Link Transmission RepeaterDMA Direct Memory AccessDMC Direct Maintenance Cost a'DMCF Deservicing, Maintenance S Checkout Facility tDMS Bata Management System
Docking Mechanism Subsystem 1DMSS Data Management System Simulator (CVT)DNA Does Not ApplyDNP Dynamic Nuclear PolarizationDOD Department of DefenseDOF Direction of Flight
Degrees of freedomDOMSAT Domestic Communications Satellite
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DOS Disk Operating SystemDOT Department of TransportationDOT/CIAP department of Transportation/Climatic Import i
} Assessment ProgramDP Delayed Procurement
Design ProofDouble PoleDevelopment Phase
j DPI Detail Program InterrelationshipsDPR Definition Phase ReviewDP&S Data Processing & SoftwareDPS Data Processing System (Subsystem)
Data Processing SoftwareOPT Design Proof TestOR Discrepancy Report
Dispatch ReliabilityORB Design Review BoardDRD Data Requirements DescriptionDRI Data Rate IndicatorORL Data Requirements ListDRM Drawing Requirements Manual -'1
Design Reference MissionORR Design Requirements ReviewDRS Data Relay Station
Digital Range Safety
DRSS Discrepancy Report Squawk Sheet 1OSA Defense Supply AgencyDSN Deep Space Network
_i t DSPM Designated Subsystems Project ManagerOSS Deep Space Station
Department Summary ScheduleDST Dimensional Special ToolingDT Drop TankDTA Development Test ArticleDTCS Digital Test Command SystemDTCW Data Transfer Command WordDTMO Design, Test & Mission Operations
Development, Test & Mission OperationsOTMS Digital Test Measurement SystemDTRD Development Test Requirements DocumentOTS Data Transmission System
Data Transfer SystemOU Display Unit
t DUPLX(R) Duplex(er)DVS Design Verification Specification
DWG Drawing
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E Exempt (From Traceability) dElevation Angle
_ E=E End to EndE/C Encoder CouplerE/O-IMS Engineering/Operations-Information Management System
EAC Estimate At CompletionEAFB Edwards Air Force Base
EAG Expendable AgenaEAR Engineering Analysis Report
EAS Equivalent Air SpeedEAT Environmental Acceptance Test ,
EB Electronic BeamEBW Explosive Bridge Wire
1EC Element ContractorECB Events Control BufferECCB Engineering Change Control Board
ECI Earth Centered InertialECLS Environmental Control and Life SupportECLSS Environmental Control & Life Support SubsystemECO Engine Cutoff
Engine CombustionECP Engineering Change ProposalECR Engineering Change RequestECS Environmental Control System
Engine Control SystemECU Environmental Control UnitED Edge Distance
Engineering DirectiveEDA Electronic Display AssemblyEDB Environmental Data BookEDC Engineering Design ChangeEDCP Engineering Design Change ProposalEDDR Electron Dipole-Dipole ReservoirEOF Engineering Data FileEDLN Engineering Development Logic NetworkEDP Electronic Data Processing
EDP&C Electrical Power Distribution 5 Control
EDR Engineering Design ReviewEDS Emergency Detection SystemEDT Eastern Daylight TimeEED Electro Explosive DeviceEEE Electronic, Electrical, Electromechanical
EFFGRO Efficient Growth (Computer Program)EETB Electronic Electrical Termination BuildingEGA Evolved Gas AnalysisEGT Exhaust Gas TemperatureEHF Extremely High FrequencyEHOT External Hydrogen/Oxygen TankEHP Electrical Horsepower
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EI Electromagnetic Interference
e
End Item
Entry InterfaceEIA Electrical Industries AssociationEIC Experimental IntercomEIDP End Item Data Package
- EIFA Element Interface Functional AnalysisEIS End Item SpecificationEIU Engine Interface UnitEIVT Electrical & Instrumentation Verification Tests
Electronic Installation Verification TestElectrical Interface Verification Test
EKG ElectrocardiagraphEL Elastic LimitELACS Extended Life Attitude Control SystemELMS Elastic Loop Mobility SystemELS Earth Landing System (Subsystem)ELSC Earth Landing Sequence ControllerELT Emergency Locator TransmitterEM Engineering Model
Exception MonitorEMA Electromagnetic AnalysisEMC Electromagnetic CompatibilityEMF Electromotive ForceEMG Surface ElectromyogramsEMI Electromagnetic Interference !EMN Engineering Management NetworkEMP Equipment Mounting PlateEMR Engine Mix RatioEMS Engineering Master Schedule
Entry Monitor SubsystemEMU Extravehicular Mobility UnitENC Encode
•' ' ENDF Evaluated Neutron Data FileENG Engine
EngineeringENVIR EnvironmentalED Engineering Order
Earth Orbit i
EOC Engine Order CapabilityEOD Explosive Ordnance DisposalEOF End Of File ^^°• '^
EOHT External Oxygen & Hydrogen TanksEOL End Of LifeEOM Engineering Operations Manual
Equations Of MotionsEOP Emergency Oxygen PackFOR Earth Orbital RendezvousEOS Emergency Oxygen System
Earth Orbit Shuttle
-Earth Observation Satellite
EO'i End Of Tape iEPC Error Protection Code {
External Power Contractor
2-16
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EPOCS Electrical Power Distribution & 'Control SystemEPD Electrical Power GeneratorEM Engineering Performance Management SystemEPO Element Project OfficeEPRX Emergency Program Release NoticeEPS Electrical Power Subsystem
Experimental Power SupplyEPT Emergency Procedure Trainer
Ethylene Propylene TerpolymerEPTU Events Per Time UnitED EquivalentER Explanation ReportERA Electrical Replaceable AssemblyERAP Earth Resources Aircraft ProgramERB Engineering Review BoardERP Effective Radiation Power
Effected Radiative PowerEye Reference Point
ERRC Expendability Recoverability Repair CapabilityERS Engineering Release SystemERSI Elastomeric Reusable Surface InsulationERTS Earth Resources Technology SatelliteESA Explosive Safe Area
European Space AgencyESCA Electron Spectroscopy for Chemical .AnalysisESE Electrical Support Equipment < < y
Electronic Support EquipmentESPS Experiment Segment & Pallet Simulator aESR Engineering Support RequestESRO European Space Research OrganizationESS Experiment Subsystem SimulatorESSA Environmental Sciences Services AdministrationEST Estimate
Eastern Standard TimeESTL Electronic Systems Test LaboratoryESU Emergency Shutoff ValueESV Emergency Shutoff ValveET External Tank i
Edge ThicknessEvent Timer
ETA Estimated Time of Arrival,ETC Estimate To CompletionETLOW External Tank Lift-Off WeightETR Eastern Test RangeETROD Eastern Test Range Operations DirectiveETS Electrical Test SetETSS External Tank. Separation SubsystemEU Electronic Unit
Experimental UnitEVA Extravehicular Activity g
Earned Value AnalysisEVCON Events Control SubsystemEVF Equipment Visibility File
1
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EVM F,rth Viewing Module rEVS Equipment Visibility SystemEVSS Extravehicular Space SuitEWA Estimated Warehouse ArrivalEWE Emergency Window EscapeEWR Engineering Work RequestEXP Experiment
-F- =a1
F Farrad (SI Unit of Capacitance)Fahrenheit
F/E Full Emptyter+
F/F Flip/FlopF/0 Fuel/OxidizerFA Final Assembly
Failure AnalysisFully Automatic
FAA Federal Aviation AdministrationFAB FabricateFAC FacilityFACT First Article Configuration InspectionFACO Final Assembly Checkout
Factory Assembly and Checkout
FAF First Aerodynamic FlightFAIR Fabrication, Assembly, & Inspection RecordFAL First Approach & Landing TestFAR Final Acceptance Review
Federal Aviation RegulationFailure Analysis Report
FAT Flight Attitude TableFAX Facsimile TransmissionFBC Fluidized-Bed CombustionFBCS Fixed Base Crew Station (SMS)FBS Firefighters Breathing System` '-FBV Fuel Bleed Valve
Field Base VisitFC Fit Check
Flight ControlFlight ComputerFuel Cell
FCA Frequency Control AnalysisFCAP Flight Control Applications ProgramFCC Flat Conductor CableFCCP Firm Contract Cost ProposalFCE Flight Crew Equipment
Flight Control Equi"v.ent
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FCEI Facility Contractor End ItemFCF First Captive FlightFCHL Flight Control Hydraulics LaboratoryFCL Froon Coolant LoopFCO Functional CheckoutFCOS Flight Computer Operating System
Flight Control Operating SystemFCP Fuel Cell Power Plant
Firm Cost ProposalFCPS Fuel Cell Power SubsystemFCR Final Configuration ReviewFORT Flight Display CRTFCS Flight Control Subsystem
Flight Crew SystemtCS1. Flight Combustion Stability :MonitorFCT Flight Crew TrainerFD Flight Director
Function DesignatorFDA Fault Detection & AnnunciationFDAI Flight Director Attitude IndicatorFOB Fahrenheit Dry BulbFDF flight Data FileFDI Fault Detection & IsolationFDIIR Fault Detection, Isolation, Identification &
RecompensationFDM Frequency Data Multiplexer
Frequency Division MultiplexingFOS Fluid Distribution SystemFDSC Flight Dynamics Simulation ComplexFOX Full DuplexF&E Facility & EnvironmentFEA Failure Effects AnalysisFEAT Final Engineering Acceptance Test r`FEC Field Engineering ChangeFED Flight Events DemonstrationFEID Flight Equipment Interface Device
Functional Engineering Interface DeviceFEMCPL Facilities and Environmental Measurement
Components Parts ListFEP Front End Processor
Floral Ethyl Propane ,• ,-FF Flip Flop a
z FFnn Functional Flow Block DiagramFFC Final Flight CertificationFFD Functional Flow DiagramFFM Free-Flying (Experiment) ModuleFFP Firmed Fixed PriceFFTO Free Flying TeleoperatorFHF First Horizontal FlightFHP Fuel High PressureFIAR Failure Investigation Action ReportFIFO First In-First Out (High Speed Data Buffers)FIIG Federal Item Identification Guide
2-19
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F I S Facility Interface Sheets
FIT Fault Isolation Test r7
FKB Flight Display KeyboardFL Flowline
Feed Lines_ FtC Federal Library Committee
FLT FlightFM Frequency ModulationF-MEA Failure Modes & Effects AnalysisFMEC Forward Master Events ControllerFMOF First MannedOrbital FlightFRM Field Modification Request 1FMX FM TransmitterFND facility Need Date 1
FO/FS Fail-Operational/Fail-SafeFOB Freight On Board
Flight Operations Building lFOD Flight Operations Directorate WSC)FOF First Orbital Flight ,FOPG Flight Operations Planning Group ^< ..
- FORTRAN Formula TranslationFOSDIC Film Optical Sensing Device for Input to ComputersFOV Field Of Vision
First Orbital VehicleFP Fuel Pressure
Freezing PointFunctional Path
FPB Fuel Preburner i
FPBOV Fuel Preburner b Oxidizer ValveFPE Functional Program ElementEPIF Fixed Price Incentive FeeFPL full Power LevelFPM Feet Per MinuteFPR Flight Performance Reserve
FPS Feet Per SecondFQR Flight Qualification Recorder
FR Firing RoomFRC Flight Research Center (now DFRC) i
FRCS Forward Reaction Control SubsystemFRF Flight Readiness FiringFRR Flight Readiness Review k. rFRRID Flight Readiness Review Item DispositionFiT Flight Readiness TestrS Fail Safe
Federal SpecificationFSAA Flight Simulator for Advanced AircraftFSC Federal Stock ClassificationFSCM Federal Supply Code for ManufacturersFSI Final Systems InstallationFSIM Function SimulatorFSK Frequency Shift KeyedFSLT First Sea Level TestFSN federal Stock Number ".
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FSS Flight Systems SimulatorFSSR Functional Subsystem Software RequirementsFSTE Factory Special Test Equipment rFT Flight TestFTA Fatigue Test ArticleFTC Flight Test ConductorFTE Factory Test Equipment
Forced Test EndFTIS Flight Test Instrumentation SystemFTOH Flight Team Operations HandbookFTP Functional Test ProgressFTRD Flight Test Requirements DocumentFUNCT FunctionalFUO Follow-up OutputFV Front ViewFVF First Vertical FlightFWB Fahrenheit Wet BulbFWD ForwardFWWM Food, Water & Waste ManagementFWWMS Food, Water & Waste Management SubsystemFY Fiscal Year
G GravityG-A Ground-to-AirG-G Ground-to-GroundG&A General & AdministrativeGA Gyro AssemblyGAC Grumman Aerospace CorporationGAIN Graphic Aids for Investigating NetworksGAM GammaGAD General Accounting Office t
GAP GOAL Automatic ProcedureGAPL Group Assembly Parts List °
3
GATT Gate Assisted Turn Off ThyristorGSI Grand Bahama IslandGBL Government Bill of LadingG&C Guidance & ControlGCA Ground Controlled ApproachGCOC Ground Checkout Display & Control Syste+n
GCI Ground Controlled InterceptionGCS Guidance Cutoff SignalGCTS Ground Communication Tracking SystemGCU Gyro Coupling Unit
Generator Control Unit
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GOBS Generalized Data Base SystemGDS Goldstone, California (STDN)GE General ElectricGEDAC General Electric Detection & Automatic CorrectionGEOPAUSE Geodetic Satellite in Polar Geosynchronous OrbitGEOSEPS Geosynchronous Solar Electric Propulsion StageGERT Graphical Evaluation & Review TechniquesGET Ground Elapsed TimeGETS Ground Equipment Test SetsGF&P Gases, Fluids & PropellantsGFAE Government Furnished Aircraft EquipmentGFD Government Furnished DataGFE Government Furnished EquipmentGFP Government Furnished PropertyGFRP Graphite Fiber Reinforced PlasticGFY Government Fiscal YearGH2 Gaseous HydrogenGHA Greenwich Hour-Angle
General Housekeeping AreaGHe Gaseous Helium ^<<GIM Generalized Information ManagementGITS Ground Interface Technical GroupGdWS Ground Interface Working GroupGLAADS Gun Low Altitude Air Defense SystemGLC Generator Line ContractorGLOW Ground Lift-Off WeightGLY GlycolGMAP General Electric Macro Assembly LanguageGMIL Spaceflight Tracking and Data Network Station (KSC)GMT Greenwich Mean TimeG&N Guidance & NavigationGN2 Gaseous NitrogenGN&C Guidance, Navigation & ControlGNC Guidance and Navigation ControlGNCIS Guidance, Navigation & Control Integration SimulatorGND GroundGNP Gross National ProductGO General Order iG02 Gaseous OxygenGOAL Ground Operations Aerospace LanguageGOCA Ground Operations Control AreaGOPG Ground Operations Planning Group r°GORP Ground Operations Requirements PlanGOSS Ground OperationsSupport SystemGOX Gaseous Oxygen (G02)GP General Purpose 4
General Publication (KSC)GPAS General Purpose Airborne SimulatorGPC General Purpose Computer
Gel Permeation ChromatographGPCB GOAL Program Control BlockGPME General Purpose Mission EquipmentGPRN GOAL Test Procedure Release Notice
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GPSS General Purpose Simulation System (IBM)
GPTE General Purpose Test Equipment
GPUR GOAL Test Procedure Update Request fGRID Graphic Retrieval & Information Display ".
GSA General Services Administration
GSC GOAL System Configuration
GSCU Ground Service Cooling Unit
GSDL Ground Software Development Laboratory
GSE Ground Support Equipment
GSEL Ground Support Equipment List
GSFC Goddard Space Flight Center (Greenbelt, MD)
GSVP Ground Support Veri'.ication Plan
GT Grount Test
GT&A Ground Test and Acceptance
GTA Ground Test Article
GTI Grand Turk Island
GUL GSE Utilization List
GVT Ground Vibration Test
GVTA Ground Vibration Test Article
• GW Gross Wei ht-' GWA General Work Area
GWM Guam (STDN)
GWT Ground Winds Tower
GYM - Guaymas, Mexico (Remote Site)
GYROA Gyro A
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H Henry (SI Unit)H2 Gaseous Hydrogen
H/E Heat Exchanger
H/L Hardline
H/S Heat Shield
u H/T Heat Treat
HA Hazard Analysis,.";.Y>
HAA High Altitude Abort
HAFB Holloman Air Force Base -
HAL High-Order Assembly Language
—HAS Holddown Alignment Support
HAST High Altitude Supersonic TargetHAWHawaii (STDN)
HB High Bay
HBW Hot Bridge Wire 7HC Head Count
Hybrid Computer
HCMM Heat Capacity Mapping Mission
2-23
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` HDQTRS HeadquartersHONE Hardware }He HeliumHEM Hatchhike Experiment ModuleHEO High Energy OrbitHEPA High Efficiency Particle Accummulator
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HER HIM Equipment Rack j
HERSCP Hazardous Exposure Reduction & Safety Criteria PlanHESS High Energy Squib SimulatorHF High Frequency
Horizontal FlightHFC Hydraulic Flight Control
Heat Flow & ConvectionHFCT Hydraulic Flight Control PestHFCV Helium Flow Control ValveHFT Horizontal Flight TestHFTF Horizontal Flight Test FacilityHFTS Horizontal Flight Test SimulatorHFX High Frequency TransceiverHGA High Gain AntennaHGDS Hazardous Gas Detection SystemHGM Hot-Gas ManifoldHGR&SPTFAC Hangar and Support FacilityHGVT Horizontal Ground Vibration TestHI Honeywell, Inc.HIM Hardware Interface Module
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HIPO Hierarchical Input-Process OutputHL Hinge Line
Heel LineHMG Hybrid MicrocircuitHMF Hypergol Maintenance Facility
Horizontal_ Mating FacilityHMP Hypergol Maintenance FacilitiesHMX CycloteramethylenetrinitraimineHNS HezanitrostilbeneHO Hydrogen-OxygenHOL High-Order LanguageHP High Pressure fHPFTP High-Pressure Fuel TurbopumpHPGS High Pressure Gas System s
HPI High Performance InsulationHPOP High Pressure Oxidizer PumpHPOTP High-Pressure Oxidizer TurbopumpHPS Hydraulics Power System ]HPU Hydraulic Power UnitHQ HeadquartersHR Hour
Hydrogen Relief aHRIR High Resolution Infrared RadiometerHRL Horizontal Reference LineHRPS Hazard Reduction Precedence Sequence -HRS Hours a
HRSI High Temperature Reusable Surface Insulation
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HRT High Resolution TrackerHS High Speed {
HSCU Hydraulic Supply and Checkout UnitHSF Hypergol Servicing Facility
HSG High Sustained G2 AccelerationHSI Horizontal Situation IndicatorHSL Hardware Simulation Laboratory
- HT Heat TransferHiLL High Test Level LanguageHTPB Hydroxyl Terminated PolybutadieneHTS Heat Transport SystemHUL Hardware Utilization ListHV High VoltageHVAC Heating, Ventilating & Air Conditioning
HVSF Honeywell Verification Simulation Facility
HVSL Holidays, Vacation & Sick LeaveHW Hotwire
HardwareHYD Hydraulics
Hydraulic Subsystem
HYGL Hypergolic 4"
HYPACE Hybrid_ Programmable Attitude Control Electronics
HZ Hertz (cycles per second)
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AI/F Interface
I/FU Interface Unit., L/0 Input/Output
I/T Intertank
- IA Input Axis k
Implementation AgencyIssuing Agency
`Inverter Assembly
1 e AbstractsIAA International Aerospac bs actsIAD Interface Agreement Document
Interface Analysis Document
IAS Indicated Airspeed
•, IAV Inventory Adjustment Voucher
IB Inert BuildingInstruction Book
IBM International Business MachinesIBF Internally Blown Flap
I&C Installation & Checkout
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IC Intercommunications jInterim ChangeInformation Center rIntegrated CircuitIncremental CostIntercomputer Channel FF
ICA Item Change Analysis' ICAR Investigation & Corrective Action Report
ICS Interim Change BulletinInterrupt Control Block -
ICC Inter-Computer ChannelInterface Control ChartInterstate Commerce Commission
- ICCP Interface Coordination & Control ProcedureICD Interface Control DocumentICDU Inertial Coupling Data UnitICE Instrument/Communication Equipment
Instrument Checkout EquipmentINS Indirect Cost Management SystemICO Integrated CheckoutICR Instruction Change Request ^=ICS Interpretive Computer SimulatorICT Interface Control ToolingING Interface Control Working GroupID Inside Diameter
IdentificationInterface Document i
IDO Interdivisional OperationsIN Intermediates Design ReviewIND Information Definition Requirements DocumentIDS Item Description Sheet
Interface Data SheetIDTA Interdivisional Technical AgreementIDU Interface Demonstration UnitIDWA Interdivisional Work AuthorizationIEA Integrated Electronics AssemblyIF Intermediate FrequencyIFA Interface Functional AnalysisIFB Invitation For BidIFN Inflight MaintenanceIFO Information Systems OfficeIFR Instrument Flight RulesIFTV Interim Hypersonics Test VehicleIG Internal GuidanceIGA Inner Gimble AngleIGDS Iodine Generating & Dispensing SystemIGM Interactive Guidance ModeIHTV Interim Hypersonics Test VehicleILP Integrated Logistics PanelILS Instrument Landing System
Integrated Logistics SupportIMPL ImplementIML Inside Mold Line
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IMS Inventory Management SystemIMU Inertial Measurement UnitINC Installation Notice CardINCL IncludeINCR IncrementIND IndicatorINIT Initial
InitiateINS Inertial Navigation SystemINSTL Installation aINSTL & C/O Installation & Checkout
1INSTR InstrumentINSTRUM Instrumentation SubsystemINT Integrated TestingINTASAT Instituto National De Techice Aerospacial SatelliteINTV Interim Hypersonics Test VehicleINV MGT Inventory ManagementIO Industrial Operations (MSFC)IDA Input Output AdapterIOB Input/Output Buffer<IOC Initial Operational Capability
Input/Output ControllerI pdirect Operating Costs
IOP Input-Output Processor ?IOPL Integrated Open Problem List 1
IDS Instructor Operator StationIndian Ocean Ship (Tracking)Input/Output Supervision
IP Identification of PositionIntermediate Pressure
IPACS Integrated Power 5 Attitude Control SystemIPAD Integrated Program for Aerospace Vehicle DesignIPB Illustrated Parts Breakdown
Illuminated Push ButtonIPC Intermittent Positive. ControlIPCL Instrumentation Program 3 Component ListIPE Industrial Plant EquipmentIPL Indentured Parts List f
Initial Program Load
IPR Interim Problem Report {IPS Instrumentation Power Subsystem
Inverter Power Su PP'Y jInches Per SecondInternational Pipe Standard
IPT International Pipe ThreadI&R Interchangeability 3 ReplaceabilityI&RS Instrumentation b Range SafetyIR Infrared
Inside RadiusIRAN Inspection & Repairs As NecessaryIRD Information Requirements DocumentIRG Inertial Rate Gyro
2-27
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IRIG Inertial Rate Integrating GyroInter-Range Instrumentation Group r
IRL Interface Requirement ListIRME Initiator Resistance Measuring EquipmentIRN Interface Revision NoticeIRR Integral Rocket RamjetIRTCMS Integrated Real Time Contamination Monitor SystemIRU Inertial Reference UnitIRV Isotope Reentry VehicleI&S Interchangeability and SubstitutabilityIS Installation SupportISI Initial Systems InstallationISIL Interim Support Items ListISP Initial Specific ImpulseISPG Institutional Support Planning GroupISS Instruction Summary SheetIST Integrated Systems TestISTB Integrated Subsystem Test BedITE Instrumentation Test EquipmentITS Instrumentation Telemetry StationITI Inspection & Test InstructionIU Instrumentation UnitIUCS Instrumentation Unit Updata Command SystemIUS Interim Upper StageIVA Intravehicular ActivityIVAR Internal VariableIVE Interface Verification EquipmentIWBS Indirect Work Breakdown Structure
J Joule (SI Unit)J/M Jettison MotorJAN Joint Army-NavyJAS Journal of Aerospace Science }JB Junction Box IJCL Job Control languageJCT Junction
' JIR Job Improvement RequestJO Job OrderJOC Joint Operations CenterJOD Joint Occupancy DateJOP Joint Operating ProcedureJOR Job Order RequestJP Jet Propellant
Jet PropulsionJPIC Joint Program Integration Committee
2-26
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JPL Jet Propulsion LaboratoryJPP Joint Program PlanJSC Johnson Space Center iJSLWG Joint Spacelab Working GroupJST Joint Systems TestJURG Joint Users Requirements Group
-K_i
K KiloKevin ScaleOne Thousand
K-LBS Thousand Pounds <r ,•°"K-SM KSC Shuttle Management DocumentK-STSM KSC STS Management DocumentK/S Kick StageKAPL Kennedy Approved Parts ListKBPS Kilobits Per SecondKCAS Knots Calibrated AirspeedKCSKDN
Key Configuration StudiesKinetically Designed Nozzler
KHB Kennedy HandbookKHZ KilohertzKIAS Knots Indicated AirspeedKMI Kennedy Management InstructionsKN Kennedy NoticeKNO Kano, Nigeria (Remote Site)KOI Kennedy Operation InstructionKOPS Thousand of Operations Per SecondKPD Kennedy Program DirectiveKPRD Kennedy Program Req u irements Document kKPS Kilometers Per SecondKSC Kennedy Space CenterKVA Kilovoltamphere
KW KilowattKYBD Keyboard y
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L LeftLaunchLumenLevelLength
L/D Lift-to-Drag RatioLength to Diameter
L/0 Lift-OffLA Launch Abort
LanthanumLaunch AreaLaunch AzimuthLightning Arrestor
LACB Landing Aids Control BuildingLAD Los Angeles Division (Rockwell) s< ,.,LAGS Launch Abort Guide SimulationLARC Langley Research Center (Hampton, VA)LARS Laminar Angular Rate SensorLARSYSAA Laboratory for Application of Remote Sensing System
for Aircraft AnalysisLASCOT Large Screen Color Television SystemLAT Latitude
LateralLot Acceptance Test
LB Low BayLoad BankPound
LBOT Low Bay Dolly TugL&C Laboratory and CheckoutLC Launch ComplexLCA Launch Control AmplifierLCC Launch Control Center
Life Cycle Cost iLCCO Launch Commit Criteria DocumentLCD Launch CountdownLCG Liquid Cooled GarmentLCHTF Low Cycle High Temperature FatigueLCR Low Cross RangeLCU Line Coupling Unit
Length to DiameterL&D Landing & DecelerationLDB Launch Data BusLDEC Lunar Docking Events ControllerLDEF Long Duration Exposure FacilityLDS Landing, Deservicing & Safing
Landing/Deceleration Subsystem
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LEALEDLERCLESLESSLETFLF
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I LPMWS
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Launch Escape
Leading EdgeLoadsLogistics Engineering AnalysisLight Emitting DiodeLewis Research Center (Cleveland, OH)Launch Escape SubsystemLeading Edge Structure SubsystemLaunch Equipment Test FacilityLaunch FacilityLow FrequencyLoad FactorLow Gain AntennaLeft HandLiquid HydrogenLocal Hour-AngleLaser-RadarLimitLogistics Inventory Management SystemLiquid Injection Electric ThrusterLithium HydroxideLaunch & LandingLong LeadLow LevelLaunch b Landing Computational FacilitiesLaunch & Landing ProjectLower Mid FuselageLandmarkLockheed Missiles & Space CorporationLiquid NitrogenLanding
Liquified Natural GasLaunch OperationsLiquid OxygenLanding Operations AreaList Of Applicable PublicationsLine Of Balance -Launch Operations ComplexLevel Of EffortLevel Of Repair AnalysisLong Range NavigationLine Of SightLoss Of SignalLimit Of Visibility
Loss Of VisibilityLiquid OxygenLow PressureLaunch Pad -Launch Procedure DocumentLow-Pressure Fuel TurbopumpLiquid Propellant GunLaunch Pad Lightning Warning SystemLines Per Minute
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LPOP Low-Pressure Oxidizer PumpLPOTP Low-Pressure Oxidizer TurbopumpLpR Line PrinterLPS Launch Processing System
Liters Per SecondLPW Lumens Per WaitLRSI Low Temperature Reusable Surface InsulationLRU Line Replaceable UnitLRV Launch Readiness VerificationLUS Logistics '& SupportLS Limit SwitchLSB ,Lower Side Band
Least Significant ,BitLSC Linear Shaped ChargeLSE Launch 'Support Equipment
Life Support EquipmentLSD Landing Ship DockLSM Life Science ModuleLSR Land Sea Rescue
Launch Site RecoveryLSS Life Support SubsystemLSSL Life Sciences Space LaboratoryLSSM Launch Site Support ManagerLS/ST Light Shield/Star TrackerLST Launch Support Team
Local Standard TimLiquid Storage TankLarge Stellar TelescopeLarge Space Telescope
L&T Laboratories & TestLUT Launcher-;Umbilical TowerLV Launch VehiciE
Lift VectorLow Voltage
LVDC Launch Vehicle Digital ComputerLVOT Linear Voltage Differential TransformerLVLH Local Vertical/Local HorizontalLWR LowerLWS Lightning Warning System
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M MaintainabilityM- Time in Days Before Move OperationsM-KG Meter-KilogramM-M-L-S Model-Modes-Loads-StressesM/S Measurement StimuliM/SCI Mission/Safety Critical ItemM/U Mockup pMA Master
Maintenance AbilityMilliamperesMaterial Authorization kMissed ApproachMike Amplifier
Ma Maintenance (STS)MAA Mathematical Association of AmericaMAB Missile Assembly Building e
Mechanical Automation BreadboardMaterials Advisory Board
MAC Mean Aerodynamic ChordMulti-Access Computer
` Maintenance Advisory CommitteeMilitary Airlift Command
MACH MachineMACO Major Assembly CheckoutMACRO Merge & Correlate Recorded Output (Program)MAD Maintenance Analysis Data
Madrid, Spain (STDN)MAF Mixed Amine Fuel
Manpower Authorization fileMichoud Assembly Facility
MAG MagneticMagnitude
W Machine-Aided IndexingMAIDS Management Automated Information Display System
Multipurpose Automatic Inspection & Diagnostic System
MAIR Manufacturing And Inspection RecordMAL Malfunction
Material Allowance ListMALL MalleableMAN Manual
Microwave Aerospace NavigationMAP Missed Approach Point
Message Acceptance PulseMaintenance Analysis Program
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MAPOLE Magnetic Dipole Spark TransmitterMATCO Material ControlMATL MaterialKAU Million Accounting UnitsMAX MaximumMAXCO Maximum Dynamic PressureMBCS Motion Rase Crew Station (SMS)MBFP Manufacturing, Build and Flow PlanMSPS Megabits Per SecondMBO Management By ObjectiveMB5 Megabits Per SecondMBV Main Base VisitM&C Maintenance & CheckoutMCBF Mean Cycle Between FailuresMC&C Met C d d C t 1asuremen omman- an on roMCC Main Combustion Chamber
Mission Control CenterMCC-DOD Mission Control Center - DODMCC-H Mission Control Center - HoustonMCC-K Mission Control Center - KennedyMCC-NASA Mission Control Center - NASAhCCC Mission Control and Computing CenterMCCS Mission Control Center Simulation (System)MCDS Multifunction Cathode Ray Tube Display SystemMCDU Multifunction CRT Display UnitMCF Maintenance & Checkout FacilityMCIU Manipulator Controller Interface UnitMCL Master Configuration ListMCN Master Change NoticeMCO Mission Control OperationsMCOP Mission Control Operations PanelMCP Master Change Proposal
Master Computer ProgramMeasurements Control ProcedureMission Control ProgrammerMaterials Control Plan
MCR Master Change Record
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MCS Maintenance & Checkout StationMeasurements Calibration System
MCW Modulated Continuous WaveMD Mission Director
MicrodotMaster DimensionMalfunction Detection
MDA Maintainability Design ApproachMDAC McDonnell Douglas Aircraft CorporationMDAR Malfunction Detection Analysis b RecordingMOAS -Meteorological Data Acquisition System
Mission Data Acquisition SystemMOB Mission Data Book aMDC Main Display Console
^- Mission Director Center,_
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ORIONAL PAGE ;1
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MOCS Maintenance Data Collection SystemMaterial Data Collection SystemMaster Digital Command System
MOD Mate/Demate DeviceMOE Modular Display Electronics
Mission Dependent Equipment- Mission Dependent Experiment
MDF Mating/Demating FacilityMild Detonating Fuse
MDL Master Data LibraryMOM Multiplexer/DemultipiexerMDR Maintenance Demand Rate a
Missing Data ReportMajor Design ReviewMinor Discrepancy RepairMission Data Reduction 1
MORD Mission Data Requirements DocumentMDS Management Data System
Master Development ScheduleMalfunction Detection SystemMinimum Discernible System
MDT Mountain Daylight TimeMeasurement Descriptor TableMean Down TimeMean Detonating Time
ME Main EngineManagement EngineeringMiscellaneous Equipment
MEA Maintenance Engineering AnalysisMain Electronics Assembly 3
MEARS Maintenance Engineering Analysis RecordsMEBO Main Engine Burnout- 1MEC Main Engine Controller
Master Event Controller
MECA Main Engine Controller AssemblyM Computational FacilitiesMECE Main Engine Co ut lon 19 mP
MECH MechanicalMECO Main Engine CutoffMECR Maintenance Engineering Change RequestMED Medium
Medical t
MEDICS Medical Information Computer System''''MEE Mission Essential EquipmentMEG MegohmMEI Master Inspection ItemMEL Minimum Equipment ListMELI Master Equipment List IndexMEOP Maximum Expected Operating PressureMEP Mean Effective Pressure
Management Engineering ProgramMER MeridianMERL Materials Engineering Research LaboratoryMERSAT Meteorology and Earth Observation Satellite
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MeteorologicalMF Medium Frequency
Mate and FerryMFA Manned Flight Awareness
_ MFBP Manufacturing Flow & Building PlanMFC Multiple Flight C=p - +or
Multiple Flight ControllerMFD Malfunction Detection
Master file DirectoryMFG Manufacturing
Major Functional GroupMFR Maximum Flight Rate
Multifunctional ReceiverMFT Mean Flight TimeMFV Main fuel ValveMG Magnesium
Mobile GeneratorMGA Middle Gimbal AngleMGE Maintenance Ground EquipmentMGMT ManagementMGSE Mechanical Ground Support EquipmentMGT Major Ground TestMGVT Mated Ground Vibration Test 1MHD Multi-Head DiscMHE Material Handling EquipmentMHF Medium High FrequencyMHZ Megahertz (Megacycles per second)MI Mile
' MIA Multiplex Interface AdapterMIC Management Information Center iMICIS Material Inventory Control & Inventory SystemMICOM Missile Command (Army) 3MICE Management. Information and Control SystemMIL MilitaryMILA Merritt Island Launch AreaMIMOSA Mission Modes and Space AnalysisMIms Medical Information Management System iMIN Minimum
MinuteMIO_ Management Integration OfficeMIP Mandatory Inspection Point
Modification Instruction PackageMIPS Merritt Island Press SiteMIR Malfunction Investigation ReportMIS Management Information System
Mission Information SubsystemMISC MiscellaneousMISS MissionMIT Massachusetts Institute of Technology (CSDL)MITTS Mobile Igor Tracking Telescope SystemMIUS Modular Integrated Utility SystemsKI Mechanical Joint
2=36
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I I'- ML Mobile Launcher
r`Mold Line
MLC Mobile Launcher ComputerMLG Main Landing GearMLGS Microwave Landing Guidance SystemMLI Multilayer insulation
- MLP Mobile Launcher PlatformML PED Mobile Launcher Pedestal
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MLS Microwave Landing SystemM&M Materials & MaintenanceMM Millimeter
Mass MemoryMan-MonthMain Module
MMC Mission Management CenterMMDF Mission Model Data File14M Monomethyl Hydrazine
Maintenance Man-HourMML Master Measurement List ,?MMLS Model-Modes-Loads-Stresses y• _%'MMOS Multimode.Optical SensorMMSE Multiuse Mission Support EquipmentMMU Manned Maneuvering UnitMO Manufacturing Order
MonthMajor ObjectiveMolybdenum
MOA Make On ArrivalMemorandum Of Agreement
C. MOCF Mission Operations Computational Facilities3
MOCR Mission Operations Control RoomMOCS Multichannel Ocean Color Sensor nMOD Modification
ModulatorModule
MODART Methods of Defeating Advanced Radar ThreatsMODEM Modulator-DemodulatorMOF Manned Orbital Flight i
MORO Mission Operations Requirements Document +MORT Management Oversight and Risk TreeMOS Metal Oxide Semiconductor
Metal Oxide on a SubstrateMOSPO Mobile Satellite Photometric ObservatoryMOT MotorMOU Memorandum Of UnderstandingMOV Main Oxidizer ValveMP Medium Pressure
Management PackageM&P Material & ProcessingMPB Maintenance Parts BreakdownMPG Multipoint GroundingMPHE Material & Personnel Handling Equipment a
Y 2-37
" MPL Minimum Power LevelMaintenance Parts List r
MPM Manipulator Positioning MechanismMPP Material Processing Procedure
Merit Promotion PlanMPR Maintainability Problem ReportMPS Main Propulsion Subsystem
Master Program ScheduleMPSR Mission Profile Storage& Retrieval a
MPT Main Propulsion TestMPTA Main Propulsion Test ArticleMPTF Main Propulsion Test FacilityM&R Maintenance & Refurbishment
Maintenance & Repair fiMR Mixture RatioMRA Mechanical Readiness AssessmentMRB Material Review BoardMRC ?4aasurement Requirements Committee`MRD Mission Requirements Document ^a
Material Review Disposition
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MRIR Medium Resolution Infrared RadiometerMRL Material Requirements ListMS Millisecond
Mass SpectrometryMilitary Standard (Parts Designation) eMaster SwitchMachine ScrewMachine SteelMilestone
MSA Material Service AreaMinimum Surface Area
MSB Most Significant BitMSBL5 Microwave Scanning Beam Landing StationMSC Master Sequence Controller
Materials. Service CenterMSDS Multispectral Scanner and Data SystemMSE Maintenance Support Equipment
Medical Support EquipmentMSF Manned Space FlightMSFC Marshall Space Flight CenterMSG Message ur
MSI Maintenance Significant ItemsMSL Mean Sea Level
Mechanical Systems LaboratoryMS/MS Material Science and Manufacturing in Space
MSM Manned Support ModuleMSO Model for Spares OptimizationMSOCC Multisatellite Operations Control CenterMSS Manufacturers Standardization Society
Mission Specialist StationMobile Service StructureMultispectral Scanner System
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MST Mountain Standard TimeMeasurement Status Table
MSU Mass Storage UnitMeasuring Stimuli Units
MSW MicroswitchMT Magnetic Tape
MountMountain TimeMaximum TorqueMaster TimerMechanical TechnicianMaster Tool
MTA Major Test ArticleMass Thermal Analysis
MTS Materials Testing BranchMTBF Mean Time Between FailuresMTBM Mean Time Between MaintenanceMTBMA Mean Time Between Maintenance ActionMTC Master Thrust Control r:.
MTCA Monitor & Test Control AreaMTCU Magnetic Tape Control Unit
0 MTD MountedMTDSK Magnetic Tape DiskMTE Multi-System Test EquipmentMTF Mississippi Test Facility (Now NSTL)MTFO Modular Training Field OptionMTV MountingMTL MaterialMTM Methods Time MeasurementMTO Mission, Task, Objective
Modification Task OutlineMTP Master Test Plan
Mission Test PlanMTR Mean Time to RepairMTS Magnetic Tape Station '(system)MTTA Mean Time to AccomplishMTTF Mean Time to FailureMTTFF Mean Time to First Failure Y_
MTTR Mean Time to RepairMTU Magnetic Tape Unit
Master Timing UnitMobile Training Unit
MU Mobile UnitMultiple UnitMaster Unit
MUA Maximum Usable AltitudeMUF Maximum Usable FrequencyMULT MultipleMUMS Multiple Use Marc SystemMUX MultiplexerMV Manufacturing Verification
MillivoltMVA Megavolt Ampere
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Multipurpose Ventricular Actuating SystemMVC Master Volume Control r
Manual Volume ControlMVGVT Mated Vertical Ground Vibration TestMVM Mariner Venus/MercuryMVP Master Verification Plan
_ MW MilliwattMicrowave
MWB Master Work BookMWP Maximum Working PressureMWR Mean Width RatioMWV Maximum Working VoltageMX MultiplexMY Man Years 3
-N- 4'^ W = j
N2 NitrogenN2H4 HydrazineN204 Nitrogen TetroxideN/A Nest AssemblyN/B Narrow BandN/C Normally ClosedN/0 Normally OpenN/P Not -ProvidedNA Not ApplicableNAAL North American Aerodynamic Laboratory (Wind Tunnel)
I. NAC NacelleNAEC Naval Air Engineering CenterNAM National Association of ManufacturersNAP Navigation Analysis ProgramNAR Numerical Analysis ResearchNARS National Archives & Record ServiceNAS National Aircraft Standards
Naval Air StationNational Academy of Sciences
NASA National Aeronautics and Space AdministrationNASCOM NASA Communications NetworkNASTRAN NASA Structural AnalysisNATL NationalNATF Naval Air Test FacilityNAVID Navigation AidNAVSAT Navigation SatelliteNB No Bias (Relay)
Navigation BaseNitrogen BaseNiobium
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NBS National Bureau of Standards
NC Numerical ControlNational CoarseNo ChangeNo Comment
- NCC NASA Class CodeNCGS Nuclear Criteria Group Secretary
ND NASA DocumentNeodymium
NDE Non-Destructive Evaluation
NDI Non-Destructive Inspectioni
NOT Non-Destructive Testing iNEC National Electrical CodeNEG Negative aNET NetworkNFPA National Fire Prevention AssociationN&G Navigation & Guidance (G&N is preferred)
NG Narrow GageNH3 Ammonia r:-NH4 Hydrazine-
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NHA Next Higher Assembly
NHB NASA Handbook
NI NickelNI-SIL Nickel-Silver )
NIB Non-Interference Basis !
NIC Not In Contract
NIP Nipple
NJP Network Job Processing
NL No LimitNLG Nose Landing Gear
f ' NM Nautical MileNonmetallic
' NMAB National Materials Advisory Board
NMI NASA Management Instruction
NMO Normal Manual Operation
NMR Nuclear Magnetic Resonance' nNOC Network Operation Control
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Notation of ContentNOES National Operational Environmental Satellite Services
NOR NormalV.
NORAD North American Air Defense CommandNOZ NozzleNP NeptuniumNPC NASA Publication ControlNPD NASA Policy DirectiveNPL Normal Power Level (See RPL)NPS NASA Planning StudiesFNPSH Net Positive Suction Head
NPSP Net Positive Suction PressureNet Positive Static Pressure
NPV Nitrogen Pressure Valve
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NR Not RequiredNumber
NRC Non-Recurring Costs FNRI Non-Recurring InvestmentNRM Non-Recurring MaintenanceNRP Normal Rated Power
- NRS Nonconformance Reporting SystemNRT Near Real TimeNRTS Not Repairable at This StationNRZ Non-Return-To-ZeroNS Nuclear Shuttle
Nickel SteelNSA National Standards AssociationNSI-I NASA Standard Initiator —Type I
tNSN National Stock NumberNSO NASA Support OperationNSP NASA Support PlanNSR National Slow RateNSTL National Space Technology LaboratoryNTO Nitrogen TetroxideNTP Normal Temperature & Pressure
Notice To ProceedNetwork Test Panel
NTS Not To ScaleNTSO NASA Test Support OfficeNUTIS Numerical and TextualNVR Nonvolatile Residue
No Voltage ReleaseNW NASA WaiverNWS Nose Wheel SteeringNWSI New World Services, Inc.tIIWT Nonwatertight
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02 Gaseous Oxygen0/D On Dock !O/ET Orbiter/External Tank
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O/F Oxidizer-To- Fuel Ratio'O/L-RC Overload-Reverse CurrentO/R Outside Radius s
O/V OvervoltageOA Orbital Assembly
' Output AxisOffice of Applications
OAA Orbiter Access ArmOAFTO Orbiter Atmospheric Flight Test Office
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OAS Orbiter Aeroflight SimulatorOrbiter Avionics System
OASPL Overall Sound Pressure LevelOAST Office of Aeronautics and Space TechnologyOAT Overall Test
Operational Acceptance TestOB On Board
Operational BaseOBCO On Board Checkout (Instrumentation)OBCS On Board Checkout SubsystemOBV Oxidizer Bleed Valve0&C Operations & Checkout (CSuilding)
OC On-ConditionOn Center aOpen CircuitOvercurrent
OCC Office of Contract Committ?eOperations Control Center
OCDR Orbiter Critical Design Review ^?OCDV Optics Coupling Data Unit (G&N)OCF Orbiter Computational Facilities
Onboard Computational FacilityOCN Order Control Number 1OCO Open-Close-OpenOCP Output Control PulseOCR Optical Character RecognitionOCS Onboard Checkout System
OCT OctalOD Outside Diameter
Operations DirectiveODB Operational Data Book
ODCDR Orbiter Delta CDRODES Optical Discrimination Evaluation StudyODIN Orbital Design Integration SystemODRAN Operational Drawing Revision Advance NoticeODU Output Display UnitOEAS Orbital Emergency Arresting System 0
OFCO Outboard Engine CutoffOEM Original Equipment Manufacturer
OESS Orbiter/ET Separation SubsystemO&FS Operations & Flight SupportOF Oxygen Fill r"
Outside FaceOFCC Office of Federal Contract ComplianceOFDS- Orbiter Flight Dynamics Simulator'
Oxygen Fluid Distribution SystemOFI Operational Flight Instrumentation
I OFK Offi ci al Flight KitOFP Orbiter Flight ProgramOFT Orbital Flight Test
OG Outer Gimbal (Roll)Oxygen Gage
OGA Outer Gimbal Angle
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Orbiter Instrumentation- OIA Orbiter Interface Adaptor
OIS Operational Intercommunication SystemOISR Open Item Status ReportOIT Orbiter Integrated TestOJT On the Job TrainingOL Open LoopOLDB On-Line Data BankOLF Orbiter Landing FacilityOLIF Orbiter Landing Instrumentation FacilitiesOLOW Orbiter Lift-Off WeightOLSA Orbiter/LPS Signal AdapterOLSP Orbiter Logistics Support Plan0&M Operation & Maintenance rOM Outer Marker (ILS)
Optical MasterOMB Office of Management and BudgetOMCF Operations & Maintenance Control FileOMD Operations & Maintenance DocumentationOMDR Operations & Maintenance Data Record
` OME Orbital Maneuvering EngineOMI Operations & Maintenance InstructionOML Outside Mold Line
Orbiter Mold LineOMMH Orbiter Maintianance Man-HoursOMNI Omni-Range
Omni directionalOMP Operations & Maintenance PlanOMPR Operational Maintainability Problem Reporting
OMPT Observed 'Mass Point TrajectoryOMR Orbiter Management Review
OperationsRequirementseratio s & MaintenanceP nOMRB Operating Material Review Board i
OMRP Operations & Maintenance Requirements PlanOMRS Operations & Maintenance Requirements SpecificationsOMS Orbital Maneuvering SubsystemOMU Optical Measuring Unitofiv Oxygen Manual Valve
- OND Operator Need DateOOD Orbiter On Dock_
OOMM Organizational Operations & Maintenance Manual
OOS Orbit-to-Orbit Shuttle-Orbit-to-Orbit Stage
OP Oxygen Purge
OPS Oxidizer PreburnerOPBOV Oxidizer Preburner Oxidizer Valve
OPE Other Project Element
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Operations Planning ReviewOPS Orbiter Project ScheduleOPT Optics
Optimum0&R Overhaul & RepairOR Outside Radius
Oxygen ReliefORB OrbiterORCHIS Oak Ridge Computerized Hierarchical Information SystemsORD Ordnance
Operational Ready DataOperational Readiness Date
ORF OrificeORI Operational Readiness InspectionORLA Optimum Repair Level AnalysisORR Operations Requirements ReviewORSDI Oak Ridge Selective Dissemination of InformationOS Orbiter CEI Specification
Operating SystemOSC OscillatorOSDH Orbiter System Definition HandbookOSE Operating Support EquipmentOSF Office of Space Flight (NASA HQ)
Ordnance Storage FacilityOSHA Occupational Safety and Health ActOSO Ocean Systems OperationOSOP Orbiter Systems Operating ProceduresOSS Optics Subsystems
Orbiting Space StationOrbit-to-Orbit Stage
OSSRH Orbiter Subsystem Requirements HandbookDST Orbiter Support Trolleyc?`^OSTP Orbiting System Test PlanOT Operating Time
i;Operational Trajectory
` OvertimeOTB Orbiting Tanker BaseOTC Orbiter Test ConductorO;D Operational Technical Documentation
OTDA Office of Trackin and Data Acquisition
0TH Over-The-Horizon ?Radar)OTL Ordnance Test Laboratory
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Oxygen Vent aOVBD OverboardOVF OverfillU.'FL OverflowOVHD OverheadOVHT Overheat'OVLD OverloadOVRD OverrideOVV OvervoltageOWF Optimum Working FrequencyOXD Oxide ;<OXiD Oxidizer,OXY OxygenOZ Ounce
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Power AmplifierPulse Amplifier
PAC Problem Action Center
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Problem Assessment EngineeringPAF Peak Annual FundingPAFB Patrick Air Force BasePAH Payload Accommodations HandbookPALS Precision Approach Landing SystemPAM Pulse Amplitude ModulationPAO Public Affairs OfficePAR Precision Approa0 Radar
Problem Accountability RacersProblem Action RecordProblem Action Request
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Product Acceptance Review jPARA ParagraphPARS Property Accountability Record SystemPASS Planning and Scheduling SystemPAT Problem Action TeamPATS Program for Analysis of Time SeriesPAV Pressure Actuated ValvePAX PassengerPB Playback
Phonetically BalancedPBAN Polybutadiene Acrylonitrile (Propellant)PBD Payload Bay DoorPBOM Payload Bay Door Mechanism
PBIC Programmable Buffer Interface CardPBK Payload Bay KitPBM Program Business ManagementPBPS Post-Boost Propulsion SystemsPBW Proportional Band WidthPC Pulsating CurrentPCA Pneumatic Control Assembly
Power Control AssemblyPoint of Closest Approach
PCB Printed Circuit BoardPower Circuit Breaker
FCC Pad Control Center aPCCB Program Configuration Control Board
PCCM Program Change Control Management
PCCP Preliminary Contract Change Proposal
PCI Program Controlled Input'PCIL Pilot-Controlled Instrument Landing
PCIN Program Change Identificaticn Number
PCL Primary Coolant Line
PCM Pulse Code ModulationPunch Card Machine
PCN Program Control Number
PCO Post-CheckoutProcurring Contracting OfficerProgram Controlled Output
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PCR Publication Change RequestPayload Changeout Room
PCs Power Conversion SystemPermanent Change of Station
PCTE Portable Commercial Test EquipmentPCU Power Control Unit a
- Pressure Control UnitProcess Control Unit
PCV Pre-Check VerificationPurge Control Valve
PCVB Pyro Continuity Verification BoxPCVL Pilot Controlled Visual LandingPD Program Directive
Preliminary DesignProject Directive
PD&RS Payload Deployment & Retrieval SubsystemPDAR Program Description and RequirementsPDARS Program Description and Requirements BaselinePBD Performance Data Book
Power Distribution BoxPDC Procurement Document Change .^ qy•^'PDCS Power Distribution and Control SubsystemPDI Payload Data InterleaverPDL Program Design LanguagePDM Pulse Duration Modulation
Processor Data MonitorPDM/FM Pulse Duration Modulation/Frequency ModulationPDP Program Development Plan
Preliminary Definition PlanProcurement Data PackageProject Definition Phase
POR Preliminary Design ReviewProcessed Data RecorderPreliminary Data Requirements
PDRO Procurement Data Requirements DocumentPDRLrocure nt Data Requirements me List.,uPDRM Payload Deployment & Retrieval MechanismPOS Power Distribution Subsystem
' Package Data System 1Partitioned Data Set
PDU Pressure Distribution UnitPulse Detection Unit
PE Project EngineerPEFO Payload Effects Follow-on StudyPEIR Project Equipment Inspection Record
' PEM Plaf% Engineering and Maintenance 3PER Preliminary Engineering Report jPERT Program Evaluation Review Technique "aPETA Performance Evaluation & Trend AnalysisPETN Petaerythrite Tetranitrate
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PF Probability of FailureParachute FacilityPowered FlightPower FactorPreflightPulse FrequencyPrime Function
PFB Pressure Fed BoosterPFC
Preliminary Flight CertificationPerformance Flight Certification
PFL Primary Freon LoopPFM Pulse Frequency ModulationPFP Program Financial Plan
Programmable Function PanelPERT Preliminary Flight Rating TestPG Pressure GagePGA
Pressure Garment AssemblyPower Generating Assembly
PGE PurgePGNrS Primary G&N and Control System
_ PG5 Power Generation SubsystemPH Hydrogen Ion Concentration
Phase 3
PHF Personal Hygiene facilityP&I Performance & Interface (Specification)PI Procurement Item
Preliminary InvestigationProgram Introduction
PIA Pre-Installation AcceptancePIB Pyrotechnic Installation BuildingPIC Pyro Initiator Controller
Pyro Initiator CapacitorsProgrammable Interval Clock
PICP Program Interface Control PlanPICRS Program Information Coordination & Review Service
Program Information Control & Retrieval SystemPIDA Payload Installation-& Deployment AidPIDS Portable Image Display System iPIF Payload Integration FacilityPIGA Pendulous Integrating Gyro AccelerometerPIM Pulse Interval Modulation
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PIND Particle Impact Nose Detection' lPIO Pilot-Induced Oscillation
Public information OfficePIP Plant Instrumentation Program
Production Instrumentation PackagePayload Interface Plan
PIPA Pulse Integrating Pendulum Accelerometers 3
Pulse Integrating Pendulum AssemblyPIRN Preliminary Interface Revision Notice
PIT Pre-Installation TestPK Peak
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PLACE Position Location Aircraft Communications EquipmentPLBK PlaybackPLH Payload HandlingPLL Phase Locked LoopPLM Payload Management
Payload MonitoringPLMS Program Logistics Master SchedulePLN Program Logic NetworkPLS Post Landing & Safing wPLSL Propellants & Life Support LaboratoryPLSS Portable Life Support SubsystemPM Performance Monitor
Pulse ModulationPhase ModulationPlanetary MissionProgram Milestone
PMAT Page Map Address TablePMC Payload Monitoring & Control
Piutonia-Molybdenum CermetProcurement Method Code
PMDL Palmdale, CaliforniaPMF Performance Monitor FunctionPMHL Preferred Measurement Hardware ListPMI Preventive Maintenance Inspection
Principal Maintenance InspectorPMN Program Management NetworkPMOM Performance Management Operating ManualPMO'N Performance Management Operations NetworkPMP Program Management Plan
Pre-Modulation Processor 1PMR Program Manager's Review
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PMS Performance Management SystemPerformance Monitoring System
PMT Production Monitoring Test iPMU Pressure. Measuring UnitPN Part NumberPNEU Pneumatic ;.PNL PanelPO Purchase OrderPOA Plan Of ActionPOC Purchase Order CloseoutPOCC Payload Operations Control CenterPOCN Purchase Order Change Notice -POL Petroleum Oil LubricantsPOLAR Production Order Location and Reporting'
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POM Printer Output MicrofilmPOP Program Operating Plan
Prelaunch Operations Plan
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Pacific Ocean ShipPOST Program to Optimize Simulated TrajectoriesPOT PotentiometerPOV Peak Operating Voltage
Pneumatic Operated ValuePP Peak-to-Peak
Partial PressurePush-Pu11Planning Package
PPB Parts Per BillionProgram Performance Baseline
PPF Payload Processing Facility (USAF)PPL Prices Parts List
Provisioning Parts ListPPM Parts Per Million
Pulse Position Modulation
Pulses Per MinutePPME Pacific Plate Motion ExperimentPPS Pulses Per Second
Pneumatic Power SubsystemProvisioning Performance Schedule
P&R Performance and ResourcesPR Purchase Request
Procurement RegulationsPressure RegulatorPerformance Report
PRACA Problem Reporting and Corrective Action
PRB Panel Review BoardParachute Refurbishment Building
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PRCB Program Requirements Control BoardPRCBD Program Requirements Control Board Directive {PRO Procurement Requirements Document
Procurement Regulation DirectiveProgram Requirements Document (UDS)
PRESS PressurePRF Pulse Repetition Frequency y
' PRi PrimaryPRL Page Revision LogPRM Payload Retention MechanismPRN Program Release Notice a
Pseudo-Random Noise
PROC Procurement_ PROG Program
PROJ ProjectPROM Programmable Read-Only Memory
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PRR Program Requirements ReviewPreliminary Requirements ReviewParts Replacement RequestPulse Repetition Rate
PRS Power Reactant SubsystemPayload Retention SubsystemPersonnel Rescue ServicePrimary Recovery SiteProvisioning Requirements Statement
PRSD Power Reactant Storage and DistributionPower Reactant Supply and Distribution
PRSS Problem Report Squawk Sheet
PS Payload SupportPressure SwitchParachute SubsystemPower Supply
PSA Power Servo AssemblyPower Servo AmplifierPressure Switch Assembly
PSAC Presidential Scientific Advisory CommitteePSC Program Schedule ChartPSCN Preliminary Specification Change NoticePSD Power Spectral DensityPSDR Planning and Scheduling Document RecordPSI Pounds Per Square Inch (Static Pressure)'PSIA Pounds Per Square Inch (Absolute Pressure)PSID Pounds Per Square Inch (Differential Pressure)PSIG Pounds Per Square Inch (Gage Pressure)PSIS Pounds Per Square Inch (Sealed)PSK Phase Shift KeyedPSL Pressure Seal
Programming Support LibraryP&SM Procurement & Subcontract ManagementPSM Propellant Storage Module
Pyro Substitute MonitorPSP Program Support PlanPSPL Priced Spare Parts ListPSRD Program Support Requirements Document: .PSS Payload Specialist Station
Propulsion Support SystemPropellant Supply SubsystemPad Safety Supervisor
PSV Planetary Space VehiclePT Pint
PointPressure Transducer
PTA Propulsion Test ArticlePost-Test Analysis
PTC Passive Thermal ControlPortable Temperature Controller
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PTCR Pad Terminal Connection RoomPTCS Propellant Tanking Computer SystemPTD Provisioning Technical DocumentationPTI Total PressurePTM Pulse Time ModulationPTP Point-To-Point PhonesPTR Program Trouble Report
PrinterPTT Push-To-TalkPU Propellant Utilization
Power UnitPickup
PUB PublicationY
PUGS Propellant Utilization & Gaugina System
PUV Propellant Utilization ValvePV&D Purge, Vent and DrainPVA Preburner Valve Actuator -^PVR Precision Voltage ReferencePVRD Purge, Vent, Repressurize, and DrainPVT Pressure/Volume/Temperature
Pyrotechnic Verification TestPVWA Planned Value of Work Accomplished
.- PVWS Planned Value of Work ScheduledPW Pulse WidthPWA Product Work Authorization
Private Write AreaPWB Printed Wire Board
PWSS Program Work Breakdown StructurePWM Pulse-Width ModulationPWR PowerPY Program YearPYRO Pyrotechnics
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QA Quality AssuranceQAM Quality Assurance ManualQAP Quality Assurance ProcedureQC Quality ControlQCDR Quality Control Deficiency ReportQCOP Quality Control Operating ProcedureQD Quick DisconnectQDS Quality Data SystemQE Quality EngineerQEC Quick Engine ChangeQGS Quantity Gauging SystemQLDS Quick Look Data StationQPL Qualified Parts List
Qualified Products ListQPRD Quality Planning Requirements DocumentQPS Quality Planning SpecificationQRE Quick-Reaction EstimateQRI Quick-Reaction IntegrationQRIA Quick-Reaction Integration ActivityQRS Quick-Reaction SortieQRSL Quick-Reaction Space LaboratoryQSA Qualification Site ApprovalQSL Qualified Source List
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QSS Quindar Scanning SystemQT Qualification TestQTP Qualification Test Plan x
QTR Qualification Test ReportQTY QuantityQUAD Quadrant
QuadrangleQuadrature
QUADS Quality Achievement Data SystemQUAL Qualified
Qualification^ 3QUI Quito, Ecuador (STDN)
QUIC Quality Data Information and Control -tQVT Qualified Verification Testing
QVVT Qualified Verification Vibration Testing r
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R-T Resistance TestR/A Radar AltimeterR/I Receiving Inspection {R/L Remote/LocalR/T Receiver/TransmitterR/W RunwayRAC Reliability Action CenterRACS Remote Automatic Calibration System "sRAD Radiation Dosage
RadiusRadianRapid Access Datafile
RADAR Radio Detection And RangingRAF Requirements Analysis FormRAG Reusable AgenaRAI Roll Attitude IndicatorRAL Responsibility Assignment List =RALT Radar Altimeter 1RALPH Reduction & Acquisition of Lunar Pulse HeightsRAM Responsibility Assignment Matrix f
Random Access MemoryRadar Absorbtion Material
RAMA Recap and Movement AuthorizationRANC Radar Absorbtion Noise 5 ClutterRANN Research Applied to National NeedsRAPCON Radar Approach and ControlRAS Requirements Allocation Sheet
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Regional Acquisition Unit k`'RAX Remote Access Computing System
Remote Access TerminalRBC Rotating Beam CeliometerRMBT Retrospective Bibliographies on Magnetic TapeRBN Radio BeaconRC Resistance-Capacitance
Range CommandRotation Control
RCC Reinforced Carbon-Carbon3
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RCPT Receptacle i
RCN Reauirements Change NoticeRCS Reaction Control SubsystemRCSC Reaction Control Subsystem ControllerRCV Receive
- RCVR ReceiverRCVY RecoveryR&D Research and DevelopmentR&DO Research and Development Operations (MSFC)RD Requirements Document
Reference DesignatorRDA Resident Data AreaRDC Request for Document Change
r RDD Requirements Definition DocumentRDF Radio Direction FinderRDP Requirements Development PlanROR Raw Data RecorderRDS Rocketdyne Digital Simulator 1RDX CyclotrimethylenetrinitramineRDT&E Research, Development, Test and EvaluationRE Responsible EngineerRE&T Research Engineering_ & Test
REC RecordRECP Request for Engineering Change ProposalRECS Representative Shuttle Environmental Control SystemRECT RectifierRECV ReceiverREF Reference
RefurbishmentREG Regulator (Regulate)REIL Runway End Identification Lights 1REI-M REI-Mollite
REJ Reject 1REL Release 3REM RemoveREPL ReplaceRPS Record and Playback Subsystem tREQ Request
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REQMT Requirement X
RESVR Resevoir -,RUT Research Engineering & Test
NETS Reconfigurable Electrical Test Stand
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RFA Request For ActionRF Authorization (Frequency)
RFB Request For Bid
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Request For InformationRemote Facility InquiryRemote File Inquiry
RFP Request For ProposalRFPA Request For Proposal AuthorizationRFQ Request For QuotationRGA Rate Gyro Assembly lRGP Rate Gyro PackageRH Relative Humidity
Right HandRHC Rotation Hand ControllerRHCP Right Hand Circular PolarizationRHEB Right Hand Equipment Bay
.%RHL Residual Hazards ListRHS Rocketdyne Hybrid SimulatorRHT Radiant Heat TemperatureRHU Radioisotope Heater UnitRI Rockwell InternationalRIB Recoverable Item BreakdownRIC Rockwell International Corporation
Resistance Inductance and CapacitanceRID Review Item DispositionRIF Relative Importance FactorRIG Rate Integrating GyroRIL Recoverable Item ListRIR Reportable Item ReportRIS Reporting Identification Symbols j
RISKAC Risk AcceptanceRIU Remote Interface UnitRJC Reaction Jet ControlRJD Reaction Jet DeviceRJDA Reaction Jet Driver-Aft fiRJDF Reaction Jet Driver-FwdRJ/EC Reaction Jet/Engine ControlRJOD Reaction Jet OMS DriverRLEO Request Liaison Engineering Order'xRM Rescue Module'
Reference MissionRMS Remote Manipulator Subsystem
Root Mean SquareRadian Means Per Second
` ROC Record Of CommentsRequest Of Change
ROM Rough Order of MagnitudeRead-Only Memory
ROT Remaining Operating Time jR&P Reserve and Process
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^ Rocket Propellant1 Relative Pressure^ RPA Request for Procurement Action' RPC Remote Power Controller
KyE Reliability Project Engineer !RPl[ Real Property Installed Equipment
^KPL Rated Power Level .RPM Revolutions Per Minute \KPP Reinforced Pyrn yt c Plastic
^ RP5 Revolutions Per Second^ RPTA Rudder Pedal Transducer Assembly
KPV Remotely Controlled VehicleK Reliability & Quality AssuranceK MTS Requirements
^ 8^R Remove& Replace^ RR Requirements Review
Rendezvous RadarRRL Rudder Reference LineRoP Rudder Reference PlaneKKT Rendezvous Radar TransponderK5 Kawinsonde
' Refurbishment SpareRight Side
KSD Requirements & Specifications DocumentR3F Refurbish & Subassembly FacilitiesRSI Reusable Surface InsulatorRsPL Recommended Spare Parts List CRS3 Root Sum Square
Reactant, Supply SystemR5SPO Resident Spare Shuttle Projects OfficeRSu Remote Service UnitaT Reference TrajectoryRTAC Research G Technology Advisory Committee
! RT8 Resistance Temperature Bulb^ RTC Real-Time Commandi` RTCC Real-Time Computation Center (NASA)^ Real-Time Computer Command (Uplink)^ RTCE Rotation/Translation Control Electronics
RTCP Veal-Time Communications Processor ` |. RTCS Real-Time Computer System{ RTD Resistance Temperature Device
RTE Responsible Test EngineerRTG Radioisotope Thermal Generators/' RTHC Rotation-Translation Hand ControllerKTHS Real-Time Hybrid SystemRTLS Return to Launch Site .RTS Remote Tracking StationRTV Room-Temperature Vulcanized ^^RVPT Interrupt
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RVCF Remote Vehicle Checkout FacilityRVDT Rotary Variable Differential Transducer
Rotary Variable Differential Transformerr
RVN Requirements Verification NetworkRVR Runway Visual Range 1RVS ReverseRYD Real-Year DollarsRX ReceiveRZ Return-to-Zero t
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S SecondSideStern_
S* Second (Astronomical Tables)S-BD S-BandS-N Stress NumberS/A Site Activation
Safe and ArmSubassemblySpacecraft Adapter
S/AC Stabilization/Attitude ControlS/C Spacecraft i
Software ContractorSubcontractor
S/F Safety Factor}S/G Strain Gage
S/L Sortie LabShops & Labs
S/M Service/MaintenanceS/N Serial Number'
Signal-to-Noise Ratiof
S/0 ShutoffSwitchover
S/P Signal ProcessorSerial to Parallel
S/R Send and ReceiveS/S Samples-Per-Second
Single Sideband
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Shaft Angle_ Subaccount
SA-ALC San Antonio Air Logistics CenterSAAC Schedule Allocation and ControlSAB Storage and Assembly BuildingSAC Strategtic Air Command (USAF)SAD Shuttle Authorized Document
System Allocation DocumentSAE Society of Automotive EngineersSAEF Spacecraft Assembly & Encapsulation FacilitySAFE San Andreas Fault ExperimentSAGE Stratospheric Aerosol Gas ExperimentSAIL Shuttle Avionics Integration Laboratory, JSCSAL Shuttle Avionics LaboratorySAM Shuttle Attachment ManipulatorSAMS Shuttle Attachment Manipulator SystemSAMSO Space and Missile Systems Organization (USAF)SAMTEC Space and Missile Test Center (VAFB, CA)SAND Site Activation Need DateSAP Strain Arrestor PlateSAR Safety Analysis ReportSARP Safety Analysis Report for PackagingSAS Stability Augmentation SubsystemSAT SaturatedSATS Shuttle Avionics Test System
Small Applications Technology SatelliteSAU Strap Around UnitSB Space Base
Synchronization BaseSBA Structure Borne Acoustic
Small Business AdministrationSBCR Stock Balance and Consumption ReportSBD Schematic Block DiagramSBHC Speed Brake Hand ControlSC Signal Conditioner
Service ChargeScaleStatement Capability
SCA Shuttle Carrier AircraftSchedule Change AuthorizationSneak Circuit Analysis
SCAN Selected Current Aerospace NoticeSCAPE Self-Contained Atmospheric Protective EnsembleSCARS Serialized -Control and Record SystemSCB Software Control Board
Schedule Change BoardSpecification Control Board
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SCCM Standard Cubic Centimeters per MinuteSCCS Standard Cubic Centimeters per Second r`SCD Specification Control Document
Source Control DrawingSpecification Control Drawing a
SCDA Safing, Cool Down and Decontamination AreaSCDP Simulation Control Data PackageSCDR Shuttle Critical Design Review
j
Seller Critical Design ReviewSubcontractor Critical Design Review
SCE Signal Conditioning EquipmentSCF Satellite Control Facility
Sequenced Compatibility FiringStandard Cubic Fef:t
SCFH Standard Cubic Feet per HourSCFM Standard Cubic Feet per MinuteSCFS Standard Cubic Feet per SecondSCHEM SchematicsSCIM Standard Cubic Inches per MinuteSCIS Standard Cubic Inches per Second
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SCIT Standard Change Integration and TrackingSCL Secondary Coolant Line J
Specification Change LogSCM Subsystem Configuration ManagementSCMP System Contractor Management PlanSCN Specification Change NoticeSCO Subcarrier Oscillator
Start Checkout a
SCP Specific Candle Power 1I
SCR Sneak Circuit ReportSoftware Change RequestSchedule Change Request
SCS Stabilization and Control SubsystemSCT Scanning TelescopeSCU Secondary Control Unit
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SD Space Division (Rockwell)Specification Document
SDA Source Data AutomationSDC Spares Disposition Code
Software Development ComputerSOCS Sail Date Communications SystemSOD Softwara Description Document
Shuttle Design DirectiveSoftware Design Document
SDE Space Division EvaluatorSDF System Development Facility (Breadboard)
Single Degree of FreedomSDH Software, Development HandbookSOL Software Development Laboratory
Standard Distribution .ListSDM System Definition Manual tiSON Software Development Note
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SDR Software Design RequirementSystem Design Review
SDRB Software Design Review BoardSDS Shuttle Dynamic Simulation
Software Design SpecificationSDSS Space Division Shuttle SimulatorSOT Structural Dynamic TestSDTA Structural Dynamic Test ArticleSE Support Equipment
System ElementSEA Scanning Electrostatic Analysis
Silicon Elastimeter AblatorSEACF Support Equipment Assembly and Checkout FacilitySEAID Support Equipment Abbreviated Items DescriptionSEB Source Evaluation BoardSEC Secondary
SecondSequential Events ControllerSource Evaluation Committee
SECS Shuttle Events Control SubsystemSE/FAC Support Equipment/FacilitySE&I Systems Engineering and Integration aSEI Support Equipment 'InstallationSEICO Support Equipment Installati.^n and Checkout 4SEM Seller's Engineering Memo
Space Environmental MonitoringSystem Engineering ManagementSystem Exception Manage
SEMS Space Environment Ml.nitor SystemSEND Shared Equipment Nt-VI DateSEO Special Engineering OrderSEOS Synchronous Earth Observation SatelliteSEP SeparationSEPAP Shuttle Electrical Power Analysis ReportSEQ SequenceSER SerialSERB Systems Engineering Review Board
Shuttle Engineering Review BoardSERS Shuttle Equipment Record SystemSES Shuttle Engineering Simulation 4
Special Emphasis StudySESL Space Environmental Simulation LaboratorySF Static Firing 3
Subcontractor FurnishedSquare Feet
SFC Specific Fuel ConsumptionSFCS Survival Flight Control SystemSFL Secondary Freon LoopSFP Single Failure PointSFPA Single Failure Point AnalysisSFPPL Short Form Provisioning Parts ListSFPS Single Failure Point Summary
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SFT Static Firing Test uSimulated Flight Test
SFTA Structural Fatigue Test ArticleSFTF Static Firing Test Fac'',Iity
SFU SMSI Firing UnitSGLS Space Ground Link Station
- SGOS Shuttle Ground Operations SimulatorSH2 Supercritical HydrogenS114A Sidereal Hour AngleSHAG Simplified High Accuracy GuidanceSHERB Sandia Human Error Rate BankSHF Super High FrequencySHLB Simulation Hardware Load BoxesSHF Shaft HorsepowerSI International System of UnitsSIA Software Impact AssessmentSID System Interface DocumentSIL Systems Integration Laboratory
Sound Interference Level 3Silver
4s * /SIM SimulationScientific Instrumentation Module
SIMAS Shuttle Information Management Accountability System jSIMS Shuttle Inventory Management SystemSIN SINESID Systems Integration OfficeSIR Systems Integration ReviewSIS Software Implementation Specifications
Systems Integration ScheduleSoftware Integrated Schedule
SIT Shuttle Integrated TestSoftware Integrated Test
SIVE Shuttle Interface Verification Equipment
SL Sea LevelSpace LabSound Level
SLAC Stanford Linear Accelerator CenterSLAM Side Load Arrest MechanismSLAR Side Looking Airborne RadarSW System Load and InitializationSLS Secondary Landing Site
Statement Level Simulator
SM Support ModuleStable Member
SMAB Solid Motor Assembly BuildingSMC Scientific Manpower Commission
SMCC Shuttle Mission Control CenterSMD Special Measuring DeviceSMES Shuttle Mission Evaluation Simulation
Shuttle Mission Engineering SimulatorSuperconducting Magnetic Energy Storage
SMM Subsystem Measurement ManagementSMMD Specimen Mass Measurement Device
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SM/PM System Management/Performance MonitorSMPM Structural Materials Property ManualSMR Source, Maintenance and Repair (Code)SMRD Spin Motor Run DiscreteSMS Shuttle Mission Simulator }
Separation Mechanism SubsystemSMSI Standard Manned Space Flight Initiator (See NSI-I)SMVP Shuttle Master Verification PlanSMVRD Shuttle Master Verification Requirements DocumentSNF System Noise FigureSNSO Space Nuclear Systems OfficeSOAR Shuttle Orbital Applications and RequirementsSOARS Shuttle Operations Automated Reporting SystemSOATS Support Operations Automated Training SystemSOC System Option ControllerSOCC Satellite Operations Control CenterSODB Shuttle Operational Data BookSOF Safety Of FlightSOFT Spray-On Foam InsulationSOFT Space Operations and Flight TechniquesSOM Standard Operating Manual
Spares Optimization Model(NASA) Ship Operations Manager
SOP Standard Operating ProcedureSubsystem Operating ProcedureSystems Operation PlanSecondary Oxygen Pack
SOR Specification Operational Requirement'SOT Strap-On TankSOV Shutoff Valve
Solenoid Operated ValveSOW Statement Of Work
Subdivision Of WorkSOX Supercritical OxygenSP Shuttle Projects Office (KSC)
Single PoleStandard or Peculiar
SP-AF Air Force STS Liaison Office (KSC Shuttle)SPA Shared Peripheral Area
Signal Processor AssemblySpace Processing Application ...,
SPART Space Research and Technology-SPC, Shipping and Packing Cost
Starting Point CodeSPE Static Phase ErrorSPEC SpecificationSPECT SpectrometerSP-FGS Flight & Ground Systems Office, KSC Shuttle(Was SP-GSP)SPF Spacelab Processing FacilitySPFA Single Point Failure AnalysisSPFP Single .Point Failure PotentialSPG Single Point GroundSP-ILS Integrated Log`ttics Support (KSC Shuttle)
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SPI Surface Position Indicator
SPICE Spacelab Payload Integration & Coordination In Europe rSPII Shuttle Program implementation Instruction
SPIMS Shuttle Program Information Management System
SPL Sound Pressure LevelSystem Programming Language
SP-MPC Management Planning and Control Office (KSC Shuttle)SPM Subsystem Project ManagerSP-OPN Operations Planning Office (KSC Shuttle)SPO Spare Parts OrderSP-PAY Payload integration Office (KSC Shuttle)SPPIL Shuttle Preferred Pyrotechnic Items ListSPPL Spare Parts Provisioning ListSPR Software Problem Report 9
Subcontractor Performance Review fSPRAG STS Payload Requirements & Analysis GroupSPS Samples Per Second j
Shuttle Procedures SimulatorService Propulsion Subsystem
SPTO Supplementary Provisioning Technical Documentation .^SQ FT Square FeetSR Support Request
Status ReviewStatus ReportStatus RegisterStandard RerairShift Register
SRA Support Requirements AnalysisSpin Reference Axis
SRB Solid Rocket BoosterSRBAB SRB Assembly BuildingSRBDF SRB Disassembly FacilitySRCB Software Requirements Change BoardSRBD Software Requirements Change Board DirectiveSRD Shuttle Requirements Document
Shuttle Requirements DefinitionSystems Requirements Document
SRDH Subsystems Requirements Definition Handbook
SRF Shuttle Refurbish Facility {SRH Subsystems Requirements Handbook
-SRM Solid Rocket Motor +Specification Requirements Manual``Standard Reference Material
SRN Software. Release Notice
SR&Q - Safety, Reliability and Quality
SR&QA Safety, Reliability and Quality AssuranceSRR System Requirements Review
c ito Readiness Review
SRS Software Requirements SpecificationSpecification Revision Sheet
' Support Requirement System
SFSR Schedule and Resources Status Report
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SRT Supporting Research and TechnologySpecification Requirements Table
SRU Shop-Replaceable Unit
Shop Replacement UnitSS Space Shuttle
Station SetSpace Station s
SubsystemSS&A Space Systems and ApplicationsSSA Shuttle Simulation AircraftSSAT Shuttle Service and Access TowerSSB Single Sideband
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Source Selection BoardSSBC Summary Sheet Bar Chart aSSC Subsystem Sequence Controller
Shuttle System ContractorSolid-Solution Cement
SSCA Surface Sampler Control AssemblySSCHS Space Shuttle Cargo Handling System r'SSCL Shuttle System Commonality ListSSDH Subsystem Data HandbookSSE Subsystem Element
Subsystem Support EquipmentSSFGSS Space Shuttle Flight & Ground System SpecificationSSFL Santa Susana Field LaboratorySSHB Station Set HandbookSSI Significant Structural ItemSSIBD Shuttle System Interface Block DiagramSSITP Shuttle System Integrated Test PlanSSM Subsystem ManagerSSME Space Shuttle Main EngineSSMECA- SSME Controller AssemblySSP Space Shuttle Program
Small Sortie PayloadSSPD Shuttle System Payload Data
Shuttle System Payload Definition StudySSPM Space Shuttle Program ManagerSSPO Space Shuttle Program Office 1
SSPPSG Space Shuttle Payload Planning Steering GroupSSPRO Space Shuttle Program Resident OfficeSSPS Space Shuttle Program Schedule ^,. = -
SSPTF Santa Susana Propulsion Test Facility (See SSFL)SSR Station Set Requirement
Shop Support RequestSSRD Station Set Requirements DocumentSSRN System Software Reference NumberSSRR Station Set Requirements Review
SSS Stage Separation SubsystemSSSS Space Shuttle System SpecificationSST Structural Static TestSSTC Space Shuttle Test ConductorSSUS Spin Stabilized Upper StageSSV Space Shuttle Vehicle
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ST Sequential TimerStar TrackerStructL -r,"Special ijoling 3STA Shuttle Training AircraftStructural Test Article I
Static Test ArticleStation
STAB StabilizerSTADAC Station Data Acquisition and ControlSTAG Shuttle Turnaround Analysis GroupSTAR Shuttle Turnaround Analysis Report
Scientific and Technical ReportSTARR Schedule, Technical and Resources ReportSTC Systems Test Complex
Standard Test ConfigurationSTD Standard iSTON Spaceflight Tracking and Data NetworkSTE Special Test Equipment
System Test EngineerSTF Structural Fatigue TestSTG StageSTIL Software Integration LaboratorySTLOS Star Line Of SightSTM Signal Termination ModuleSTN Software Trouble NoteSTP Shuttle Technology PanelSTPH Static Phase ErrorSTRG SteeringSTRL StructuralSTS Space Transportation SystemSTSR System Test Summary ReportSTU Special Test UnitSU Support UnitSUP SupplySURE Shuttle Users Review and EvaluationSV Space Vehicle
Safety Valve iSolenoid Valve
SVA&C Shuttle Vehicle Assembly and CheckoutSVAB Shuttle Vehicle Assembly Building'`'SVB Shuttle Vehicle BoosterSVc Supervisor CallSVGS Space Vehicle Dynamic SimulatorSW Short Wave
SoftwareSwitcher (Switch)Solar Wine ,.
5WA Support Work AuthorizationSWAD Subdivision of Work Authorization DocumentSWAT Stress Wave Analysis TechniqueSWOB Salaries, Wages, Overhead and BenefitsSWP Safe Working Pressure
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SXT SextantSYM Symbo l
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SYMM SymmetricalSYN SynchronousSynthetica
SYNC SynchronizeSYS SystemSYSTRAN Systems Analysis Translator
-T-
T Testy..,'
TimeT- Time Prior to LaunchT-0 TakeoffT/A Turnaround iT/C Termination CheckT/D Touchdown
Time DelayT/E Transporter ErectorT/L Talk and ListenT/R Transmit-Receive
Tape RecorderTransformer Rectifier
T/T Terminal TimingTiming/Telem--try
T/TCA Thrust/Translation Contrgl'AssemblyT/V Thermal/VacuumT/W Thrust-to-HeightTA Test Article
f Task AnalysisTrunion Angle Y
Travel Authorization''TAA Technical Assistance AgreementTAC Total Average CostTACAN Tactical Air NavigationTACO Test and Checkout OperationsTAEM Terminal Area Energy ManagementTAG Technical Air-to-GroundTAIR Test Assembly Inspection RecordTALAR Tactical Approach and Landing RadarTAM Thermal Analytical ModelTAP Telemetry Acceptance Pattern
Technical Achievement PlanTotal Air Pressure-
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Test Action RequirementTest Agency Report
1 Technical Analysis RequestTAS Telemetry Antenna Subsystem
True AirspeedTASPR Technical and Schedule Performance Report.TAT Total Air Temperature
_ 78 Talk BackTerminal Base
TB:A To Be AddedT8D To Be Det7rmined
To Be Developed.BE To Be EvaluatedTBN To Be NegotiatedTBP To Be ProvidedTBS Tank Breakdown Structure
To Be SpecifiedTo Be Supplied
T TelecommunicationsThermocoupleTest Conductor (Controller)Temperature CompensatingTraceability CodeTracking CameraThrust Chamber
TCA Thrust Chamber Acsembl
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iTranslation Controller AssemblyTask Control BlockThermal Control CoatingTest Completion DateTime Crd'° GeneratorTest Configuration IdentifierTrans portation Control and Movement DocumentTransportation Control NumberTest and Checkout PlanTest Checkout ProcedureThermal Concept ReviewTest and Checkout Requirements S pecification DocumentThermal Control SubsystemTest Control SupervisorTime Compliance Technical InstructionTime Compliance Technical Order'Tape Control UnitTechnical DirectiveTerminal distributorTask Description DocumentTine-Division MultiplexingTemperature and DewpointTechnical Design ReviewTechnical Documentation ReportTracking and Data Relay SatelliteTracking and Data Relay Satellite SystemT—+ Rota Cvc r m
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TCBTCCICD
TCCTC;DTCMDTCNTCOPTCPTCR"CRSDTCS
TCTiTCTOTCUTO
TOOTDMTOPTOR
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TE Test EquipmentTECH TechnicianTELCOM Telecommunications
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TEMP TemperatureTEP Technical Evaluation PanelTER Test Equipment Readiness
Time Estimating RelationshipTERL Test Equipment Readiness ListTF Test Facility
Test FixtureTFC Time From Cut;iffTFCS Triplex Flight Control SubsystemTFE Time From EventTFI Time From IgnitionTFL Time From LaunchTFS Telemetry Format SelectionTGA Thermal Gravimetric AnalysisTGS Telemetry Ground System
Telemetry Ground StationTGSE Telemetry Ground Support Equipment ,..TGT TargetTHC Translation Hand Controller gTI Technical Integration 1TIC Technical Information CenterTIFS Total Inflight SimulatorTII Tooling Inspection InstrumentationTL Lot Traceability
Thrust Level JTLM TelemetryTM Member Traceability
Technical ManagementTraffic Model
TMB Transportation Management BulletinTMC Test Monitoring ConsoleTMF Transporter Maintenance FacilityTMO Tool Manufacturing OrderTMP Terminal PanelTMPV Torquemotor Pilot ValveTMU Temperature Measurement Unit±li Technical NoteTO Technical OrderTOC Test Operations Center°
Test Operations ChangeTOL ToleranceTOT TotalTP Transition Period
Test. PointTPA Test Preparation AreaTPSC Thermal Protection and ControlTPE Test Project EngineerTPF Tug Processing Facility
Terminal Phase FinishTPI Terminal Phase Initiation
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TPM Technical Performance Measurement (system)TPR Test Problem Report
TPS Thermal Protection Subsystem fTPUN Test Procedure Update NoticeTR Test Request
Technical ReportTransportation Request
TRA Training Requirements AnalysisTurnaround Requirements Analysis
TRR Test Readiness ReviewTRS Tug Rotational System
Troubleshooting Record SheetTRSD Test Requirements Specification DocumentTS Serial Traceability
Tensile StrengthTest SiteTechnical Support
TSA Test Start ApprovalTSAC Tracking System Analytic CalibrationTSB Twin SidebandTSC Test Setup Complete"TSD Test Start DateTSE Transportation Support EquipmentTSLD Troubleshooting Logic DiagramTSM Trade Study Management
Tail Service MastTSO Time Since Overhaul
Time Sharing OptionTSP Test Software Program
Twisted Shielded PairTSR Technical Status ReviewTSRA Total System Requirements AnalysisTSS Tug Structural SupportTST Test By SellerTSW Test SwitchTT Thrust Termination
Total TimeTTA Therrtomechanical Test AreaTTCA, Thrust Translation Controller AssemblyTTCV Tracking Telemetry, Command and Voice
Ti:EL Tool and Test Equipment List
TrL Transistor-Transistor Logic.,TTU Timing Terminal UnitTTY TeletypeTU Technical UtilizationTV Thermal Vacuum
TelevisionThrust Vector
TVA Thrust Vector AlignmentTVAR Test VarianceTVC Thrust Vector Control
Thermal Vacuum ChamberTVCD Thrust Vector Control Driver
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IP Test Verification Program17, Thermal 'lacuum TestT'ITA Thermal Vacuum Test Article '.
dR Tower
.TWT Tri_sonic 'Wind Tunnel 1rJX Teletype 'dire Transmission
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U/C Under CurrentU/L UplinkU/M UnmannedU/0 Used OnU/V Under VoltageU/'W Used WithUA —Micro Ampere 8
UC Unsatisfactory ConditionUCPa Uniform Control NumberUCR Unsatisfactory Condition ReportUCS Universal Control System
i Utilities Control SystemUD Update xUDB Update BufferUDF Utility and Data, FlowUOL Update LinkUDS Universal Documentation Syste:?UER Unique Equipment Register t
f OF Microfarade UFO User File Directory
UG MicrogramsUHF Ul trafii gh Frequency
1 UI, Unit of Issuei uLL Ullage
ULO Unmanned Launch Operatio5sULT UltimateUMB Umbilical ` t
I UMO Unmanned OrbitalUMVF Unmanned Vertical'F1iohsUPTLM Up-Link Telemetry;Us, United States iUSAF United States Air e. Force
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USBE Unified S-Band Equipmentr
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USBS Unified S-Band System
USEC Microsecond JUSNS United States Navy Ship
` USS United States Standard 1
United States Ship
UST United States Testing Company
UT Universal Time t
UTC United Technology CenterUniversal Test Console
UTE Universal Test Equipment
UU Micromicron
UUT Unit Under Test
UV Under VoltageUltravioletMicrovolt
UVD Under Voltage Device
UVF Unmanned Vertical Flight
Uw Microwatt
_V-
V VelocityVoltVoice
V-A Vibro Acoustic
V/C Vector ControlV/H Velocity-to-Height
VA Volt-AmpereVAB Vehicle Assembly Building
VAC Volts - Alternating CurrentVacuumVehicle Assembly and Checkout
VAFB Vandenberg Air Force Base
VAN USNS Vanguard (STDN)
VAR Variable (Variance-Variation)Volt Ampere Reactive
VASI Visual Approach Slope Indicator
VAST Versatile Avionics System Tester
VAT Vibro-Acovitic Test
VATA Vibro-Acoustic Test Article `-
- VATF Vibro-Acoustic Test Facili ty!l
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1 VC 'lector Character iVelocity Ccunte;
VCB Vertical Location, of the Canter of Boo}ancyVCG Vertical Location of the Center of GravityVCI Velocity Change IndicatorVCM Volatile Condensable MatEriclsVC0 Voltage Controlled OscillatorVCT Voltage Control Transfer
„ VCTR Vector
f (VDC Volts - Direct Current
f VDS Vehicle Dynamics SimulatorVEEI Vehicle Electrical Engine InterfaceVEH Vehicle
' VERIF VerificationVERT VerticalVF Vertical Flight
Video FrequencyVFI Verification Flight InstrumentationVFO ' Variable Frequency OscillatorVFR Visual Flight Rules
i VFT Vertical Flight Test (superceded by OFT)VGP Vehicle Ground PointVGT Vehicle Ground TestVHF Very High FrequencyVHF-AM Very Hi7h Frequency Amplitude Modulator
1 VHF-OF Very High Frequency Direction FinderVIA By Means Of (By Way Of)VIB VibrationVID VideoVIS Verification Information System
Visibilityt VISC Viscosity
Vi Vacuum JacketedVLF Very Low FrequencyVLR Very Low RangeVM Voltmeter
Virtual MemoryVMS Velocity Measuring Systemft VolumeVOM Volt.-Ohmmetert0R VHF Omnidirecticnal .dio-Rare ' «`VORTAC, Variable Omni Range Tactical (VOR and TACAN)VOT' VHF Omr.itestVOX Voice Operated TransmitterVP Vertical Polarization
Vacuum PumpVP=P Volt Peak-to-Peak
VPK Volts Peak -
VPM Vehicle Project ManagerVR Voltage RelayVRB VHF Recovery BeaconVRL Vertical Recovery Line
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VS Staging Velocity FVSA Variable Stability Aircraft
VSI Vertical Speed Indicator ?;Video Simulation Interface4
VSWR Voltage Standing Wave RatioVTP Vehicle Test Plan
Verification Test ProgramVTR Video Tape RecorderVTS Vertical Test StandVTVM Vacuum Tube VoltmeterVTX Vertex }
VU Volume Unit
VV Vent ValveVX Velocity Along the X-Axis
VY Velocity Along the Y-AxisYZ Velocity Along the Z-Axis
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i WBTS Wideband Transmission System 1r^ LU Wire and Cable
WCP tiling Chord Plane
• WCS Work ontrol SystemY^
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- WG Wave GuideWing
WHt, Wheel #WHR Watt-Hour ?:
i WIB When Interrupt BlockWIF hater Immersion Facility
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WIP Work In ProgressWL WavelengthWM Waste Management
WO Work OrderWOW Weight-On-Wheels
- WP Working Pressurea Work Package
WPAFB Wright Patterson Air Force BaseWPC Watts Per CandleWPF Work Process Flow
1 WPI Work Progress Indicator
WPM Words Per MinuteWRG Wiring
a WRL Wing Reference Line
WS Wind Shield i
WSMR White Sands Missile Range
WSTF White Sands Test Facility
WSWR Variable Standing Wave Ratio (Rate)WT tWeightWTR Western Test Range tiWTT Wind Tunnel Test
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WUC Work Unit CodeWX Weather ++
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1X Times (By, Trans-)XCVR TransceiverXCOR TransducerXFO Crossfeed A.
XFEP, Transfer3 XLTN Translation ^.s XMT Transmit
XPNOR Transpondera XTAL Crystal
X sub '0 Orbiter Structural Body Reference, X-AxisX sub P Payload Structural Body Reference, X-AxisX sub S SRB Structural Body Reference, X-AxisX sub T ET Structural Body Reference, X-Axis
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Y YawHorizontal Axis - 'Width of VehicleY-Axis, Horizontal - Width of Vehicle/Structure
YD YardYP Yield Point
YR YearYS Yield Strength
YST Yearly Spares Cost
YT Station Identification Symbol
Y sub 0 Orbiter Structural Body Reference, Y -AxisY sub P Payload Structural Body Reference, Y -AxisY sub S SRB Structural Body Reference, Y-AxisY sub T ET Structural Body Reference, Y -Axis
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ZGT Zero Gravity Trainer
ZI Zone of Interior
Z0 Station identification Symbol, Orbiter X-Axis
ZPN Impedance Pneumogram
ZS Station Identification Symbol, SRB Z-AxisZT Station Identification Symbol, ET Z-Axis
Z sub 0 Orbiter Structural Body Reference, Z-Axis
Z sub P Payload Structural Body Reference, Y-Axis
Z sub S SRB Structural Body Reference, Z-Axis
Z sub T ET Structural Body Reference, Z-Axis'a
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