thermal design validation of the mars scout phoenix payload · 2007. 9. 12. · phoenix 13 national...
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Thermal Design Validation of the
Mars Scout Phoenix Payload
Glenn T. TsuyukiJet Propulsion Laboratory, California Institute of Technology
Chern-Jiin Lee
Applied Sciences Laboratory
September 11, 2007Thermal & Fluids Analysis Workshop 2007
Cleveland,OH
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
1
National Aeronautics and
Space Administration
Outline
• Phoenix Mission Description
• Phoenix Flight System & Payload
• Initial Payload Design Responsibility Approach
– Lessons Learned
• Revised Approach for Payload Design Validation
• Conclusions
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
2
National Aeronautics and
Space Administration
Phoenix OverviewWhat is Phoenix?
• Phoenix will be the next NASA Mars landed mission
• Phoenix utilizes the terminated MSP’01 lander, improved through Return To Flight upgrades
• Phoenix will fly many of the lost MPL (Mars 98) payloads and some from MSP’01
• Phoenix utilizes a powered descent system unlike MPF and MER
– More scalable
– Provides soft landing capabilities
– More precise placement on the surface
• Key Partners– The University of Arizona provides the PI, Peter Smith,
and several instruments as well as the PIT and SOC
– JPL provides Project Management, Systems Engineering, MOS/GDS, as well as the RA and MECA instruments
– Lockheed Martin provides the Flight System and Operations support
– Instruments are supported as well through contributions from all over the world
Spacecraft, ATLO, Mission ops *
Mgmt, Sys. Eng., Mission Assurance, Payloads & PL MgmtNavigation, MOS/GDS
PI, Science team, Instruments, PIT, SOC, E/PO
•CSA/MDR/Optech•Provides MET station and optical Lidar
•Max Planck Institute for Aeronomy (MPAe)
•Provides RA camera (’01) and calibration
•University of Neuchatel/Swiss Federal Institute of Technology
•Provides Atomic Force microscope for MECA (’01)
•University of Copenhagen•Provides magnets for MECA and SSI cal target
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
3
National Aeronautics and
Space Administration
Science Objectives
• Verify the Odyssey discovery of near surface ice in the northern plains
– Find a safe landing site between 65 and 72°N– Land during northern summer after any CO2 frost has
evaporated– Dig to an ice layer (or to 1meter), provide samples for
analysis
• Study the history of water in all its phases– Determine the vertical profile of water, chemistry and
minerals– Identify the altered (aqueous) minerals that make up the soil– Investigate the wet chemistry of the soil in special beakers– Study the geomorphology at all scales from regional to
single grain
• Study the polar weather and climate concentrating on the boundary layer
• Determine the habitability and biological potential of the ice-soil mixture
– Does unfrozen water periodically wet the soil?– Are there sources of energy for micro-organisms?– Do all the biogenic elements exist in a usable form?– Are there severe hazards to life (oxidants, toxins, etc.)?
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
4
National Aeronautics and
Space Administration
Phoenix Timeline
Launch
10/03 1/04 4/04 7/04 10/04 1/05 4/05 7/05 10/05 1/06 4/06 7/06 10/06 1/07 4/07 7/07 10/07 1/08 4/08 7/08 10/08 1/09 4/09 7/09 10/09
Phase B Phase C/D Phase E
KSC Ops
ATLO - DenverTCM-1&2 TCM-3,4,5&6
EDL
Surface Ops
Data Archival
Surface
Operations
May 26 – Oct 25
2008
Separation Entry Terminal
Descent
EDL
May 25, 2008
Launch
Window
Aug 3 – Aug 24
2007
Project
PDR/CRProject/FS
CDRPMSR
Flt System Restoration
Test-1 Test-2
Payload EM Development Payload Flt Development
PIT Operations
Prepare Hot Fire Tests
Inheri-
tance
Reviews
Today
Key Dates:ATLO Readiness Review March ’06PIT Readiness Review March ’06Pre-Ship Review April ’07
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
5
National Aeronautics and
Space Administration
Flight Configurations
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
6
National Aeronautics and
Space Administration
Integrated Science Payload
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
7
National Aeronautics and
Space Administration
Payload
Robotic Arm (RA, MPL, MSP’01)
JPL
Robotic Arm Camera (RAC, MSP’01)
Max Plank Institute Aeronomie
Microscopy, Electrochemistry & Conductivity Analyzer
(MECA, MSP’01)
JPL
Thermal Evolved Gas Analyzer (TEGA, MPL)
University of Arizona
Mars Descent Imager (MARDI, MSP’01)
MSSSEM Meteorological Package with LIDAR
Canadian Space Agency
EM Surface Stereo Imager (SSI, MPL)
University of Arizona
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
8
National Aeronautics and
Space Administration
Mission Phase Overview
Launch Configuration
CruiseHypersonic EntryWith Guidance
ParachuteHeatshieldSeparation
Terminal Descent and LandingLander with Deployments
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
9
National Aeronautics and
Space Administration Initial Payload Design
Responsibility Approach
• Each payload was responsible for the development & validation of their thermal design
– Thermal interface information provided by:
• JPL for Cruise, EDL, & Landed Surface thermal environments
• LMSSC for spacecraft geometry & thermo-optical properties, and reduced analytical
model requirements
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
10
National Aeronautics and
Space Administration
Lessons Learned
• The process lacked overall system engineering
• There was a wide spectrum of thermal engineering expertise across the payload element
• Interactions were complicated by the number of institutions involved– International partners further slowed the
communication process due to ITAR
• Post-CDR changes needed to ensure design validation success
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
11
National Aeronautics and
Space AdministrationRevised Approach for Payload
Thermal Design Validation - 1/2
• JPL took on overall payload system thermal design engineering responsibility– Coordinated & communicated all
environmental & spacecraft information• Facilitated delivery of test-correlated reduced
analytical models
– Identified & rectified thermal engineering proficiency gaps
• Expanded JPL’s involvement with specific payloads
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
12
National Aeronautics and
Space AdministrationRevised Approach for Payload
Thermal Design Validation – 2/2
– Defined landed operational scenarios with
Project System Engineering
• LMSSC became responsible for conducting integrated thermal analyses for all mission phases
– Analyses results used for design validation
– Spacecraft & payload analytical models
correlated to System-Level Thermal
Testing
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
13
National Aeronautics and
Space Administration Payload Thermal Design
Validation Results – PEB TMMLower PEB: Correlated Model
-55
-50
-45
-40
-35
-30
-25
3/1/07 12:00:00 3/2/07 00:00:00 3/2/07 12:00:00 3/3/07 00:00:00 3/3/07 12:00:00
Time, Sec
PEBL03 PEBL04 PEBL05 PEBL06 PEBL07
PEBL08 PEBL09 EGA08 PEBL (Model)
EGA Regulator
Only
PEBL Patch Heaters &
Regulator
Temperature, ºC
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
14
National Aeronautics and
Space Administration Payload Thermal Design
Validation Results – Integrated Model
WORST HOT & COLDFLIGHT PREDICTIONS
MAX & MIN ALLOWABLEFLIGHT TEMP LIMITS
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Thermal & Fluids Workshop 2007
September 10 -14, 2007
PhoenixPhoenix
15
National Aeronautics and
Space Administration
Conclusions
• Thermal system engineering, especially, for
a payload suite is crucial to mission success
• Use the strengths of the spacecraft & payload
team members to establish a tractable
strategy
– Also understand team weaknesses to bolster as
necessary
• The payload thermal design validation was
successful
– Early cruise flight data are within flight predictions
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Questions & Answers