htf7000 propulsion system update - oracle...
TRANSCRIPT
HTF7000 Propulsion
System Update
Mark Paquette
October 21, 2014
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EXPORT CLASSIFICATION: The enclosed technical data is export
classified as 9E991. Its export is being transmitted under U.S.
Export Administration Regulations designation “NLR” (No License
Required) and is to be used solely by the individual / organization to
whom it is addressed. Diversion contrary to U.S. export laws and
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HONEYWELL CONFIDENTIAL: This copyrighted work and all
information are the property of Honeywell International, Inc., contain
trade secrets and may not, in whole or in part, be used, duplicated,
or disclosed for any purpose without prior written permission of
Honeywell International, Inc. All Rights Reserved.
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Agenda – HTF7000 Propulsion System Update
• ATS Oil Seepage
• Thermal Anti-Ice Valve
• On-Wing Combustor/Turbine Maintenance
• W5/EGT/OSSD Improvement
• Delayed Light-off (Booming) Start
• Thrust Reverser Kicker Plate
• Thrust Reverser Kicker Flange
• EEI Released
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Air Turbine Starter Oil Seepage
• Issue
– Reports of oil streaking from Starter-
to-Accessory gearbox drain
– Nuisance only - No operational
issues
• Action
– Engine oil dye confirms source is
engine oil
– No fits, clearances and o-ring squeeze
or dimensional issues observed
– Seepage may be more prevalent with
HTS type of oils
• Status
– AS907-80-9001 FE issued 6/2011
– S/B released for full distribution
August 29, 2014
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Thermal Anti-Ice Valve Redesign
Issue
• Issues with reliability of Engine Anti-Ice
Valve
Status
• The -7 TAI valve was introduced to
replace the -5 valve
• -7 TAI valve exhibited high infant
mortality across the 3 OEMs
• Failure modes are related to
– Failure to close – piston/inlet galling
– High/Low regulation – insufficient spring
design
• RCCA is underway with GKN. New valve
design to follow
Next Steps
• Present and agree on root cause with
OEM’s – October-2014
• Qualification/Design of new valve (-9)
– Targeting December-2015
– This is driven by OEM requirements•
High/Low regulation – insufficient spring
design
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On-Wing Combustor/Turbine Maintenance
• Honeywell has developed a process to remove the HP Turbines and
combustor while engine is in the horizontal position
– Engine installed on-wing or in maintenance stand
• Process requires three (3) “new” tools in addition to existing tooling
• Process validated on
July 29, 2013
• Service Information letter
issued on October 24, 2013
• LMM Revision’s Released
• Approved all Engine Models
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Improved W5, OSSD and Oil Tube Interface
• Issue
– W5 harness, EGT rake, and OSSD aft engine connectors experiencing over
temp
• Action
– Relocate connectors away from aft hot zone
• Incorporate improved OSSD switch design
• Repositions brackets and clamps
• Incorporate reconfigured oil lines
• Status
– HTF7250, HTF7350 and HTF7500E –
All engines delivered with this configuration
– HTF7000 – Configuration entered production
Q1, 2013
– Service bulletin for fielded engines
Q4, 2014
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Delayed Light-Off (‘Booming’) Investigation
• Issue
– Some reports of delayed light off (“Booming”) during cool/colder ambient
conditions and engine core has little to no residual temperature.
• Nuisance only. No engine/airframe distress occurs
– Delayed light offs reported with improved combustor
• Typical “cool/cold day”, first start
• Action
– Honeywell O.I.W AS907-2009-OIW-032 released June 2009
• Recommends use of “continuous ignition” to prevent “booming” starts
• Bombardier Forum news article issued March 2009
• Status
• Fuel and ignition system test planned to investigate contributing causes
Use of Continuous Ignition Prevents Delayed Light-Off Starts
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Thrust Reverser – Kicker Plate
• Issue
– Thrust Reverser Kicker Plate is prone to cracking at the base of the notched area
• Status
– Honeywell service bulletin S/B 78-30-010 released 10/17/13
– Kicker plate is removed, modified and reassembled with doubler strap
– S/B applicable to 3 Kicker Plates per aircraft
• 1 ea Lower Door and 1 ea R/H upper door
Modification Incorporated into New Thrust Reverser Production
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Thrust Reverser – Kicker Flange
• Issue
– Analysis has found a potential cracking of the Pivot Door Flange in the area
aft of the Forward Fitting Assembly Plate
– Low cycle fatigue issue – No reported field events
• Action / Status
– Honeywell has issued service bulletin 78-30-008, 10/17/12014
– Provides for installation of strengthened Forward Fitting Assembly
– All 4 pivot doors affected
Forward Fitting
Assembly
Affected Area
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EEI Software Released for Windows 7
• EEI Windows 7 Software (version 3.00.00) is a result of
qualifying the EEI software on the Windows 7 OS platform
(Enterprise 32-bit & Professional 64-bit) and fixing certain
outstanding software defects and implementing some
requested enhancements
• The software baseline used
was EEI version 2.09.00
• Only the EEI software
changed for the EEI kit
configuration
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EEI Configurations
Software Version Operating System SW Part Number
EEI.2.09.00 Microsoft Windows
95/98/NT/ME/2000/XPSW4208480-1001
EEI.3.00.00 Microsoft Windows 7
- Enterprise 32-bit
- Professional 64-bit
SW4208480-1002
Questions?