FRC EAST Release 1002017 Distribution Statement A Approved for public release distribution is unlimited Mo Khalil CH53K Airframe Engineer ISSC MCAS Cherry Point Shipboard Composite ID: 676855
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Slide1
Shipboard Composite
Repair Challenges
FRC EAST Release 100-2017 Distribution Statement A – “Approved for public release; distribution is unlimited”
Mo Khalil
CH-53K Airframe EngineerISSC MCAS Cherry PointSlide2
Shipboard Composite Repair Challenges
Based on engineering investigations, meetings and correspondence with maintainers and SME’s, and aircraft components damage repaired at FRC East, shipboard composite maintenance and repair faces a unique set of challenges due to:
Operating Environment
Operational TempoLimited Space
Flight and Landing Loads
8/23/2017
Mo Khalil H-53 FST
Distribution ASlide3
Shipboard Composite Repair Challenges
Operating environment:
Encourages corrosion of both dynamic components (rotor blades) and airframe
Rotor blade replacement is a lengthy process
Most blade repairs are performed off aircraftAirframe components are difficult to replace
Airframe repairs have more variables than standard dynamic components repairs
Drives more scheduled inspections to limit corrosion
Fleet aversion
Increasingly difficult due to size and number of composite panels
8/23/2017
Mo Khalil H-53 FST
Distribution ASlide4
Shipboard CompositeRepair Challenges
Operational tempo:
Limited number of shipboard aircraft
Requires short TAT for
repairs Results
in “inventive”
repairs
Remove and replace instead of repair creates a self-feeding cost problem
8/23/2017
Mo Khalil H-53 FST
Distribution ASlide5
Shipboard Composite Repair Challenges
Limited Space:
Large impact on Pack Up Kits (PUK’s)
Limited storage space for Support Equipment
Limited storage space for materialsIncreased potential of maintenance induced damage
8/23/2017
Mo Khalil H-53 FST
Distribution ASlide6
Shipboard Composite Repair Challenges
Flight and Landing Loads:
Higher landing loads and increased potential for hard landing
Composite materials are more difficult to inspect
Interpretation of inspection limits can be subjective
STOVL/VSTOL
e
xhaust configuration in fixed wing aircraft and prolonged hover of rotary wing induce airframe damage
8/24/2017
Mo Khalil H-53 FST
Distribution ASlide7
Shipboard Composite Repair Challenges
Questions?
8/23/2017
Mo Khalil H-53 FST
Distribution A