Failure Analyses of Steel Breech Chambers Used With Aircraft Cartridge Ignition Starters
Cartridge-pneumatic starter systems are used on military aircraft. In the cartridge mode used for alert starts, the starter turbine is driven by hot gases produced through the controlled burning of a solid propellant cartridge within a closed chamber (the breech chamber/cartridge chamber assembly). Premature failures of steel breech chambers have been prevalent enough to cause serious concern. The breech chamber is fabricated from a 4340 Ni-Cr-Mo steel forging heat treated to a hardness in the range HRC 40 to 45. The failures have taken several forms, including fracture and unzipping of the chamber dome, burn-through of the dome, and...
Philip C. Perkins, Raymond D. Daniels, A. Bruce Gillies, Failure Analyses of Steel Breech Chambers Used With Aircraft Cartridge Ignition Starters, ASM Failure Analysis Case Histories: Air and Spacecraft, ASM International, 2019, https://doi.org/10.31399/asm.fach.aero.c9001145
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