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CATAPULT CARTRIDGE
DART Stabilization Subsystem

Aviation Structural Mechanic E2 - How airplanes are built and how to maintain them
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the seat and pilot out of the cockpit and to expel the drogue container and chute from the seat. The catapult cartridge also initiates ignition of two SBR motors and initiates the post-ejection sequencing subsystem (fig. 6-41). CATAPULT TUBE ASSEMBLIES.— The catapult tube assemblies house the catapult lock and unlock mechanism, provide physical support for the seat bucket via the seat height adjustment actuator and slipper assemblies, and support the trombone assemblies. They also support a headrest and personnel parachute container assembly, drogue parachute and container assemblies, and associated interconnecting hardware. The catapult tube assemblies also provide several other functions. First, they provide the energy and movement for the canopy piercers and breakers to penetrate the aircraft canopy. They also route and apply ballistic gas pressure to eject the drogue container and parachute. They route and apply ballistic gas pressure to initiate the seat- back rocket motors. Finally, they route and apply ballistic gas pressure to initiate the Figure 6-41.—Catapult cartridge and tube assemblies. 6-57







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