Ejection seat having combined catapult/rocket motor providing se

Details Ejection seat having combined catapult/rocket motor providing se Ejection seat having combined catapult/rocket motor providing se

1985-09-30

1988-06-07

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

B64D 2510

Patent

active

047491540

ABSTRACT:
An aircraft ejection seat (10, 120) having a combined catapult (46, 122) and rocket motor (88, 90, 130, 132, 142, 144) in which the amount of rocket thrust is selectable. An outer catapult tube (46, 122) forms a seat support structure. In the outer catapult tube there is a plug (66, 66A) at its upper end before ejection and carries a propellant for ejecting the seat from the aircraft when the propellant is discharged. There is a fixed sleeve (84) in the lower end of the outer catapult having an internal circumferential bearing surface with which the inner catapult tube is engaged before and during ejection. The holding sleeve is positioned to engage the plug (66, 66A) when the ejection has become complete. The plug then seals the outer catapult to receive gas from the rocket gas generators to elevate the seat substantially above the aircraft, as necessary under certain conditions.

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