Aircraft ejection seat system

Details Aircraft ejection seat system Aircraft ejection seat system

1983-01-18

1985-03-19

Blix, Trygve M.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

244150, B64D 2510, B64D 1774

Patent

active

045054444

ABSTRACT:
An aircraft ejection seat system which incorporates means for permitting deployment of a main parachute at the end of a delay after ejection and a mode selector mechanism operable to permit such deployment at a shorter predetermined time after ejection if ejection takes place at low speed and low altitude. The mode selector mechanism incorporates a piston slidable along a bore to operate a firing pin to fire a cartridge and thus initiate the earlier deployment of the parachute. Means for sensing barometric pressure, air speed, and deceleration are arranged, if the sensed value indicates the longer delay period is required, to project respective plungers transversely into the bore to prevent the piston from striking the firing pin. A further plunger remains projected into the bore unless auxiliary sensing means positively senses low speed and altitude.

REFERENCES:
patent: 3311330 (1967-03-01), Hofferberth et al.
patent: 3530868 (1970-09-01), Rickands
patent: 3547383 (1970-12-01), Carpenter, Jr.
patent: 3787011 (1974-01-01), Phillips et al.
patent: 3862731 (1975-01-01), McIntyre
patent: 4057206 (1977-11-01), Duncan et al.

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