Ejection seat stabilizing apparatus and method

Details Ejection seat stabilizing apparatus and method Ejection seat stabilizing apparatus and method

1985-09-30

1988-06-07

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

244122A, 244141, B64D 2510

Patent

active

047491531

ABSTRACT:
Inner catapult tubes (8) of aircraft (2) are pivotably mounted on the upper rear portion of ejection seat (12). When they separate from outer catapult tubes (4), tubes (8) pivot upwardly and rearwardly to form stabilizing booms (8). A drag device (30,30',30") is stowed inside the outer end of each boom (8) and extends axially outwardly therefrom upon deployment to apply a small drag load to the upper portion of seat (12) and counteract a tendency of seat (12) to pitch forward during operation of stabilization control rockets (18,20). The drag surfaces of devices (30,30',30") are folded around a center shaft (32,32',32") when stowed and extend radially outwardly from shaft (32,32',32") when deployed. The drag device may be a ram air inflatable device (30), a split tube/daisy petal device (30"), or a device having spring steel ribbons (40) forming a tuft-like appendage (30'). Ribbons (40) are wound around shaft (32' ) when stowed and spring radially outwardly from shaft (32') upon deployment.

REFERENCES:
patent: 2918235 (1959-12-01), Aburg et al.
patent: 2931598 (1960-04-01), Sanctuary
patent: 2999659 (1961-09-01), Martin
patent: 3047259 (1962-07-01), Tatnall et al.
patent: 3648955 (1972-03-01), Stencel et al.
patent: 3662978 (1972-05-01), Hollrock
patent: 4470565 (1984-09-01), Zenobi et al.

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