Aeronautics and astronautics – Safety lowering devices
Patent
1975-03-31
1977-02-15
Blix, Trygve M.
Aeronautics and astronautics
Safety lowering devices
244141, 244122A, B64D 2508
Patent
active
040078957
ABSTRACT:
A system for ejection of a crew member from an aircraft is disclosed. In one embodiment a mass is fired from a mortar or similar ejection device and the mass has attached to it a pendant which is resilient. As the pendant reaches the limit of its length as a result of the motion of the mass, the stretch force therein pulls down the seat pan upon which the crew member is resting and a divestment device is actuated. The crew member is then accelerated upward and out of the aircraft. Once the crew member is clear of the aircraft, the pendant's weak link separates just before the peak loading is reached and the action of the pendant initiates deployment of the parachute. The mass and pendant then separate and carry on out of the area of the pilot in a ballistic trajectory. In a second embodiment of the invention, a slipping clutch mechanism is utilized such that as the pendant runs off the clutch spool, and tightens, the pendant spool begins to rotate against the clutch torque feeding out more line. The upward force exerted by the clutch on the crew member's harness ejects him out of and away from the aircraft. When the end of the line on the spool is reached, the ball continues on by itself in a ballistic trajectory away from the escape area. As in the first embodiment, the run-off of the pendant from the clutch spool begins the deployment sequence of the crew member's parachute.
REFERENCES:
patent: 3158344 (1964-11-01), Koochembere
patent: 3355127 (1967-11-01), Stanley et al.
patent: 3646847 (1972-03-01), Drew
patent: 3807671 (1974-04-01), Stencil
patent: 3841590 (1974-10-01), Valentine
Barefoot Galen
Blix Trygve M.
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