Aeronautics and astronautics – Aircraft structure – Fuselage and body construction
Patent
1979-06-06
1981-01-27
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft structure
Fuselage and body construction
280753, 297466, B64D 2502, B64D 2510
Patent
active
042470641
ABSTRACT:
An ejection seat-mounted system for temporary secure attachment of the li of an aviator or other user to the seat during ejection, preventing limb flail and consequent injury. Initially, two rigid arm restraints are pivotably mounted to the sides of the seat in a nonobstructive raised position, and two rigid leg restraints are mounted at the sides of the seat in a substantially nonobstructive extended position to help keep the aviator's legs in place. After the aviator pulls a D-ring initiating ejection, a first gas generator is fired, causing pivoting of the two seat-mounted arm restraints through 135.degree., and retraction and rotation of the two seat-mounted leg restraints, each of which captures one of the aviator's limbs, draws it to the seat, and holds it in place on or with respect to the seat. At a predetermined time controlled by a timer or controller, after firing of the first gas generator, for separation of the aviator and his ejection seat, a second gas generator and appropriate explosive bolts are fired by the ejection sequencing system of the seat. Actuation of the bolts and of the second gas generator causes separation of all four restraints from the seat, leg restraints forwardly and arm restraints sideways, enabling separation of the aviator from the seat so that he can operate his parachute and make a safe landing.
REFERENCES:
patent: 2709557 (1955-05-01), Replogle et al.
patent: 2829850 (1958-04-01), Culver
patent: 2873122 (1959-02-01), Peras
patent: 2953331 (1960-09-01), Halcomb et al.
patent: 3218103 (1965-11-01), Boyce
Schulman Marvin
Schwartz Marcus
Frankfort Charles E.
Hansen Henry
Sciascia R. S.
The United States of America as represented by the Secretary of
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