Multiple locking device insensitive to thermal variations especi

Details Multiple locking device insensitive to thermal variations especi Multiple locking device insensitive to thermal variations especi

1983-01-17

1985-01-01

Barefoot, Galen L.

Aeronautics and astronautics

Spacecraft

Spacecraft formation, orbit, or interplanetary path

244173, B64G 166, B64G 144

Patent

active

044912897

ABSTRACT:
A locking device for clamping or sheaving appendices aboard a satellite during the launching phase provides for temporary locking thereof which both limits the required holding forces and authorizes multiplication of the clamping or sheaving points for each appendix while being insensitive to temperature variations. It comprises a stop catch jointed to a foot rigidly secured to the satellite structure, to ensure immobilization of the element to be temporarily locked thereby, an elbow lever hinged to the stop catch and connected to a sheaving cable, and an elastic link exerting upon the lever a force to balance the holding force exerted by the sheaving cable. The locking device remains in the locked position as long as the shearing device for cutting off the cable has not been operated. Furthermore the combination of the elbow lever and the elastic link provides means for ensuring perfect locking, even in the case of significant differential dilatations between the body of the space vehicle and the sheaving cable.

REFERENCES:
patent: 4347023 (1982-08-01), Rizos
Barkats, "Development of a Rigid Fold-Out Solar Array . . . ", Proc. European Symp. on Photovoltaic Generators in Space, 9-1978, pp. 169-180.

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