Rotary actuator using shape memory

Details Rotary actuator using shape memory Rotary actuator using shape memory

1998-03-17

1999-11-02

Eldred, J. Woodrow

Aeronautics and astronautics

Spacecraft

With payload accommodation

60527, 60528, B64G 144

Patent

active

059754680

ABSTRACT:
A rotary actuator includes a bar made of shape memory alloy having ends provided with thermally insulating interface elements for interfacing with elements that are to be rotated relative to each other. An electric heater surrounds the bar and is apt to heat it above its transition temperature to the austenitic domain. The actuator is suitable for deploying or rotating solar panels.

REFERENCES:
patent: 4700541 (1987-10-01), Gabriel et al.
patent: 4798051 (1989-01-01), Foote
patent: 4841730 (1989-06-01), McDonald
patent: 5127228 (1992-07-01), Swenson
patent: 5520359 (1996-05-01), Merhav et al.
patent: 5620529 (1997-04-01), Bassily et al.
patent: 5653407 (1997-08-01), Bertheux et al.
Patent Abstract of Japan, vol. 10, Na. 204 (M-499) (2260), Jul. 17, 1986 & JP 61 046476 A (Matsushita), Mar. 6, 1986-Abstract--.

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