Aspects of the present disclosure generally relate to an SMA actuator that includes a cooling device disposed within a torque tube. In one aspect, the cooling device includes a sliding sleeve, an expandable sleeve, and plurality of cooling fins coupled to the expandable sleeve. Axial movement of the sliding sleeve relative to the expandable sleeve facilitates radial expansion of the expandable sleeve and urges the cooling fins into contact with the torque tube. The cooling fins function as heat sinks when in contact with the torque tube to facilitate the removal of heat from the torque tube to increase the cooling rate of the torque tube. During heating of the torque tube, the cooling fins may be spaced apart from the torque tube to reduce the thermal mass that is heated, thus increasing the heating rate of the torque tube.
INTEGRATED HIGH THERMAL CONDUCTIVE FIBER AS COOLING FIN FOR SMA ACTUATOR WITH EXPANDABLE SLEEVE
2016-07-14
Patent
Electronic Resource
English
IPC: | F03G Feder-, Gewichts-, Trägheits- oder ähnliche Kraftmaschinen , SPRING, WEIGHT, INERTIA, OR LIKE MOTORS / B64C AEROPLANES , Flugzeuge / F28F Einzelheiten von Wärmetauschern oder Wärmeübertragungsvorrichtungen für allgemeine Verwendung , DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION |
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