Development of shape memory alloy (SMA)-based actuator for remotely piloted vehicles (RPVs)

M. Hari Prasad

doi:10.1117/12.514738

14 October 2003 Development of shape memory alloy (SMA)-based actuator for remotely piloted vehicles (RPVs)

M. Hari Prasad

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514738
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

Abstract

While the experimental use of shape memory alloys (SMAs) is widespread in aerospace integrated actuation systems, much of the practical value of SMA technology is realized in linear and rotary actuators. This report will introduce an attempt to develop a full-scaled SMA based actuator to replace electro-mechanical actuator for flap actuation of a Remotely Piloted Vehicle (RPV). At the heart of this actuator there is thermally sensitive wire that, when heated, contracts and provides useable mechanical energy. This linear actuation is converted into rotary, for the required actuation of flap. The actuator configurations were sized to fit inside the wing of the RPV where presently the electro-mechanical actuator is housed. The torque supplied to the flap is similarly calculated from full-scale requirements. Using common engineering principles, this design will demonstrate how to design a typical SMA actuator. Test of the actuator performance (stroke, force movement) is done on special test fixture.

Citation Download Citation

M. Hari Prasad "Development of shape memory alloy (SMA)-based actuator for remotely piloted vehicles (RPVs)", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514738

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