Abstract
This paper outlines an investigation using shape memory alloy (SMA) filaments to drive a flight control system with precision control in a real flight environment. An antagonistic SMA actuator was developed with an integrated demodulator circuit from a JR NES 911 subscale UAV actuator. The SMA actuator was installed in the fuselage of a 2m uninhabited aerial vehicle (UAV) and used to control the rudder through slips and coordinated turns. Rudimentary design envelope modeling was performed to verify peak-to-peak throw levels and airload resistance capabilities. The actuator was capable of 20 degrees of positive and negative deflection and was capable of 7.5 in-oz (5.29N-cm) of torque at a bandwidth of 2.8Hz.
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