Research Article

Multistrand, Fast Reaction, Shape Memory Alloy System for Uninhabited Aerial Vehicle Flight Control

Figure 14

Phase lag given a sinusoidal driving signal with an 8 sec. period and repeatability of deflections over 3 min. at 1/4 Hz of actuator driving signal, 72 deg. F, 20 ft/s airstream, 60% relative humidity for both the diode actuator system, and the power transistor actuator system.