Shape Memory Alloy Actuated Vortex Generators

Abstract With the goal of improving aircraft efficiency, Boeing in collaboration with NASA Glenn Research Center (GRC) have developed and successfully flight tested environmentally activated vortex generators that passively, repeatedly, and accurately retract during cruise and deploy during take-off and landing phases. The capability discussed in this article is based upon recent advancements in shape memory alloy rotary-actuation technology, which included improved alloy systems, design tools, best practices, published standards, and previous wind tunnel and flight test demonstrations.