Dynamic characterization of a bio-inspired variable stiffness multi-winglet device

Kyung Jun Lee; Aimy Wissa

doi:10.1117/12.2558348

21 May 2020 Dynamic characterization of a bio-inspired variable stiffness multi-winglet device

Kyung Jun Lee, Aimy Wissa

Proceedings Volume 11377, Behavior and Mechanics of Multifunctional Materials IX; 113770K (2020) https://doi.org/10.1117/12.2558348
Event: SPIE Smart Structures + Nondestructive Evaluation, 2020, Online Only

Abstract

Researchers incorporated adaptive wingtip devices in UAVs and full-scale aircraft to improve aerodynamic efficiency and to act as control effectors. However, these devices had been characterized statically, where their dynamic response was ignored. This paper characterizes the deployment dynamics of a novel adaptive multi-winglet (AMW) device. Each winglet in AMW is a feather-inspired composite exhibiting bending-torsion coupling. The gap spacing between each winglet is controlled by SMAs to vary the effective stiffness of AMW. Wind tunnel experiment’s results show the aerodynamic forces and moments produced by a wing with an AMW device with different gap spacing under different flight conditions.

Conference Presentation

Citation Download Citation

Kyung Jun Lee and Aimy Wissa "Dynamic characterization of a bio-inspired variable stiffness multi-winglet device", Proc. SPIE 11377, Behavior and Mechanics of Multifunctional Materials IX, 113770K (21 May 2020); https://doi.org/10.1117/12.2558348

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