Shape memory alloy/glass fiber woven composite for soft morphing winglets of unmanned aerial vehicles

被引:68
作者
Han, Min-Woo [1 ]
Rodrigue, Hugo [1 ,2 ]
Kim, Hyung-Il [1 ]
Song, Sung-Hyuk [1 ]
Ahn, Sung-Hoon [1 ,2 ]
机构
[1] Seoul Natl Univ, Dept Mech & Aerosp Engn, Gwanak Ro 1, Seoul 08826, South Korea
[2] Seoul Natl Univ, Inst Adv Machines & Design, Gwanak Ro 1, Seoul 08826, South Korea
基金
新加坡国家研究基金会;
关键词
Polymer-matrix composites (PMCs); Smart materials; Mechanical testing; Soft morphing; GLIDING BIRDS; INDUCED DRAG; TIP SLOTS; SMART; AERODYNAMICS; DESIGN; DEFORMATIONS; REDUCTION; MODEL; BEAM;
D O I
10.1016/j.compstruct.2015.12.051
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Morphing technology is inspired by biological motion for implementation in missions in a variety of areas without shape-change device. This study investigates the aerodynamic performance of a self-contained morphing winglet for an unmanned aerial vehicle (UAV) that mimics the wing-tip feathers of gliding birds. A smart soft composite (SSC), formed of shape memory alloy (SMA) wires and glass fibers within a soft polymeric matrix, was used to fabricate morphing winglets. Experiments were conducted with various diameters and numbers of embedded SMA wires, and numbers of the glass-fiber fabric lamina, which were compared with an analytical model. Morphing winglets were implemented at both wing tips of a WASP 4/7-scale UAV, and the aerodynamic characteristics were investigated using a wind tunnel testing with various attack angles. As results, when the morphing winglet was actuated, the lift-to drag ratio increased by 5.8% compared with the flat wing geometry for attack angle greater than 5 degrees. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:202 / 212
页数:11
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