Flexible Wing Kinematics of a Free-Flying Beetle (Rhinoceros Beetle Trypoxylus Dichotomus) |
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| Authors: | Tien Van Truong Tuyen Quang Le Doyoung Byun Hoon Choel Park Minjun Kim |
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| Affiliation: | 1. Department of Aerospace and Information Engineering, Konkuk University, Seoul, South of Korea;2. Department of Mechanical Engineering, Sungkyunkwan University, Suwon, South of Korea;3. Department of Advanced Technology Fusion, Konkuk University, Seoul, South of Korea;4. Department of Mechanical Engineering, Drexel University, Philadelphia, Pennsylvania, USA |
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| Abstract: | Detailed 3-Dimensional (3D) wing kinematics was experimentally presented in free flight of a beetle,Trypoxylus dichotomus,which has a pair of elytra (forewings) and flexible hind wings.The kinematic parameters such as the wing tip trajectory,angle of attack and camber deformation were obtained from a 3D reconstruction technique that involves the use of two synchronized high-speed cameras to digitize various points marked on the wings.Our data showed outstanding characteristics of deformation and flexibility of the beetle's hind wing compared with other measured insects,especially in the chordwise and spanwise directions during flapping motion.The hind wing produced 16％ maximum positive camber deformation during the downstroke.It also experienced twisted shape showing large variation of the angle of attack from the root to the tip during the upstroke. |
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