736 蛾の前進飛行の安定性の計算流体力学的考察(J02-5 生物の機能/運動/機構/模倣(5),ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Insects are master in maneuvering. Here we present an integrated study of flapping flight stability in a forward flight of hawkmoth by combing a biology-inspired dynamic flight simulator and a recently developed optimal algorithm for flapping wing kinematics. We first compute the vortex flows around a wing-body hawkmoth model, the aerodynamic forces including the lift and drag as well as three moment components. Then, an optimal algorithm is introduced to optimize the flapping wing kinematics so as to realize a trimmed (or balanced) flapping flight mode that the lift is exactly equal to the weight while the drag vanishes at a constant, low and/or high flight speed including hovering. The computed results are compared with experimental data and validated to be reasonable; our results indicate that small variation in flapping wing kinematics may lead to significant change in the force generation.
社団法人日本機械学会の論文
2008-08-02