F-0840 蚊の羽ばたき飛行に関する実験的研究 : 蚊の揚力と羽根モデルの揚力との比較(J24-2 生物の運動)(J24 ヒトの運動機能(手腕系・下肢系,脊椎系,関節系など)/生物の運動機能(バイオミメティクス)とバイオロボット)

概要

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Mosquito generates lift by beating. We tried to measure the lift directly. We attached a mosquito at one end of the cantilever beam. We measured the difference of deflections between before and after beating. The results showed that lift by beating motion was about three times greater than mosquito's weight. An enlarged scale model experiment was carried out using a very low speed wind tunnel under the condition that Reynolds number and Strouhal number were made equal to those of real mosquito's motion. The flow around the wing model moving up and down was visualized using smoke method. Unsteady vortices were generated on the upper surface of the model wing in the period of downstroke. We measured the circulation of the vortices and calculated lift force on the assumption that the flow was quasi-steady. We found that the lift obtained from the model wing was about 70% lower than the lift obtained from the real mosquito's lift.
社団法人日本機械学会の論文
2001-08-22