B333 羽ばたき飛行における非定常流体力の実験的研究(B-33 生物流体(3),一般講演)

概要

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Flapping flight is useful for micro aero vehicle being studied for reconnaissance or monitoring. But the theory has not been established well. This study is focued on hovering flight of Humming Bird, which size is the upper-limit for animals and insects flying mainly in hovering mode. As first step, experiment was conducted on fanning plain wing in single-degree-of-freedom periodic motion. From force measurement, we found that the pulsive forces with two peaks are acted at the beginning of each stroke and these peaks were caused of drag from rapid accelaration and wake capture. In addition, visualization revealed that the three dimensional vortex structure like a horseshoe was emerged at the first stroke and the spanwise flow was induced on the wing surface.
日本流体力学会の論文
2004-08-09