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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Locomotion by Tandem and Parallel Wings (A Note on the Flight of Dragonflies and Beetles)
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Locomotion by Tandem and Parallel Wings (A Note on the Flight of Dragonflies and Beetles)

机译：串联和平行翼的运动（关于蜻蜓和甲虫飞行的注释）

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摘要

A two-dimensional analysis was carried out on the locomotion by tandem and parallel wings in relation to the free flight of dragonflies and beetles, remarking the mutual interference between fore and hind wings. The results obtained are summarized as follows: In the case of tandem wings, (1) High thrust and propulsive efficiency can be achieved when the f orewing oscillates with a definite phase lag behind the hindwing, as in the case of real dragonflies, ( 2 ) Somewhat smaller amplitude of hindwing leads to optimum condition for work sharing of two wings, (3) The hard forewing does not serve for the thrust and propulsive efficiency, whereas the hard hindwing does for the augmentation of them ; In the case of parallel wings, ( 4 ) The hard wing placed near the soft wing acts nearly as an infinite plate, as for the ground effect, increasing both thrust and propulsive efficiency.
机译：对与蜻蜓和甲虫的自由飞行有关的串联和平行翼的运动进行了二维分析，表明了前翼和后翼之间的相互干扰。得出的结果概括如下：在串联机翼的情况下，（1）当飞行以一定的相位滞后于后机翼时，可以实现高推力和推进效率，就像真正的蜻蜓一样，（2 ）较小的后翼振幅为两个翼的分担工作提供了最佳条件，（3）硬前叉不能起到推力和推进效率的作用，而硬后翼却可以增加翼的推力和推进效率；在平行机翼的情况下，（4）放置在软机翼附近的硬机翼几乎起着无限板的作用，就地面效应而言，既增加了推力又提高了推进效率。

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