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首页> 外文期刊>International journal of micro air vehicles >Wing Flexibility Effects in Clap-and-Fling
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Wing Flexibility Effects in Clap-and-Fling

机译：机翼和襟翼的机翼灵活性效应

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摘要

The work explores the use of time-resolved tomographic PIV measurements to study a flapping-wing model, the related vortex generation mechanisms and the effect of wing flexibility on the clap-and-fling movement in particular. An experimental setup is designed and realized in a water tank by use of a single wing model and a mirror plate to simulate the wing interaction that is involved in clap-and-fling motion. The wing model used in the experiments has the same planform with the DelFly II wings and consists of a rigid leading edge and an isotropic polyester film. The thickness of the polyester film was changed in order to investigate the influence of flexibility. A similarity analysis based on the two-dimensional dynamic beam equation was performed to compare aeroelastic characteristics of flapping-wing motion in-air and in-water conditions. Based on the experimental results, the evolution of vortical structures during the clap-and-peel motion is explained. The general effects of flexibility on vortex formations and interactions are discussed. It was observed that the flexibility affects the behavior and orientation of the vortices in relation to the deformation of the wing and interaction with the mirror plate.
机译：这项工作探索了使用时间分辨层析PIV测量来研究襟翼模型，相关的涡流生成机制以及尤其是襟翼对襟翼和襟翼运动的机翼柔性的影响。通过使用单个机翼模型和镜板在水箱中设计并实现了一个实验装置，以模拟机翼参与拍打和飞行动作的相互作用。实验中使用的机翼模型与DelFly II机翼具有相同的平面形式，并且由刚性前缘和各向同性聚酯薄膜组成。改变聚酯膜的厚度以研究挠性的影响。进行了基于二维动力梁方程的相似性分析，以比较襟翼运动在空气和水中的气动弹性特性。基于实验结果，解释了拍击和剥离运动期间旋涡结构的演变。讨论了柔韧性对涡流形成和相互作用的一般影响。观察到，挠性会影响涡旋的行为和方向，与机翼的变形以及与镜板的相互作用有关。

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