Insects are the main source of inspiration for flapping-wing micro air vehicles (FWMAVs). They frequently encounter wind gust perturbations in natural environments, and effectively cope with these perturbations. Here, we investigated the rapid gust response of flies to instruct the gust stability design of FWMAVs. A novel method to produce impulsive wind gusts that lasted less than 30 ms was designed to observe flies’ rapid responses. Headwind gust perturbations were imposed on 14 tethered fruit flies, and the corresponding wing motions during perturbations were recorded by three high-speed cameras. The numerical simulation method was then applied to analyze aerodynamic forces and moments induced by the changes in wing kinematics. Results shows that flies mainly utilize three strategies against headwind gust perturbations, including decreasing the magnitude of stroke positional angle at ventral stroke reversal, delayed rotation and making the deviation angles in upstroke and dow...

中文翻译：

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逆风阵风扰动期间果蝇的机翼快速响应和空气动力学。

昆虫是扑翼微型飞行器 (FWMAV) 的主要灵感来源。他们在自然环境中经常遇到阵风扰动，并有效地应对这些扰动。在这里，我们研究了苍蝇的快速阵风响应，以指导 FWMAV 的阵风稳定性设计。一种产生持续时间不到 30 毫秒的脉冲阵风的新方法旨在观察苍蝇的快速反应。对 14 只系绳果蝇施加了逆风阵风扰动，扰动期间相应的机翼运动由三台高速摄像机记录。然后应用数值模拟方法分析由机翼运动学变化引起的空气动力和力矩。结果表明，苍蝇主要利用三种策略来对抗逆风阵风扰动，