Remote radio control of insect flight reveals why beetles lift their legs in flight while other insects tightly fold
Remote radio control of insect flight reveals why beetles lift their legs in flight while other insects tightly fold
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DOI：
10.1088/1748-3190/abe138
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发表时间：
2021-05-01
影响因子：
3.4
通讯作者：
Sato, Hirotaka
中科院分区：
文献类型：
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作者：
Kosaka, Takumi;Gan, Jia Hui;Sato, Hirotaka
在微型飞行器的研究和开发中，了解和模拟昆虫的飞行机理是一条可行的前进道路。虽然对苍蝇和蜻蜓等昆虫的飞行机制进行了研究，但对能够携带更大载荷的甲虫的研究有限。在这里，我们阐明了甲虫的腿中的作用，在减弱和停止的翅拍。我们从解剖学上证实了中腿和鞘翅之间的联系。我们还进一步阐明了哪对腿参与了翼振衰减机制，最后通过远程腿部肌肉刺激演示了自由飞行控制。使用高速摄像机观察多次着陆显示，翼拍在它们的中腿降低后立即停止。此外，降低中腿的行动减弱，往往停止翅拍。设计了一种可安装在甲虫身上的微型远程刺激装置（背包），并用于自由飞行演示。在自由飞行的甲虫远程诱导降低（摆动下来）通过电刺激的每一对腿，他们被发现失去显着的高度只有当中腿受到刺激。因此，本研究的结果显示，摆动下的中腿在甲虫翅拍停止发挥了重要作用。在未来，我们的研究结果对翼振衰减和停止机制，预计将有助于设计仿生微型飞行器。
In the research and development of micro air vehicles, understanding and imitating the flight mechanism of insects presents a viable way of progressing forward. While research is being conducted on the flight mechanism of insects such as flies and dragonflies, research on beetles that can carry larger loads is limited. Here, we clarified the beetle midlegs' role in the attenuation and cessation of the wingbeat. We anatomically confirmed the connection between the midlegs and the elytra. We also further clarified which pair of legs are involved in the wingbeat attenuation mechanism, and lastly demonstrated free-flight control via remote leg muscle stimulation. Observation of multiple landings using a high-speed camera revealed that the wingbeat stopped immediately after their midlegs were lowered. Moreover, the action of lowering the midleg attenuated and often stopped the wingbeat. A miniature remote stimulation device (backpack) mountable on beetles was designed and utilized for the free-flight demonstration. Beetles in free flight were remotely induced into lowering (swing down) each leg pair via electrical stimulation, and they were found to lose significant altitude only when the midlegs were stimulated. Thus, the results of this study revealed that swinging down of the midlegs played a significant role in beetle wingbeat cessation. In the future, our findings on the wingbeat attenuation and cessation mechanism are expected to be helpful in designing bioinspired micro air vehicles.