Discovering the flight autostabilizer of fruit flies by inducing aerial stumbles
Discovering the flight autostabilizer of fruit flies by inducing aerial stumbles
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DOI：
10.1073/pnas.1000615107
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发表时间：
2010-03-16
影响因子：
11.1
通讯作者：
Cohen, Itai
中科院分区：
文献类型：
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作者：
Ristroph, Leif;Bergou, Attila J.;Cohen, Itai
就像莱特兄弟实现控制以实现稳定的飞机飞行一样，飞行昆虫也进化出了确保从飞行干扰中恢复的行为策略。对被拴系和解剖的昆虫进行的开创性研究表明，感觉、神经和肌肉骨骼系统在飞行控制中起着重要作用。然而，这样的研究，不能产生昆虫飞行稳定性的综合模型，因为它们没有将这些系统与自由飞行空气动力学的相互作用。我们直接调查控制和稳定性，通过应用扭矩脉冲自由飞行的果蝇（果蝇）和测量他们的行为反应。高速视频和一种新的运动跟踪方法捕捉到了空中的“绊倒”，我们发现苍蝇对轻微干扰的反应是准确地返回到它们原来的方向。这些昆虫利用稳定的空气动力学影响和主动扭矩产生来恢复它们的航向，
Just as the Wright brothers implemented controls to achieve stable airplane flight, flying insects have evolved behavioral strategies that ensure recovery from flight disturbances. Pioneering studies performed on tethered and dissected insects demonstrate that the sensory, neurological, and musculoskeletal systems play important roles in flight control. Such studies, however, cannot produce an integrative model of insect flight stability because they do not incorporate the interaction of these systems with free-flight aerodynamics. We directly investigate control and stability through the application of torque impulses to freely flying fruit flies (Drosophila melanogaster) and measurement of their behavioral response. High-speed video and a new motion tracking method capture the aerial "stumble," and we discover that flies respond to gentle disturbances by accurately returning to their original orientation. These insects take advantage of a stabilizing aerodynamic influence and active torque generation to recover their heading to within 2 in