文献详情
Wing and body kinematics measurement and force analyses of landing in fruit flies
文献类型期刊
作者Shen, Chong[1];Sun, Mao[2]
机构
通讯作者Shen, C (reprint author), Beijing Univ Aeronaut & Astronaut, Inst Fluid Mech, Beijing, Peoples R China.
来源信息年:2018  卷:13  期:1  页码范围:016004  
期刊信息BIOINSPIRATION & BIOMIMETICS影响因子和分区  ISSN:1748-3182
关键词fruit fly; landing; body and wing kinematics; aerodynamic force; leg force
增刊正刊
摘要In this paper, we analyzed the body and wing kinematics and mechanics in fruit flies' landings on a vertical pole. By high-speed video techniques and CFD method, we exhibited the detailed process of landing as follows. A fruit fly first decelerates and enters a near-hover state approximately 25 mm away from the vertical pole, then starts approaching the pole in acceleration till one of its front-legs touches the pole (touchdown). Just before touchdown, the fly's acceleration is around 6 ms-2; at touchdown, it experiences an almost instant deceleration of several g (gravitational acceleration), approximately all of which results from the leg force. After touchdown, the fly's acceleration fluctuates about zero, and the acceleration is also mainly due to the leg force; meanwhile the aerodynamic force decreases to zero and the fly's weight is gradually shifted to legs. In this period, the fly's legs act as a compression spring, and the fly can be regarded as a legs-body oscillator. In conclusion, during landing, the fly keeps accelerating towards the target and 'impinges' on the target on its legs, and the leg force, not aerodynamic force, is used to stop the insect's motion.
收录情况SCIE(WOS:000417527900004)  PubMed(29027521)  
所属部门航空科学与工程学院
DOI10.1088/1748-3190/aa934b
百度学术Wing and body kinematics measurement and force analyses of landing in fruit flies
语言外文
人气指数216
下载次数1
浏览次数215
基金National Natural Science Foundation of China [11232002, 11672023]
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Shen, Chong;Sun, Mao.ACTA MECHANICA SINICA.2014,30(6),828-838.

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