Experimental Investigation of Span-wise Folding Motion in Flapping Wings

摘要：

Flapping wing micro air vehicles (FMAVs) for practical application are most inspired by birds flight FMAVs flight efficiency to some extent depends on the bionic degree. Single degree flapping motion is no more satisfy the high efficiency of flight. A unique span-wise folding mechanism for flapping wing is developed to carry out the multiple degrees of freedom flapping. The aerodynamic characteristics of flapping wing applied with spanwise folding are tested in a small wind-tunnel special for MAVs. The instantaneous analysis shows that the distinction between folding wing and normal wing happens in the up-stroke process. The folding motion can notably increase the lift generated by the flapping, and reduce the power consumption in some conditions. The experiments indicate that folding up the small area of wing tip is good for maximum lift generation, appropriate restrict the folding area and folding angle can reduce the thrust and power lose. The maximum lift increment of the folding wing is 26％, with less than 4％ thrust lose.

关键词： Flapping wing MAVs (micro air vehicles) span-wise folding wind-tunnels

作者: Wang Liguang Song Bifeng Gao Guangling

作者单位: School of aeronautics, Northwestern Polytechnical University, Xian 710072, China

会议类型: 国际会议

会议名称: 2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)

会议地点: 西安

会议语种:英文

页码: 183-186

在线出版日期: 2010-09-01（万方平台首次上网日期，不代表论文的发表时间）