仿雨燕机翼柔性对纵向气动特性的影响  

Study on the effect of the flexibility of common swift's wing on longitudinal aerodynamics

作　　者：展京霞[1,2] 王晋军[1] 

机构地区：[1]北京航空航天大学流体力学研究所,北京100091 [2]成都飞机设计研究所,成都610041

出　　处：《实验流体力学》2010年第2期1-4,共4页Journal of Experiments in Fluid Mechanics

基　　金：国家杰出青年科学基金资助项目(10425207)

摘　　要：通过仿雨燕机翼的低速风洞测力实验,分析了以展向弯度变化为表现形式的柔性变形对大展弦比机翼纵向气动特性的影响。实验结果表明,这种柔性变形具有增升减阻的效果,可以增大仿雨燕机翼的最大升阻比,减缓失速,能够显著改善大展弦比机翼的纵向气动特性,对揭示鸟类的飞行机理和微型飞行器的设计具有重要的指导意义。Force measurement experiment was conducted in a low speed wind tunnel to investigate the effect of the flexibility of common swift＇s wing on the longitudinal aerodynamics of wing with large aspect ratio. The result shows that the change of spanwise camber due to wing＇s flexibility enhances lift and reduces drag, increases the maximum lift-to-drag ratio and delays stall. The wing flexibility could improve the longitudinal aerodynamics of large-aspect-ratio wing, which is significant to birds＇ flight and the design of micro air vehicle.

关 键 词：柔性机翼 雨燕 大展弦比 增升 

分 类 号：V214.11[航空宇航科学与技术—航空宇航推进理论与工程]