共轴式双旋翼尾迹形态的水洞实验研究  

Experimental Investigation of Coaxial Rotor Wake

作　　者：李洪昌[1] 邓彦敏[1] 

机构地区：[1]北京航空航天大学,北京100083

出　　处：《飞机设计》2004年第2期1-5,共5页Aircraft Design

摘　　要：通过对单旋翼和共轴式双旋翼在水洞中的对比实验 ,研究了在悬停和以不同速度前飞时 ,共轴式双旋翼和单旋翼尾迹形态的共性与区别 ,着重研究了在不同前进比时共轴式双旋翼尾迹边界的形态。实验结果表明 ,水洞实验所得到的旋翼尾迹形态与在空气中实验所得的结果相吻合 ,水洞实验能真实的反映直升机旋翼尾迹的实际情况 。The wake geometry of coaxial rotor and single rotor in hover and in level flight was investigated in the course of water tunnel experiment , and the wake boundary of a coaxial rotor for different advance ratios were investigated as an emphasis . A special model was designed for the experiment and the results of experiment clearly demonstrate the consistency of water tunnel experiment and wind tunnel experiment. In virtues of its high definition and satisfactory stability , water tunnel experiment is an effective means for investigation of rotor wake .

关 键 词：直升机旋翼 尾迹 水洞实验 悬停 显示 实际 形态 对比实验 情况 区别 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计] V211