地效翼空气动力风洞试验

为深入研究地面效应机理及地面附近粘性流动对地效翼空气动力的影响,在同济大学上海地面交通工具风洞中心的空气动力-气动声学风洞内对地效翼模型进行了风洞吹风试验.风洞试验中利用移动带路面模拟系统模拟了机翼和地面的相对运动;通过改变地效翼展长、装配端板,研究了地效翼的三维效应和端板对空气动力的影响;分析了地效翼的失速特性及其影响因素.通过地效翼风洞试验研究揭示了地面效应机理及移动地面模拟的重要性,并深入分析了地效翼空气动力特性,为地效飞行器空气动力设计和研究提供了参考.

Wind Tunnel Test Studies of Wing in Ground Effect Aerodynamics

Deep study on ground effect mechanism and aerodynamic characteristics of wing in ground effect was carried out based on wind tunnel test in Aerodynamics/Aero acoustic Wind Tunnel of Shanghai Automotive Wind Tunnel Center of Tongji University. Relative motion between wing and ground in cruising was simulated by the moving belt system; span dominated ground effect was systematically investigated by changing span or taking account the endplates; stall characteristics of wing in ground effect was also discussed for different flight height and span. In the study, mechanism of ground effect was further revealed, importance of moving ground simulation was disclosed and aerodynamics of wing in ground effect was comprehensively analyzed through the experimental studies, which provide important reference for aerodynamic design and research of wind in ground(WIG) craft.