涵道共轴双旋翼空气动力学特性分析  

Aerodynamic Characteristics of Ducted Co-axial Rotor

作　　者：杨加明[1] 戴良忠[1] 丛伟[1] 

机构地区：[1]南昌航空大学飞行器工程学院,南昌330063

出　　处：《弹箭与制导学报》2013年第3期126-128,132,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(11102079);南昌航空大学无损检测技术教育部重点实验室基金(ZD201129006)资助

摘　　要：利用数值模拟对涵道共轴双旋翼的空气动力学特性进行研究。探讨在涵道的影响下,双旋翼距离的变化对上下旋翼拉力和扭矩的影响。通过与共轴双旋翼的对比确定涵道共轴双旋翼产生拉力的机理并分析涵道本体对共轴双旋翼气动特性的影响。数值结果表明:随着旋翼间距的增大,开始时上旋翼拉力大于下旋翼拉力,后来发生逆转。最后计算了上旋翼拉力占总拉力比值的变化关系。The aerodynamic characteristics of ducted coaxial rotor were analyzed based on the numerical simulation method.The influence of ducted body on aerodynamic characteristics of the ducted coaxial rotor was discussed and also the influence of coaxial rotor spacing was investigated on lift and torque acquired by rotors above and below.The mechanism of lift produced by the ducted isolated coaxial rotor was determined by comparison of difference between ducted coaxial rotor and coaxial rotor.Numerical results show that the lift of rotor above is greater than that of rotor below at first,but then it becomes reverse as the rotor spacing is growing.The curves of ratio of lift attained by the rotor above to total tension are finally established.

关 键 词：涵道共轴双旋翼 空气动力学 数值模拟 拉力 扭矩 

分 类 号：V211.45[航空宇航科学与技术—航空宇航推进理论与工程]