悬浮弹旋翼结构参数对其气动力的影响分析

针对现有文献在小型旋翼的气动力研究上的不足,建立一种旋翼升力与阻力的理论计算模型.基于旋翼叶素理论和矩形桨叶的拉力与阻力扭矩理论计算,采用CFD仿真的方法对其流场进行仿真,利用fluent软件建立旋翼流场的多参考系模型,通过理论计算和试验相结合的方法对其气动力CFD仿真结果进行对比分析,并计算不同结构参数的旋翼模型,得到了包括桨叶数目、桨叶翼型、旋翼半径、桨叶宽度和桨叶安装角的结构参数对其气动力的影响.仿真结果证明了该CFD方法用于小型旋翼流场仿真的可行性,为悬浮弹悬浮装置的设计中旋翼结构参数的选择提供了依据.

Impact Analysis of Suspension Bullets Rotors Structure Parameters to the Aerodynamic Force

For lack of existing literature on the aerodynamic study of a small rotor, this paper established a theoretical model of rotors lift and drag simulation. Based on the rotors blade element theory and rectangular blade lift and drag torque theoretical calculationsusing CFD simulation method to simulate its flow field. Using FLUENT software to Establish multiple systems model of rotor flow field. Combined theoretical calculation and experiment phase to compare the aerodynamic simulation results of CFD to prove the feasibility of this method to study rotors flow field. Calculated the different structural parameters of the rotor model, obtained the influence of structural parameters including the number of blades, blades airfoil, rotors radius, blades mounting angle and blade width to rotors aerodynamic characteristics. The paper proved the feasibility of this CFD simulation method for small rotorcraft flow field and provided an evidence for the rotors structure parameters selection of suspended ammunition design.