横列式双旋翼直升机旋翼对机翼的干扰分析

针对横列式双旋翼直升机旋翼下洗流对机翼的气动干扰影响，建立了旋翼对机翼的干扰计算模型。该模型首先基于万向铰旋翼建立了挥舞运动方程，以得到桨叶挥舞角，然后对桨叶采用非定常Beddoes翼型模型计算气动力和力矩，以考虑桨叶大负扭转带来的失速影响，接着引入动力人流模型获得旋翼处的诱导速度。最后运用经典方法，以XV-15倾转旋翼机为算例，计算了配平状态下旋翼对机翼的向下载荷，并与GTRS模型数据进行了对比，验证了计算模型的合理性。

Analysis of Rotor Interaction to Wing for Side-by-Side Rotor Helicopter

A mathematical model for calculating rotor interaction to wing for side-by-side rotor heli- copter was established according to the aerodynamic interaction effect of the downwash flow on the wing. In the model , the flapping angle was calculated by establishing motion equations of universal- hinged rotor. The calculation of blade aerodynamics was based on an unsteady airfoil model-Beddoes model to consider the stall effect due to the large twist angle. The Pitt-Peters dynamic inflow model was introduced into the calculation of induced velocities across rotor. The XV - 15 tilt-rotor model was taken as examples to calculate the wing download of the rotor in trimmed state and compared with the results of GTRS model. The analytical results show that the mathematical model is reasonable.