针对翼吊发动机高空工作时受大气紊流影响这一现象,基于机翼气动弹性力学和转子动力学理论,采用Dryden紊流模型作为大气速度模型,建立了翼吊发动机转子系统在大气紊流下的动力学模型,运用虚拟激励法对模型进行数值计算.结果表明:转子系统中各转盘站的位移响应功率谱密度变化趋势与大气紊流速度功率谱密度变化趋势基本相似,但在固有频率处会出现位移响应强度峰值;当角频率大于100rad/s时,大气紊流引起的位移响应强度随着角频率的增大而减小,并且不可忽视转子系统本身特性对位移响应强度的影响. Aiming at the phenomenon that wing crane engine is affected by atmospheric turbulence at high altitude, based on wing aeroelastic mechanics and rotor dynamics theory, the Dryden turbulence model is adopted as the atmospheric velocity model, and the wing rotor engine rotor system is established under atmospheric turbulence The results show that the tendency of displacement PSDs in rotor system is almost the same as that of atmospheric turbulence power spectral density, When the angular frequency is greater than 100 rad / s, the displacement response intensity caused by atmospheric turbulence decreases with the increase of the angular frequency, and the influence of the rotor system itself on the displacement response strength can not be neglected.