为了分析内装式空中发射运载火箭在箭体脱离载机后的气动特性。应用CFD软件进行了运载火箭三维湍流流场结构分析,在此基础上就火箭箭体的迎角变化对流场结构的影响进行了数值模拟。通过数值模拟得到了不同迎角时运载火箭的气动参数、箭体的压力云图、流场结构;绘制了火箭的力与力矩系数曲线,确定了流场在火箭扰流时的特征。通过分析,明确了火箭气动特性对空中发射系统设计的影响。

To analyze the aerodynamic characteristics of internally carried air-launched launch vehicle's body after separating from aerial carrier, the 3-D turbulence field of launch vehicle was simulated and then numerical analysis was made to predict the influences of the angle of attack on launch vehicle. Aerodynamic parameters, pressure cloud maps of rocker's body and formation of flow flied with different angle of attack could be got. Force and moment coefficient curves were protracted, characteristics of flow field that disturbed by the rocket were determined. All the results show the effect of the aerodynamic characteristics of vehicle on air-launched system design.