飞行参数对导弹发动机羽流的影响

对导弹发动机在不同飞行条件下的羽流进行数值模拟，得到飞行参数对导弹发动机羽流的影响规律，为载机挂点设计和制定发射边界提供了相应的理论依据。计算结果表明，在相同飞行马赫数下随飞行高度的增加，导弹羽流边界随之增加：在相同飞行高度下随飞行马赫数的增加，导弹羽流边界随之减小，同时导弹羽流结构也随飞行奈件变化而有很大的不同。数值模拟与地面试验结果一致，计算具有较高的可信度。

Effect of flight status parameters on missile motor plume

The missile motor plume was numerically simulated under different flight conditions, and the laws of effect of flight status parameters on missile motor plume were obtained so as to give a theoretical reference to designing the hitch place of fighter plane and determining the launch boundary. The results show that plume boundary augment with increase of flight altitude at the same flight Mach number, and reduce with the increase of flight Mach number at the same flight altitude. At the same time, the plume structures change greatly with the variety of flight status parameters. The numerical simulation results agree well with the ground testing results, and the numerical simulation is creditable.