针对导弹发动机燃气流对联装架上发射箱前盖的冲击影响问题,建立导弹滑离参数计算模型和三维流场模型。采用CFD方法和UDF动网格,针对导弹从下箱滑离和上箱滑离两种工况下,分析燃气流对各前盖表面压力分布及变化规律,进一步通过改变发射箱前、后定向件位置,分析发射箱导轨对多联装发射箱前盖的冲击影响。文中的仿真结果对倾斜发射装置工程优化设计具有一定的参考价值。

In order to solve the impact of the inclined launching missile jet flow on the front covers of launch canisters, the model of trajectory parameters and fluid field is built. To two working conditions are separately calculated including launching from the upper canister and the lower canister, the computioanal fluid dynamics and the technology of dynamic mesh is used to simulate the pressure distribution of every launch canister cover and the pressure curve. In addtonal to analyse to the impact of missile jet flow by changing the front mounting backward or the behind mounting forward. The simulaton result can provide some reference value to optimize the missile vehicular launcher.