同心筒发射的集中参数模型及应用

Lumped parameter model for concentric canister launcher

导弹在同心筒结构中的发射涉及复杂的燃气流动和多种载荷共同作用。为了从理论上分析发射筒结构、发动机参数等设计变量与发射弹道特性之间的关联关系,对同心筒结构中的燃气流动特征进行了深入分析。在此基础上,结合燃气流动各区域的典型特征、气体流动基本方程、弹体动力学方程和水下气泡运动方程,建立可用于大气和水下环境的同心筒发射数值分析集中参数模型。利用该模型进行的示例分析表明,集中参数模型反映了同心筒发射过程中的燃气流动特性,能便捷方便地分析多种设计参数与发射弹道之间的相互关系,可为同心筒发射装置的方案设计和理论分析提供依据。

The missile launching in concentric canister launcher（CCL） is a typical process affected by exhausted jet flow and some different forces.For analyzing the relation between CCL＇s design parameters and the launching trajectory,a lumped parameter model was proposed to simulate the launching process.Based on the typical features of jet flow in CCL,the fundamental equation of gas flow,the dynamic model of missile and Rayleigh-Plesset equation were used in this model.The numerical tests show that the lumped parameter model can simulate the typical attributes of gas flow and the trajectory during missile launching via CCL.Furthermore,the relation between design parameters and launching trajectory can be analyzed easily by this model,which may provide reference for design of concentric canister launcher.