自航发射鱼雷内弹道模型与仿真研究

Modelling and Simulation of Interior Trajectory Model for Torpedo Swim-out Launching

基于对自航管内非常局限性边界条件下鱼雷受力的分析,建立了自航发射鱼雷的内弹道模型,采用试验的方法描述螺旋桨推力,根据鱼雷在变截面管内的不同运动阶段,引入控制体的概念对鱼雷附加流体阻力进行实时计算,进行了计算机仿真,通过与试验结果的比对,验证了内弹道数学模型的可信性。

Based on the analysis of forces acting on torpedo under abnormal limitation boundary condition in the swim-out torpedo tube, the interior trajectory mathematical model for torpedo swim-out launching was set up. The testing method was used to describe the push force of airscrew. The concept of control body was introduced to calculate the flow losses according to the different movement phase of torpedo in the variable section tube. The computer simulation was made. Compared with testing data, the creditability of the interior trajectory mathematical model was proved.