水压式垂直发射装置内弹道建模与分析

Modeling and analyzing the interior trajectory of hydraulic submersible vertical missile launchers

为研究水压式潜载垂直发射装置的发射过程,本文建立了一类弹射装置的内弹道数学模型。将环境水介质考虑为弱可压缩流体,基于准一维流动假设和平板间隙流动的动量方程,提出了一种求解瞬态环形缝隙流动的方法,并在此基础上结合弹体动力学、运动学关系,建立了垂直弹射装置的准一维内弹道模型。弹道模型的计算结果与计算流体力学仿真结果相比,具有良好一致性,这表明本文的模型是有效的。同时,本文建立的内弹道数学模型能够可解决已有模型无法求解两端压差较大的瞬态环缝流等问题。

A mathematical interior ballistic model was established to study the launch process of hydraulic submersible vertical missile launchers.A method based on the one-dimensional flow hypothesis and the momentum equation of gap flow between two parallel plates was used to solve transient annular gap flow.A quasi-one-dimensional interior ballistic model of vertical launchers was established by combining the dynamics and kinematics of projectile bodies.The resulting model was in good agreement with computational fluid dynamics simulations.This proposed model addresses issues in transient annular gap flows with large pressure differences between two ends,which are difficult for existing models to handle.