某高射速航炮供弹系统数值仿真分析

Numerical Simulation Analysis of Certain Type High Firing Rate Aircraft Gun Shell Feeding System

针对一种高射速航炮供弹系统工作时因卡弹造成航炮停射的现象,研究其故障原因。分析工作时局部弹带运动特性,基于复杂铰链连接的多刚体弹带模型编程建立数值仿真模型,仿真得到弹带尾部炮弹运动规律,与真实实验数据基本吻合。仿真分析结果表明:弹带尾部炮弹运动过程中垂直于运动方向的加速度过大,尾部炮弹存在摆尾现象导致供弹阻力增大,从而造成系统卡弹故障。

Aiming at the phenomenon that the feeding system of a high firing rate aircraft gun stops firing due to the shell jamming, the causes of the failure are researched. Based on the multi-rigid-body belt model with complex hinge connection, the numerical simulation model was established by programming, and the movement law of the projectile at the tail of the belt was obtained by simulation, which was basically consistent with the real experimental data. Further simulation results show that the acceleration perpendicular to the movement direction is too large in the movement process of the tail shell of the belt, and the tail shell has the phenomenon of tail swing, which increases the feeding resistance an d causes the system jamming failure.