舰载导弹发射数值模拟与点火时机研究

摘要

In order to research the launch problem of ship-based missile, the virtual prototype technology was brought in to build the multi-body dynamic model,and the ship motion in the sea was simulated by defining the point movement. The launch under different condition was simulated by lime discrete sampling. The launch numerical experiment was conducted under different thrust, launch site and sea condition. The results show that the outlet pitch and yaw angular velocities present periodic fluctuation under different ignition time, but the variation of roll velocity is random. By contrast, larger thrust and better sea condition are conducive to launch. The missile outlet synthesis angular velocity is approximately periodic changing with ship motion, and the bad and suitable launch window exists alternately.%采用数值模拟方法研究舰载导弹的发射问题.基于虚拟样机技术建立了舰载导弹发射系统的多体动力学模型,通过定义运动模拟了舰船在海浪中的恶劣运动,采用时间离散采样方法模拟了舰船不同状态下的发射,针对不同推力、发射点及海况因素进行了发射数值仿真试验.研究结果表明,采样点火下发射导弹出筒的俯仰和偏航角速度出现周期性波动,而滚转角速度呈随机变化；使用较大推力和选择低级海况更有利于发射；导弹出筒角速度的模随舰船运动发生近似不等幅周期变化,恶劣与可行发射窗口交替存在.