制导系统启控时刻对火箭弹初始扰动的影响研究

The Effect of Start Time of Guidance System on Initial Desturbance of Artillery Rocket

借助 ADAMS和 MATLAB/Simu Link的接口环境建立了带制导系统的发射动力学模型。模型可综合考虑弹管间隙以及系统时变参数特性 ;进行有无制导系统的模拟对比发现 ,火箭弹离轨前启动制导系统可以适当减小火箭弹的扰动角速度 ,而且启控时刻越早 ,对火箭弹的出口姿态越有利 ;研究了制导系统启控时刻随机性对火箭弹出口角速度散布的影响 ,结果发现其影响不容忽视。

Launching dynamic model with guidance system is built by ADAMS and MATLAB/SimuLink interface environment.The launch tube interval and system time-varying parameter performance are incorporated in the model. By comparing the simulation with guidance system with the simulation without guidance system,it is found that the disturbance angular velocity of artillery rocket can be reduced by starting the guidance system before artillery rocket leaves launch tube. And the earlier start of the guidance system is favourable to the exit attitude of artillery rocket.The effect of start time randomness of guidance system on the dispersion of exit angular velocity of artillery rocket is analysed and it is found that the effect should not be ignored.