利用显式动力学方法计算了某火箭弹与定向管的弹管碰撞问题,得到了定向钮和前中后3个定心部与定向管的碰撞力；利用快速傅立叶变换计算出碰撞力的频谱,并与某火箭弹发射装置的固有频率进行对比分析,说明了火箭炮系统设计合理；对火箭弹发射系统进行了动力学计算,得出了前后2组弹发射的最小时间间隔和初始扰动参数.%The calculation is made for the impact movement between the rocket projectile and direction tube by explicit dynamic, and the impact forces between the guide pin, front, middle and rear centering parts and the directional tube are obtained. The frequency spectrum of impact forces is calculated by using fast Fourier transform and compared with the inherent frequency of some rocket gun launcher,it is concluded that the design of this multiple rockets gun system is rational. The dynamic calculation is made for the rocket gun launcher system and the minimum launch interval between the two units of firings and the initial disturbance parameters are obtained.
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