机载巡飞弹在大空域降高弹道起点和终点会出现弹体抖动和过渡时间过长的现象。文中分析了高度连续和速度连续的两类降高方案弹道产生这种现象的物理原因,从弹道优化设计的角度提出了一种垂向加速度连续的降高弹道设计方法。该方法可在不改变控制系统复杂度的情况下,实现降高弹道的平稳快速过渡,并减小降高段末端的高度冲出量。弹道仿真结果表明,该方法改进效果明显,可以为机载巡飞弹及其他类似弹药的弹道设计提供参考。

At the beginning and ending points of large-space height descent trajectory, airborne loitering munitions will oscillate severely and the transition time lasts too long. By researching the height-continuous and the velocity-continuous project trajectory, the physical reasons of those phenomena were analyzed. A novel trajectory for height descent with vertical acceleration being continuous was designed based on trajectory optimization. This height descent project trajectory can realize smooth and quick transition between different trajectories without changing the control system, and it also reduces height overshooting of the loitering munitions. An example was given, validating the effect of this trajectory design method, and it will provide reference for trajectory design of airborne loitering munitions and other similar munitions.