针对火箭上浮水雷弹道散布过大问题,系统分析影响上浮弹道散布的扰动因素,建立上浮弹道散布故障分析树,通过数据对比、理论分析、仿真计算等手段,透析影响上浮弹道散布的根本原因,为实际工程中减小上浮弹道散布、提高上浮运动稳定性提供依据。研究结果表明:对于无控上浮弹道,初始发射干扰、雷体表面不对称和火箭发动机推力偏心是影响上浮弹道散布的主要因素。 In order to solve the problem of excessive dispersion of rocket launchers, a systematic analysis of the disturbing factors that affect the dispersion of floating lanes and the establishment of a floating failure analysis tree of floating lanes are carried out. Through data comparison, theoretical analysis and simulation calculation, The actual project to reduce the floating ballistic spread, improve the stability of floating movement provide the basis. The results show that for the uncontrolled floating trajectory, the initial launch disturbance, the surface asymmetry of the lightning body and the thrust eccentricity of the rocket engine are the main factors affecting the dispersion of the floating trajectory.