为了研究推力偏心对精确制导火箭弹弹道的影响,通过对推力偏心的几何分析,建立了推力偏心的数学模型。采用蒙特卡洛法对火箭弹进行射击仿真实验。在推力偏心影响下,通过调整射角分别得到了在三个射角下主动段弹道散布情况,证明射角对距离散布较大;进行了燃气推力偏心和几何推力偏心对弹道散布的影响仿真,证明燃气推力偏心对弹丸的方向散布影响较大;进行了推力偏心对全弹道散布的影响仿真,证明全弹道散布超过了末制导的捕获域。

To study the influence of thrust misalignment on trajectory of precision guided rocket, the thrust misalignment was geometrically analyzed, and the math model was built. The shooting test was done by Monte Carlo. Three results of powered course dispersion were obtained by changing angle of fire under the effect of thrust misalignment, and it is proved that angle of fire has bad effect on distance dispersion. The dispersion of powered course was simulated under the effect of gas misalignment and geometry misalignment, and the result proves thrust misalignment has bad effect on direction dispersion. The dispersion of final trajectory was obtained, and the result proves that dispersion scope is larger than the capture territory.