针对湿微下击暴流特性会对火炮射程、侧偏等参数产生一定的偏差,对火炮的射击精度影响较大问题,以155 mm火炮杀爆弹为研究对象,基于涡环原理与流体力学建立微下击暴流与雨滴运动模型,并融合为适用于弹道分析计算的湿微下击暴流模型,将湿微下击暴流模型与火炮6自由度弹道方程结合,仿真并分析不同初始涡环中心诱导速度对火炮平射与曲射两种发射方式射击精度的影响。实验结果表明:对于低伸弹道,外弹道侧偏与偏航角增加比例随着初始中心涡环诱导速度的增加而减小;而对于远距离射击,火炮射程随着初始涡环中心诱导速度的增大而减小,严重影响火炮的射击精度与杀伤效果。

The characteristics of the micro-downburst accompanied with rain are complicated, which will produce certain deviations on the artillery range, side deflection and other parameters, and have a great influence on the shooting accuracy of the artillery. With 155 mm artillery shells killed as the research object, and fluid mechanics to establish on the basis of the principle of vortex ring under micro-downburst and raindrop movement model and fused into a micro-downburst accompanied with rain model suitable for ballistic analysis and calculation, and will strike suddenly and violently under micro-downburst accompanied with rain model combined with artillery 6 degrees of freedom ballistic equation, the simulation and analysis of different initial vortex ring center induced velocity of cannon shot and flexure of two kinds of means of transmission the influence of firing accuracy. Experimental results show that for the trajectory with low extension, the proportion of lateral deflection and yaw angle increase decreases with the increase of the initial central vortex ring induced velocity. When firing at a long distance, the artillery range decreases with the increase of the initial center induced velocity, which seriously affects the shooting accuracy and killing effect of the artillery.