脉冲参数对迫击炮弹稳定性影响研究

摘要

以脉冲发动机作为修正执行机构对迫击炮弹进行弹道修正，利用六自由度脉冲修正迫击炮弹运动方程组研究脉冲参数对弹道的影响，分析了脉冲发动机冲量、点火相位、发动机安装位置轴向偏心距以及点火时间间隔对迫击炮弹飞行稳定性的影响；脉冲冲量越大，发动机安装位置离弹丸质心越远，相邻两发动机点火时间间隔越短，对弹丸的修正距离越远，同时也将引起攻角增大，弹丸稳定性降低；参考各脉冲参数的变化趋势，对脉冲发动机设计具有实际意义。%It took pulse engine as executive body to correct the trajectory of the mortar shell.By using the six-degree-of-freedom model,it researched the influence of impulse parameter on ballistics and analyzed the impact of the impulse of pulse engine,phase of ignition,distance between axis center of engine position and centroid and the interval of the ignition to mortal shell.The lager engine impulse,the lager distance between engine position and centroid,and the shorter ignition interval,the lager correction distance of projectile,and the angle of attack will be lager and the stability of the shell will be worse. Referring to the trend of impulse parameter,it has great significance of the design of pulse engine.