脉冲修正弹药横向修正能力研究

以某脉冲修正迫击炮弹为研究对象，分析了矩形脉冲推力模型的推力效率与发动机工作时间和转速的关系；并基于小扰动理论分析了发动机冲量与攻角最大幅值的关系。在弹体稳定情况下，脉冲冲量越大，弹丸产生速度越大，修正效果越好。最后考虑出炮口速度误差、射角误差和弹重误差，用蒙特卡洛法模拟打靶，得出了异冲量和同冲量两种方案的平均横向修正距离分别为385.8 m和335.9 m；同等工作情况下，异冲量方案横向修正距离优于同冲量方案。

Analysis of the Lateral Correction Capability of Pulse Correction Projectile

It took a pulse correction mortar shell as the research object. The relationship between rectangular pulse thrust model efficiency and engine working time and rotating speed was analyzed. And based on small perturbation theory, the relationship between the engine impulse and the maximum amplitude of the attack angle was analyzed. In case of projectile stability,the larger the engine impulse, the faster the speed of projectile is and the better the trajectory correction is. Finally,considering muzzle velocity,firing angle and projectile weight,we simulated target practice by Monte Carlo method,and we obtained that the average lateral correction distance of different pulse impulse engines program is 385. 8 m, however,another program is 335. 9 m. Under the same working conditions,the projectile with different pulse impulse engines has better lateral correction capability than which with same pulse impulse engines.