炮口速度误差修正系数的理论推导与应用

Deduction and Application of Muzzle Velocity Error Modifying Coefficients

为对炮口速度进行实时预测,提出了炮口速度误差修正系数理论推导方法.基于拉格朗日假定的内弹道模型,从炮口速度的解析解出发,通过理论推导,给出了影响炮口速度参量敏感系数的理论表达式和综合表达式.以某130 mm和100 mm火炮为例,计算了装药量、药温、弹丸质量和药室容积对炮口速度误差的修正系数,所得理论计算值与靶场试验值吻合较好.所提出的关于炮口速度的修正方法,包括模型选择、敏感参量的确定及其推导的公式,对炮口速度的实时预测具有理论意义和实用价值.

In order to predict real-time muzzle velocity, a theory method of error modifying coefficients of muzzle velocity was brought forward. Based on the Lagrange interior ballistics and the velocity parse result, each parameter coefficient expression and velocity error expression were presented through theory deduction. The modifying coefficients of several parameters such as charge mass, charge temperature, projectile mass and chamber volume, were calculated for 130 mm and 100 mm gun. The results are in accord with experimental results. The modifying method of muzzle velocity, including choosing model, ascertaining sensitive parameters and inferential formulas, is significant and valuable to real-time predicting muzzle velocity.