随行装药的响应面分析

Analysis on Response Surface of Traveling Charge

研究目的是优选出30 mm火炮随行装药结构的点火延迟时间、随行药燃速和随行药量三者的优化组合,保证在最大膛压不超出指标的条件下获得较高的弹丸初速。采用固体随行装药零维内弹道模型编写程序求模型数值解,在此基础上利用响应面法在点火时间1.71-1.83 ms,随行药压力全冲量在20-100 k Pa·s,随行药量25-35 g范围内分析三种因素对弹丸初速和最大膛压的影响以及这些影响因素之间的交互作用,求出了局部最优解并用模拟实验验证。结果表明：响应面法的预测值与模拟实验值吻合较好,通过响应面法得到的随行装药弹丸初速比相同膛压水平下非优化实验的结果提高约5%。

The purpose of this study is to select the optimization results of delay time,burning rate and charge of 30 mm traveling charge structure,in order to have a higher muzzle velocity of projectile under the condition of maximum bore pressure. According to the adoptive traveling charge scheme in 30 mm cannon,a zero dimension interior ballistic model of solid traveling charge was used and a program for numerical solution was wrote,based on which the effect and the interaction between the operation factors were systematically discussed and the process was optimized by RSM under the following condition： the delay time should be 1. 71 - 1. 83 ms,and the impulse should be 20 - 100 k Pa·s,and the charge should be 25 - 35 g. Additional experiments were performed to check the model,which shows that the predicted values agree well with the experimental results,and the velocity improved almost 5% under the optimized operation conditions by RSM.