【摘要】 利用蒙特卡洛随机分析方法,对燃气蒸汽式发射装置内弹道参数的随机分布特性进行了研究。在大量试验数据的基础上,提出了采用统计方式对模型进行一致性检验来代替传统的模型校验方法。结果表明,所采用的内弹道计算模型在置信度γ=0.95下是可信的。内弹道随机分析结果表明,在现有状态下,导弹出筒速度的精度范围无法满足±2 m/s(概率为0.997 4)的设计指标要求。根据参数敏感性分析结果,提出了通过控制装药出厂燃速、装药初温和冷却水温的随机分布规律来保证出筒速度满足设计要求的改进方案。更多还原

【Abstract】 The stochastic distribution of the interior ballistics parameters proposed of the combustion gas-steam launching equipment was studied with Monte-Carlo method. The statistical method was to test the interior ballistics trajectory mode instead of the traditional tect method based on lots of experiment data. The results show that the interior ballistics trajectory mode is believable on γ = 0. 95. Random analysis shows that the velocity precision can’t satisfy the target about ± 2m/s( probability was 0. 997 4) at present condition. The impoved scheme of ensuring the velocity precision satisfy the target through controlling the stochastic distribution of the burning velocity of the grain,the initial temperature of the grain and the temperature of cooling water was proposed on the basis of the parameters sensitivity analysis.更多还原