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本文针对一种设计弹速为８ｋｍ／ｓ的新型非火药驱动二级轻气炮，在调炮中所遇到的发射参数的选择与优化，高压段及炮管的烧蚀与预防等实际问题，建立了该炮发射过程的内弹道物理模型；运用数值模拟和优化的方法找到了各发射参数影响弹速的规律、确定了最优发射参数组合，得到了在不同发射条件下高压段及炮管内气流和壁面温度场随时间的变化情况；还计算了高压段和炮管的烧蚀量．计算结果表明，在高压段和炮管的连接处烧蚀最为严重．
In this paper, a practical design of a new type of non-powder propeller driven two-stage light gas gun with 8mm / s spring rate, practical parameters such as selection and optimization of emission parameters encountered in gun steering, ablation and prevention of high pressure section and barrel, , The internal ballistic physical model of the gun firing process was established. The law of the impact of each firing parameter on the projectile speed was found by numerical simulation and optimization method, and the optimal combination of firing parameters was determined. Under the different firing conditions, Tube air flow and wall temperature field over time changes; also calculated the high pressure section and barrel ablation. The calculation results show that the most severe ablation occurred at the connection between the high-pressure section and the barrel.