喷管高效膛口制退器对机枪射击性能的影响

在半开腔膛口制退器基础上进行改进,提出喷管高效膛口制退器的概念,在半开腔膛口制退器两侧引出可水平向后的拉瓦尔喷管,利用火药燃气通过喷管气流的反推作用达到减后坐效果,通过编程进行内弹道计算。运用刚柔耦合动力学理论,对安装喷管高效膛口制退器车载转管机枪系统建立动力学模型,进行动力学仿真计算。计算结果表明,安装喷管高效膛口制退器后,机枪后坐力、后坐位移、膛口角位移和弹丸出膛口时角位移均得到减小,提高了机枪的射击性能。

Influence of Nozzle High Efficiency Muzzle Brake on Firing Performance of Gun

Base on the half-open muzzle brake, a nozzle high-efficiency muzzle brake is designed. Draw out the level backwards Laval nozzle on two sides of the half-open muzzle brake, and use the high-pressure gas in chamber to achieve low recoil force, and compute interior ballistic trajectory. Base on the rigid-flexible coupling dynamic theory, the dynamic model of vehicle Gatling gun with nozzle high efficiency muzzle brake are made, and the numerical simulation is computed. The results show that the firing performance of gun system is improved when the recoil force, recoil displacement, muzzle angular displacement and projectile displacement decrease.