膨胀波枪炮发射性性能若干影响因素的研究

膨胀波枪炮利用延时打开膛尾的方法实现了在不降低弹丸初速的前提下大幅度减小枪炮后坐的目的。提出了膨胀波枪炮发射过程的四阶段物理模型，采用准一维准两相流理论建立了膨胀波枪炮发射过程的动力学模型，以14.5 mm膨胀波弹道枪为例，计算并分析了膛尾打开时间、装药量、药室容积、身管长度、弹丸质量以及尾喷管长度、张角等参数对膨胀波枪炮的减后坐效率、弹丸初速等发射性能的影响规律，并提出了一种崭新的利用调节开尾时间来控制膨胀波枪炮初速和射速的技术方案。

Study of Influence Factors on Launching Performance of Rarefaction Wave Gun

The newly developed rarefaction wave gun (RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the brcech. The four-stage physical model of RAVEN was put forward using quasi one- dimensional quasi two-pnase flow theory. Taking a 14.5 mm rarefaction wave test gun as the computing instance, tke influences of such parameters on recoil reduction efnciency and muzzle velocity of RAVEN were calculated and ana?lyzed, as venting time of the breech, charge mass, chamber volume, barrel length, projectile mass and length and expanding angle of the nozzle. Besides a new way of modiiying the muzzle velocity and fir?ing rate of RAVEJN was invented.