两种喷管气流反推装置建模与发射性能对比分析

针对单药室喷管气流反推装置减后坐效率低、弹丸速度衰减严重的问题，提出双药室喷管气流反推减后坐技术.建立包含膛内和喷管内部气流参数的大口径武器内弹道及后效期的数学模型.对喷管武器进行试验，验证文中建立的包含喷管气流问题的内弹道及后效期数学模型的正确性.对比分析采用两种减后坐装置武器的弹丸初速、喷管减后坐效率、自动机运动特征量、后坐力等发射性能参数.结果表明:采用双药室喷管气流反推减后坐技术的武器，在保证弹丸初速几乎不变的前提下可以显著提升武器减后坐效能、大幅降低武器后坐力. 

Modeling of Two Jet Gas Devices and Its Firing Efficiency Comparison

A recoilless device using double nozzle was presented to reduce the loss of bullets'' velocity and improve the recoil efficiency. Based on kinetic theory of supersonic gases, considering the after-effect process, a gas dynamic model of large-caliber weapons was established for the interior ballistic. The mathematical model of gas dynamics was proved to be effective by experimental tests. The properties of system parameters of two recoilless devices including muzzle velocity, anti-recoil efficiency, motion characteristics of automation and recoil force were compared and discussed. The results show that reducing recoil efficiency of large-caliber weapons using the recoilless device with double chamber is remarkably improved and recoil force is reduced effectively.