弹道学报2016，Vol.28Issue(1)：14-18,5.
一级气体炮内弹道方程修正及验证
Modification and Validation of Interior Ballistic Equation for One-stage Gas Gun
摘要
Abstract
In order to improve the accuracy and reliability of the theoretical calculation result,the classical equation for interior ballistics of one-stage gas gun was modified. The problem of classical equation was analyzed. The result shows that the influence of air chamber volume on bullet velocity can not be ignored. A new expression of gas density was presented. According to the equation of mass conservation, the momentum equation of flow,the motion equation of projectile,the adiabatic expansion equation of gas and ideal-gas equation,the modified equation of one-stage gas gun were deduced. The calculation results of muzzle velocity by classical equation and amendatory equation were compared to the result of numerical simulation of interior ballistics. The results show that the muzzle velocity obtained by above mentioned three methods is almost same when the volume ratio of air chamber to gun barrel is very small,but the differences between the results obtained by classical equation and the results obtained by the modified equation and numerical simulation increase markedly with the increase of volume ratio. The classical equation is only suitable for calculating velocity of gas gun with small volume ratio, and the modified equation can be used without volume ratio limit.关键词
气体炮/内弹道/炮口速度/容积比Key words
gas gun/interior ballistics/muzzle velocity/volume ratio分类
军事科技引用本文复制引用
李锋,拜云山,冯晓伟..一级气体炮内弹道方程修正及验证[J].弹道学报,2016,28(1):14-18,5.基金项目
中国工程物理研究院高新装备专项 （）
