气体炮内膛优化对弹丸初速的影响
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摘要
在分析拉瓦尔喷管对气体加速作用的基础上,提出用拉瓦尔喷管作为连接气体炮气室和身管的改进方案以及与喷管同长度的大斜面连接气室和身管的改进方案,以提高气体炮弹丸的出口初始速度。对两种改进方案及传统的气体炮气室和身管连接方式进行Fluent仿真和理论计算,结果显示:传统连接方式的弹丸初始速度仿真结果和理论计算结果基本吻合;两种改进方案的弹丸初始速度仿真结果基本一致,与传统方案相比均有一定程度的提高。
On the basis of analyzing the acceleration effect of Laval nozzle on gas, it introduces the improvement plan of connecting gas chamber, and barrel with Laval nozzle and connecting gas chamber and large inclined plane of the same length of nozzle. This improves the initial velocity of gas projectile. It carries the fluent simulation and theoretical calculation for the two improvement schemes and the traditional connection modes of gas gun chamber and barrel. The results show that the simulation results of the projectile muzzle velocity of the traditional connection mode are basically consistent with the theoretical calculation. The simulation results of projectile muzzle velocity of the two improved schemes are basically the same, but both of them are improved compared with the traditional schemes.
On the basis of analyzing the acceleration effect of Laval nozzle on gas, it introduces the improvement plan of connecting gas chamber, and barrel with Laval nozzle and connecting gas chamber and large inclined plane of the same length of nozzle. This improves the initial velocity of gas projectile. It carries the fluent simulation and theoretical calculation for the two improvement schemes and the traditional connection modes of gas gun chamber and barrel. The results show that the simulation results of the projectile muzzle velocity of the traditional connection mode are basically consistent with the theoretical calculation. The simulation results of projectile muzzle velocity of the two improved schemes are basically the same, but both of them are improved compared with the traditional schemes.
引文
[1] 李峰,拜云山,冯小伟. 一级气体炮内弹道方程及验证[J]. 弹道学报, 2016(1): 14-18.
[2] 苏红星,赵俊利,彭双志. 气体炮弹丸初速的影响因素分析[J]. 弹箭与制导学报, 2018, 38(1): 76-80.
[3] 胡静,张明安,岳文龙,等. 内弹道做工过程中气体工质做功能力计算分析[J]. 火炮发射与控制学报, 2011(2):82-85.
[4] 罗惕乾. 流体力学[M]. 北京:机械工业出版社, 2012:223-225.
[5] 王金贵. 气体炮原理与技术[M]. 北京:国防工业出版社, 2001: 41-45.
[2] 苏红星,赵俊利,彭双志. 气体炮弹丸初速的影响因素分析[J]. 弹箭与制导学报, 2018, 38(1): 76-80.
[3] 胡静,张明安,岳文龙,等. 内弹道做工过程中气体工质做功能力计算分析[J]. 火炮发射与控制学报, 2011(2):82-85.
[4] 罗惕乾. 流体力学[M]. 北京:机械工业出版社, 2012:223-225.
[5] 王金贵. 气体炮原理与技术[M]. 北京:国防工业出版社, 2001: 41-45.