喷管前置式减后坐武器内弹道机理分析  

Analysis of Interior Ballistics of Reduced Recoil Structure with Front Nozzle

作　　者：陈杨[1] 廖振强[1] 刘国鑫[1,2] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]解放军炮兵学院南京分院,江苏南京211132

出　　处：《计算机仿真》2009年第6期30-32,108,共4页Computer Simulation

摘　　要：为了更好的了解拉瓦尔喷管气流反推减后坐结构的工作原理,对它的内弹道过程和喷管内气流运动过程分别建立了欧拉型无粘的一维两相流数学模型,并以5.8mm口径实验枪为对象进行了数值仿真计算,将结果与普通导气式自动步枪内弹道仿真数据进行了对比,得出了喷管前置式减后坐武器发射过程中各种特征参量的变化规律,以及影响减后坐效率的关键参数。计算结果表明:喷管前置式减后坐结构在弹丸出膛口时速度减小5.5%,后坐力减小20.36%。In order to understand the working principle of Laval nozzle to achieve low recoil force on auto - weapons, Euler non - viscosity two - phase flow models are developed for the interior ballistics and the Laval nozzle. A 5.8mm test gun is used for numerical simulation and its performance is compared with ordinary auto - rifle. The rule of the variation of front nozzle＇s characteristic parameters and key parameters impacting the reduced recoil efficiency is worked out. It is found that the new configuration is capable of reducing the velocity by 5.5% and dropping recoil by 20. 36% , when the projectile is out of the bore.

关 键 词：内弹道 两相流 减后坐 喷管 

分 类 号：TJ012.15[兵器科学与技术—兵器发射理论与技术]