两种拉瓦尔喷管减后坐结构效能对比分析  

Performance Comparison of Two Recoilless Structures With Laval Nozzles

作　　者：陈杨[1] 廖振强[1] 刘国鑫[1,2] 王涛[1] 

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

出　　处：《弹道学报》2008年第4期88-91,共4页Journal of Ballistics

摘　　要：为了更加深入地了解2种拉瓦尔喷管减后坐结构的动力学特性,对2种利用拉瓦尔喷管减后坐的结构分别建立了双一维两相流模型,以5.8 mm口径实验枪为研究对象进行数值模拟计算,对数值仿真结果进行了对比分析.结果表明,喷管后置式减后坐结构在保持弹丸出膛口速度的同时能够提供更大的减后坐效率,减后坐效能明显优于喷管前置式减后坐结构.In order to understand dynamic characteristics of two recoilless structures with Laval nozzles, the double one-dimension two-phase flow interior ballistic models were developed according to two recoilless structures with Laval nozzles. Taking 5.8 mm test guns as research object, numerical simulation was carried out. The numerical simulation results were compared. The results show that the front nozzle structure is capable of providing greater efficiency by reducing recoil impulse and maintaining velocity, and the performance of reducing recoil impulse is superior to the rear nozzle structure.

关 键 词：拉瓦尔喷管 两相流 减后坐 效率 

分 类 号：TJ012.15[兵器科学与技术—兵器发射理论与技术]