摘要
为了深入研究拉瓦尔喷管减后坐结构,提出了一种新的拉瓦尔喷管减后坐结构———双孔式拉瓦尔喷管减后坐结构,利用一维两相流理论建立其发射过程动力学模型,以某航炮为研究对象进行数值仿真计算,分析了2个导气孔之间的距离对弹丸速度和减后坐效率的影响,并将其与单孔喷管前置式减后坐技术进行对比分析。计算结果表明,较之单孔喷管前置式减后坐结构,该方案在弹丸初速下降较小的情况下,最佳减后坐效率高达32.85%。
In order to study recoilless structures with laval nozzles, a new technical structure was designed,which was two-hole recoilless structure with laval nozzles. The dynamic model of launching process was established by one-dimension two-phase-flow theory. Taking 23 mm test gun as research object, numerical simulation was carried out, and the influence of the distance between the two holes on the muzzle velocity of projectile and the efficiency of reducing recoil force were analyzed. The numerical simulation results were compared with the single-hole {ront-nozzle structure. Compared with the singlehole front nozzle structure,the best efficiency of reducing recoil force reaches 32.85 %, while the muzzle velocity of projectile don't reduce significantly.
出处
《弹道学报》
CSCD
北大核心
2013年第1期99-102,共4页
Journal of Ballistics
关键词
拉瓦尔喷管
减后坐
数值仿真
两相流
初速
laval nozzle
reducing recoil force
numerical simulation
two-phase flow
muzzle velocity