双管发射对运动弹丸姿态的影响  

Analysis of Influence of Parallel-Firing on Flying-Projectile

作　　者：佟凯[1] 李强[1] 

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《四川兵工学报》2015年第3期50-52,共3页Journal of Sichuan Ordnance

摘　　要：利用计算流体动力学(CFD)知识,针对某双管射击武器(含制退器)建立二维模型,通过求解N-S方程,模拟了在运动弹丸影响下膛口流场波系结构的变化过程。模拟发现:流场经历了初生、发展、稳定和衰减的全过程,同时双流场的出现还导致了干扰、叠加的现象,与单个流场相比,在流场结构上出现了较大的不同;流场发展与弹丸运动是一个相互影响的过程,相互叠加的流场使弹丸产生的侧向合力及身管的振动是使弹丸射击精度下降的主要原因。The article utilized the knowledge of CFD and established two-dimensional model for a parallelfiring weapon（ muzzle brake included） and calculated the N-S equation to simulate the development of muzzle flow field influenced by high-speed projectile. Simulations indicate that flow experienced the whole process of the birth,development,stability and decay,while dual field has also led to the emergence of the phenomenon of interference,superposition. Compared with a single flow,flow field structures appear quite different from each other. simulation also found that the change of flow field and the projectile movement are mutual,and the projectile side force produced by the complicated flow field and the gun vibration are the main reason of the drop of the firing precision.

关 键 词：计算流体动力学 并联发射 运动弹丸 膛口流场 

分 类 号：TJ012.3[兵器科学与技术—兵器发射理论与技术]