12.7mm口径空心弹丸空气动力学特性分析  

Research on Aerodynamic Characteristic of Hollow Projectile with 12.7mm Diameter

作　　者：陈杨[1] 廖振强[1] 王涛[1] 刘国鑫[1,2] 

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：《系统仿真学报》2010年第2期337-339,共3页Journal of System Simulation

摘　　要：为了更深入的了解空心弹丸的空气动力学特性,对空心弹丸和实心弹丸的外弹道流场分别建立了三维无粘Euler方程,并对两者的外弹道过程建立了弹丸质心运动微分方程组。以12.7mm口径实验弹为对象进行数值模拟仿真计算。通过对比分析,得出:由于结构特别,空心弹丸的阻力系数比实心弹丸小很多,并且在外弹道过程中,空心弹丸能够更好的保持飞行速度和弹道高,更有利于提高自动武器的射击效果。In order to understand the aerodynamic characteristic of hollow projectile, the three-dimensional Euler equations of exterior Ballistics flow for hollow and solid projectile were established. And the differential equation group in center of mass for two projectiles was established. The 12.7mm test bullet was taken for numerical simulation. It is found that the drag coefficient of the hollow projectile is much smaller than the solid projectile. And in exterior trajectory, the hollow projectile is able to better maintain the high-flying speed and trajectory, It is more conducive to raising the fire effect of automatic weapons.

关 键 词：空心弹丸 空气动力学 阻力系数 外弹道 

分 类 号：TJ011.2[兵器科学与技术—兵器发射理论与技术]