球形破片长距离飞行时速度衰减规律研究

Long-Distance Flight Performances of Spherical Fragments

Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

摘要: 通过二级轻气炮发射方式、激光无阻测量方法测量了不同材料、不同直径的球形破片在不同初速条件下长距离（最大距离达120 m）飞行时的速度衰减规律。试验结果表明：在同一初速条件下，球形破片长距离飞行时的衰减系数为常数；破片飞行空气阻力系数与破片初速有关，在战斗部设计关心的范围内（1.2～2.2 km/s），阻力系数与初速成线性关系。
- 球形破片 /
- 衰减系数 /
- 空气阻力系数
Abstract: Using two-stage light gas gun and laser technique for velocity easurement, we studied the long-distance flight performances of spherical fragments with different materials and different diameters. The flight distance is 60～120 m, and the initial velocity is 1.2～2.2 km/s. The experimental results show that: (1) the velocity attenuation coefficient of spherical fragment is constant, and (2) the air drag coefficient is slightly affected by the initial velocity of spherical fragment, the air drag coefficient is a linear function of initial velocity.
- spherical fragment /
- attenuation coefficient of velocity /
- air drag coefficient