高空破片速度衰减规律试验研究

Experimental study on velocity attenuation law of fragments at a high altitude

为了揭示海拔高度对杀爆战斗部破片速度的影响规律,理论推导得到了耦合空气密度的破片速度衰减模型,建立了地面对高空环境模拟方法及装置,测试得到了钨合金长方体破片和钢球破片在不同模拟海拔高度下的速度曲线,拟合了破片速度衰减系数。结果表明:相同初速条件下,随着海拔升高,破片速度衰减变慢,衰减系数减小;相同海拔高度条件下,随着破片初速度的升高,破片速度衰减变慢,衰减系数减小。

In order to study the influence of altitude on velocity attenuation of the fragments of detonating warhead, this paper establishes a fragmentation velocity attenuation model coupled with air density through theoretical deduction. A method and devices for simulating high altitude environment on ground surface are established, velocity curves of tungsten alloy cuboid fragments and steel ball fragments at different simulated altitudes are obtained, and the velocity attenuation coefficient of the fragments is fitted. The main conclusions are as follows: at the same initial velocity, with the increase of altitude, fragment velocity attenuation slows down, that is, a decrease in attenuation coefficient;at the same altitude, with the increase of initial fragment velocity, fragment velocity attenuation slows down, that is, a decrease in fragment attenuation coefficient.