摘要
提出了一种速度衰减系数α可预先确定的测量全预制和半预制破片群初速ｖ＿０的电探针方法。在效应靶背面竖直方向上依次布置ｎ根条状铜箔电探针，测量ｎ个破片飞行ｘ距离经历的时间ｔ，根据破片速度衰减公式确定ｎ个破片的ｖ＿０，测量误差不超过３％。应用最小二乘法原理，将实验测定的全预制破片群初速拟合成沿战斗部轴向分布，实验拟合线与用文献［１］报导的计算方法确定的结果基本一致。
An electric probe measurement technique of the initial velocities for both preformed and fireformed fragment groupe with velocity attenuation coefficient(α)determined previously is presented.N pieces of copper foil probe are kept in sequence. closc to rears of the targetsto measure the flight times(t)of n fragments in x- distance. According to the velocity attenuationformula of fragments derived in this paper,r_0=(e￣(ax) 1)at,the initial velocities of n fragmentsare determined. Analysis indicates that the measurement error of the fragment initial velocities is less than3%and the initial velocities of the fragment groups are fitted into a distribution curve along thewarhead axis by the least square method. Thc experimental fit curve is basically in agreement withthe results estimated by the method given in reference[1].
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1994年第4期363-368,共6页
Explosion and Shock Waves
关键词
战斗部破片
电探针
测量
武器
初速度
warhead fragment,initial velocity distribution,electric probe
