聚能射流高速光学测试技术

本文介绍了用正文同步扫描测量技术对聚能射流的动态参数进行测试,拍摄到非常清晰的射流头部在空气中飞行所产生的空气冲击波。运用计算机图象处理技术对拍摄的底片进行处理以后,获得了较为理想的射流图象。对底片进行测量,获得了射流在X平面内和Y平面内的离轴偏差,以及射流在X、Y平面内的飞行姿态,射流的累积长度作为速度的函数,射流的速度分布,射流的质量分布和动能分布,射流的断裂时间和断裂位置。

THE OPTICAL HIGH SPEED MEASUREMENT METHOD OF SHAPED CHARGE JET

The test Setup for recording a shaped charge (OSST)is presented in this paper. For an anal ps is of the pictures,the films was pr ocessed with digital image processing technique.It is shown how the information on the deviation of the jet elements in X-Yplane and on the length of the jets as well as that on the velodty distrlbution of the jet and on the mass distribution of the jet and on the k ineticenergy distrhution of the jet can be extracted from the streak record.It is possible to find out about the times and positions of breakup of the individual pariticles as functions of their velocities.