Blast Impulse at Very Near Distance

摘要

Steel cubes and steel spheres were propelled in radial directions by a detonating cylindrical high explosive charge at scaled distances of 0.05-0.25 m kg~(-1/3).The analysed velocities can be simply transferred to momenta,to energies and analysed impulse densities.A little surprising result is that the cubes with the larger area mass achieved remarkably higher velocities compared to the spheres.This is definitely a result caused by different air drag coefficients.The achieved impulse densities at these near distances are in the magnitude comparable with the values available in the literature.