销毁弹喷管喉部截面积对未爆弹作用效能的影响

Influence of Nozzle Throat Area of Disposal Ammunition on Destruction Effect

以Q235钢板模拟弹丸壳体,通过改变销毁弹喷管喉部截面积,研究其对销毁弹工作时间及熔穿效果的影响。结果表明:喉部截面积过小会导致喷管堵塞,作业效果差。喉部截面积为4πmm2时,熔穿后剩余燃烧时间达到3.48s,熔穿孔的直径达到8.91mm,可以使炸药燃烧产物顺利释放出去,提高了销毁未爆弹的作用效能。而喉部截面积过大,熔穿时间增加,熔穿剩余作业时间缩短,不利于销毁作业。

With Q235 steel plate as the ammunition shell material, through changing the nozzle throat area, its effect on destruction to unexploded ammunition was experimental studied. The results show that, for this destroying device, when the throat area was small, the nozzle was plugged and the destroying effect was poor. While the caliber of the throat area is about 4ram, the after-effect period reaches 3.48s, and the ammunition can cut steel plate with the perforation caliber of 8.91mm, the ammunition destruction effect is improved. However, with the increase of nozzle throat area, the perforation time is increased, and the after-effect period time is shorten, which lead the poor destroying operation.