水下锥膛炮内弹道方程组的推导与计算

Derivation and Calculation of Equation Set of Interior Ballistics of Underwater Tapered-bore Gun

针对因火炮工作环境、装置的不同而导致经典内弹道基本方程组不适用的问题,以锥膛炮和带有弹裙的水下射弹为研究对象,考虑了挤压阻力、变质量水柱和压力变化的相互作用,推导出锥膛炮水下内弹道基本方程组,并对某口径锥膛炮进行数值计算,计算结果发现:身管长度影响炮口速度和膛内压力,浸水模式下的炮口速度与身管长度之间存在最佳匹配的关系,膛压随身管长度的增加而增大。

Aiming at the problem of fundamental equation set of interior ballistic not being suitable for different artillery working environments or equipment. With a tapered-bore gun and an underwater pro- jectile with skirts as the object of study, mutual effects of pressing resistance, variable mass water column and pressure variation were taken into account. Derived were fundamental equation set of inte- rior ballistic of underwater tapered-bore gun. And numerical calculation on the certain tapered-bore gun showed that the barrel length affected the muzzle velocity and chamber pressure. The muzzle velo- city of submerged mode had the best match with the barrel length. And chamber pressure increased with the length of the barrel. The results will provide theoretical references for the design of interior ballistics for tapered-bore gun and the design of the match of the projectile with the barrel.