To increase the muzzle velocity of the projectile but not the maximum pressure in bore,a new scheme of two-stage charge for the second propulsion in bore for large caliber weapons is introduced.

• 提出一种采用双级装药进行膛内二次发射以提高弹丸初速而不增大最大膛压的新技术,设计了双级装药弹的结构,为提高大口径身管武器的初速提供了一种新思路。