Influence of Loading Parameters of Mixed Charge on Ballistic Performance

Abstract

In order to study the influence of loading parameters of mixed charge on its trajectory performance, the classical internal trajectory optimization model is adopted to control the consistency of other conditions and regularly change the shape, main charge quantity, arc thickness of main charge and arc thickness of auxiliary charge in mixed charge to calculate the internal trajectory performance data. When the main charge weight is 1780g, the arc thickness of the main charge is 1 mm, and the arc thickness of the auxiliary charge is 0.48mm, the data changes of the ballistic performance with the other three variables are analyzed. The results show that the influence of the main charge arc thickness of the corresponding step length on the ballistic properties of the mixed charge is more obvious than that of the main charge quantity and the auxiliary charge arc thickness of the corresponding step length. The increase of arc thickness will lead to the decrease of muzzle velocity, the decrease of bore pressure and the increase of relative combustion position of gunpowder. The increase of charge volume will lead to the increase of muzzle velocity, the increase of bore pressure and the decrease of the end position of gunpowder combustion velocity. Compared with porous powder, tubular powder has higher initial velocity, smaller gunpowder end position and higher bore pressure.