Simulation of Hyper Firing-rate Gun System Firing Process

According to the interior ballistic characteristics of hyper firing-rate gun with pre-loading stacked projectiles,the calculation model of the gunpowder gas discharging process was established,and the change process of gunpowder gas pressure before the following projectile was analyzed in detail.The movement law of the following projectile under the conditions of changing fore-projectile pressure and after-projectile vacuum was calculated.The interior ballistic course was studied while hyper firing-rate gun firing three bullets sequenially in a round.The law and constraint conditions were discussed.The effect of fire frequency on the in-bore pressure and muzzle velocity was analyzed.The fore-projectile pressure is the major factor which influences the ballistic charactertics of hyper firing-rate gun.The preferable ballistic characteristics can be obtained by carefully designing and adjusting hype firing-rate gun under the conditions of constant firing interval.