Study of Influence Factors on Launching Performance of Rarefaction Wave Gun

The newly developed rarefaction wave gun(RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the breech.The four-stage physical model of RAVEN was put forward using quasi one-dimensional quasi two-phase flow theory.Taking a 14.5?mm rarefaction wave test gun as the computing instance,the influences of such parameters on recoil reduction efficiency and muzzle velocity of RAVEN were calculated and analyzed,as venting time of the breech,charge mass,chamber volume,barrel length,projectile mass and length and expanding angle of the nozzle.Besides a new way of modifying the muzzle velocity and firing rate of RAVEN was invented.