Study on Charge Parameter Effects to Gun Interior Ballistic Performance

The influence of different charge parameters on the gun interior ballistic performance is of great significance for the propellant shape optimization and charge structure design. In this paper, a gun interior ballistic model is built, and a numerical algorithm based on the fourth-order Runge-Kutta method is designed to solve the interior ballistic parameters. By adjusting the charge parameters the influences of the propellant power, charge quantity, burning rate coefficient, pressure index on the internal ballistic time, maximum chamber pressure, muzzle velocity of the projectile, and gas temperature are calculated. Results show that the variation of charge parameters can not only improve the muzzle velocity and the power of the gun but also affect the maximum chamber pressure and gas temperature. Additionally, To improve the burning rate coefficient, the propellant power, charge quantity, and pressure index should be controlled within a reasonable range.