Numerical Simulation of Interior Ballistic Performance of Cased Telescoped Ammunition With Semi-combustible Cartridge

Abstract

In order to improve the lightweight of cased telescoped ammunition(CTA)and the energy utilization rate in the launch process, the combustible cartridge materials were applied to the structure of cased telescoped ammunition(CTA). Based on the secondary ignition and propellant combustion technology, the combustible cartridge was simplified into a variable burning-rate flake charge, and regarded as one of the mixed charges, and the zero-dimensional interior ballistic model of CTA with semi-combustible cartridge was established. Numerical simulation of 105 mm CTA grenade shooting experiment was carried out, and the correctness of the proposed model was verified. On this basis, the interior ballistic performance of 105 mm CTA armor-piercing projectile with semi-combustible cartridge was predicted and analyzed. The maximum chamber pressure is 537.5 MPa, and the muzzle velocity is 1 667 m/s.