Aiming at the object of the firing range maximization of the grenade of the cased telescopedammunition(CTA) gun, a classical interior model was established according to the specialcharge structure of the CTA and the principle of the sequential combustion with twoignitions. Combined with the particle trajectory model, the optimization design of theintegration of the interior and exterior ballistics was carried out using the intelligentoptimization algorithm. The results show that, the maximum chamber pressure and themuzzle velocity simulated using the interior model of the CTA gun agree well with theexperimental results. The optimal scheme of the projectile mass and the charge design wasobtained by means of the optimization design of the ballistic integration. The grenadeprojectile mass increases 16.4% and the maximum range increases 11.8% compared withthe original scheme. The method in the paper can improve the integrated ballisticperformance of the CTA and provide an efficient tool for its ballistic and charge design.
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