Abstract

In order to improve the muzzle velocity of the cased telescoped ammunition (CTA) with a certain caliber, a kind of charge structure with the shear form when engraving the grooves of the CTA was designed, a theoretical interior ballistic model was established and the optimization design plan was proposed. Results show that the interior ballistic model can generally describe the interior ballistic characteristics of the CTA, the calculated results agree well with the experimental ones. On the basis, by optimizing the charge structure parameters of the CTA using the multi-objective particle swarm optimization algorithm, the muzzle velocity of the projectile is improved by 2.58% with the maximum chamber pressure unchanged. The study can provide reference for the interior ballistic modeling and the charge structure of the CTA.

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