Composite recoil reduction technology for a certain cased telescoped ammunition gun

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (5) : 243-252.

SHOCK AND EXPLOSION

Composite recoil reduction technology for a certain cased telescoped ammunition gun

PENG Birong1, XUE Xiaochun*1, CAO Yongjie2, HUANG Lei1, YU Yonggang1, WANG Hongjin2

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Abstract

In order to solve the problem of excessive system recoil caused by the large kinetic energy of the muzzle of a 40mm submerged bullet artillery gun, a composite recoil reduction technology that combines the muzzle brake and expanding wave technology is proposed. Based on this technology, the internal ballistic equation of the submerged bullet expanding wave artillery was established, and the change rule of the chamber pressure, velocity and body tube force with time during the internal ballistic period was analyzed. On this basis, based on the three-dimensional non-constant Navier-Stocks equation, combined with the dynamic mesh technology, the numerical simulation of the breech flow field during the after-effect period of the submerged projectile gun is carried out, which focuses on revealing the influence of the gunpowder and gas flow on the force characteristics of the retractor, and comparing and analyzing the recoil and recoil impulse change characteristics of the two submerged projectile guns containing the composite recoil reduction technology and the two types of submerged projectile guns without this technology in the entire internal ballistic path and the after-effect period. The results of the study show that the recoil and recoil impulse of the two types of submerged projectiles with the composite recoil reduction technology and without the technology are analyzed in comparison. The results of the study show that the composite recoil reduction technology can effectively reduce the recoil force of the submerged projectile gun and reduce the recoil impulse from 1720.36 N-s to 306.04 N-s, with a recoil reduction efficiency of 82.2%, while keeping the muzzle velocity of the projectile unchanged.

Key words

cased telescoped ammunition gun / rarefaction wave technology / muzzle brake / recoil reduction / recoil impulse

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PENG Birong1, XUE Xiaochun1, CAO Yongjie2, HUANG Lei1, YU Yonggang1, WANG Hongjin2. Composite recoil reduction technology for a certain cased telescoped ammunition gun[J]. Journal of Vibration and Shock, 2025, 44(5): 243-252

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