Numerical analysis of the performance of mufflers with different structures of a 7.62 mm sniper gun

DOI:	10.11809/bqzbgcxb2024.12.012
Keywords:	sniper gun; muffler; CFD CAA; muzzle flow field; noise directivity
Abstract:	Muzzle noise seriously harms the physiological health of the shooter, and the position of the shooter is easily exposed in the battle. In order to reduce the adverse effects of muzzle noise, it is necessary to design excellent noise reduction equipment. The sound pressure level of a 7.62 mm sniper gun muzzle noise was calculated by CFD CAA, and the reliability of the calculation model was proved by experiments. The influence of mufflers with different structures on the velocity and pressure distribution of the muzzle flow field was investigated, when the structure was similar but the diameter of the top and bottom of the bowl was different, the noise reduction effect was different by 5~8 dB; And the reasons for the difference in the performance of mufflers with different structures were analyzed. By further comparing the difference of noise directivity, the influence law of muffler on the noise distribution at the mouth of the bore was obtained, and the conclusion has certain reference significance for the structure optimization of muffler.
Issue:	Vol. 45 No. 12 (2024)
Published:	2024-12-30
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