Comparative computational analysis of NATO 5.56 mm, APM2 7.62 mm and AK-47 7.82 mm bullet moving at Mach 2.0 in close vicinity to the wall

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چکیده

Comparative Computational Analysis of NATO 5.56 mm, APM2 7.62 mm and AK-47 7.82 Bullet Moving at Mach 2.0 in Close Vicinity to the Wall Various rifles require unique bullets. Each bullet has its capability, speed, impact on target. In metropolitan warfare, several bullets are shot close solid walls. These near walls affect pressure distribution over entire asymmetric bullet. The influence a reflected shock depends angle which it was altitude from ground body current research emphasizes three varying diameters used different types guns. first is second APM2's bullet, third an rifle. For 2-D steady computations, supersonic speed 2 considered analyze flowfield across all heights taken considering height-to-diameter ratios (h/D ratio) 0.5 3.0. contour drawn numerical simulations flowfield, aerodynamic coefficients like lift, drag, moment also plotted effects projectile. comparative analysis showed that trend wave reflections similar till h/D 1.5. experienced maximum followed by AK-47's NATO's lifting force = 1.0 due larger surface area than other two ammo. nose-up moment, whereas faced nose-down moment. As increased, effect appearing reduced. present shows suitable fire greater or equal

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ژورنال

عنوان ژورنال: FME Transactions

سال: 2023

ISSN: ['1451-2092', '2406-128X']

DOI: https://doi.org/10.5937/fme2301081s