DESIGN OPTIMISATION OF UNDERWATER AMMO FOR AMPHIBIOUS RIFLE

Abstract

Underwater ammunition is a special type of ammunition used for underwater firing, which has
been research in many countries in recent years. The stable principle of this ammunition is
"supercavity" different from conventional infantry ammunition. As it is a newly researched
ammunition type, the design and testing process must examine many different parameters that
affect the technical performance of ammunition. Therefore, one of the issues is that the experiment
in the designing process of this ammunition is very difficult. This paper will present the application
of Response surface experiments to optimize the design of underwater projectiles for 5.56mm
amphibious rifles. The two output objective functions are the maximum pressure in bore and muzzle
velocity of the projectile, and the three input parameters are projectile mass, propellant mass, and
projectile pull-out force.