Experimental and Numerical Studies on a Test Equipment for the Replication of Flight Motions of Spin-Stabilized Ammunition

Title & Authors
Experimental and Numerical Studies on a Test Equipment for the Replication of Flight Motions of Spin-Stabilized Ammunition
Lee, Youngki; Park, Sungtaek; Song, Yihwa; Choi, Minsu;

Abstract
A gas gun system to replicate the flight motions of large caliber spin-stabilized ammunition has been investigated experimentally and numerically. The system is specially designed to study aerodynamic characteristics and dynamics of a flight body ejected from a cargo shell or a subsonic projectile itself at up to 2,000 rpm and 100 m/s. Raynolds-averaged Navier-Stokes equations with a overset mesh technique and 6-DOF dynamics were solved to decide the chamber pressure according to the muzzle velocity input by users. The predicted velocity values show less than 6 % of discrepancies compared to experimental data. The system has successfully been tested for the simulation of deployment of a parafoil for a 155 mm gun-launched projectile.
Keywords
Computational Fluid Dynamics;Gas Gun;Spin-Stabilized Ammunition;Subsonic Launcher;
Language
Korean
Cited by
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