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http://dx.doi.org/10.9766/KIMST.2015.18.6.728

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

Lee, Youngki (Defense R&D Institute, Poongsan Corporation)
Park, Sungtaek (Defense R&D Institute, Poongsan Corporation)
Song, Yihwa (Defense R&D Institute, Poongsan Corporation)
Choi, Minsu (CD-adapco Korea)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.18, no.6, 2015 , pp. 728-735 More about this Journal
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;
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