| Experimental and Numerical Studies on a Test Equipment for the Replication of Flight Motions of Spin-Stabilized Ammunition |
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Youngki Lee, Sungtaek Park, Yihwa Song, Minsu Choi |
1Defense R&D Institute, Poongsan Corporation
2CD-adapco Korea |
| 회전안정탄약의 비행운동 모사장치에 대한 실험적·수치해석적 연구 |
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이영기, 박성택, 송이화, 최민수 |
1(주)풍산 방산기술연구원
2씨디어댑코코리아 |
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| Abstract |
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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. |
| Key Words:
Computational Fluid Dynamics, Gas Gun, Spin-Stabilized Ammunition, Subsonic Launcher |
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