• 제목/요약/키워드: Subsonic Launcher

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아음속 유동에서의 발사체의 공력특성에 관한 실험 연구 (Experimental study on aerodynamic characteristics of launcher at subsonic speed)

  • 노오현;이동호;김원욱;김철완
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1988년도 한국자동제어학술회의논문집(국내학술편); 한국전력공사연수원, 서울; 21-22 Oct. 1988
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    • pp.608-613
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    • 1988
  • Subsonic aerodynamic force and moment characteristics have been determined for parametric groups of launchers. Geometric variables considered in the experimental study were body length, nose planform, fin planform (body-alone contained), number of stage and existence of extrnal booster, All data were obtained for angles of attack from 0 to 27 deg in 3-deg. increments.

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회전안정탄약의 비행운동 모사장치에 대한 실험적·수치해석적 연구 (Experimental and Numerical Studies on a Test Equipment for the Replication of Flight Motions of Spin-Stabilized Ammunition)

  • 이영기;박성택;송이화;최민수
    • 한국군사과학기술학회지
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    • 제18권6호
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    • pp.728-735
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    • 2015
  • 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.