Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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An Experimental Study on Aircraft Internal Store Separation Characteristics

항공기 내부무장 분리특성 분석을 위한 풍동시험연구

  • An, Eunhye (Department of Mechanical Engineering, Korea Air Force Academy) ;
  • Cho, Donghyun (Department of Aerospace Engineering, Korea Air Force Academy) ;
  • Kim, Jongbum (Department of Aerospace Engineering, Korea Air Force Academy) ;
  • Jang, Youngil (Department of Aerospace Engineering, Korea Air Force Academy) ;
  • Jeong, KyeongJin (The 7th Research and Development Institute, Agency for Defense Development) ;
  • Kim, Sangjin (The 7th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Hokeun (The 7th Research and Development Institute, Agency for Defense Development) ;
  • Reu, Taekyu (The 7th Research and Development Institute, Agency for Defense Development) ;
  • Chung, Hyoungseog (Department of Aerospace Engineering, Korea Air Force Academy)
  • 안은혜 (공군사관학교 기계공학과) ;
  • 조동현 (공군사관학교 항공우주공학과) ;
  • 김종범 (공군사관학교 항공우주공학과) ;
  • 장영일 (공군사관학교 항공우주공학과) ;
  • 정경진 (국방과학연구소 제7기술연구본부) ;
  • 김상진 (국방과학연구소 제7기술연구본부) ;
  • 이호근 (국방과학연구소 제7기술연구본부) ;
  • 류태규 (국방과학연구소 제7기술연구본부) ;
  • 정형석 (공군사관학교 항공우주공학과)
  • Received : 2016.03.31
  • Accepted : 2017.01.20
  • Published : 2017.02.05
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Abstract

This study investigates store separation characteristics of an unmanned aerial vehicle having generic stealth configuration over unsteady flow of an internal bay. Free-drop wind tunnel tests are conducted to simulate bomb releases from an internal weapons bay while high-speed camera images are taken. The images are analyzed to examine the effects of flow velocity, angle of attack, flap deflection and the ejector force application on the store separation trajectories. For the free-drop wind tunnel tests, Froude Scaling is applied to match the dynamic similarity for the bomb model, and the ejector force is simulated by using small pneumatic cylinders. The results indicate that the test bomb model safely separates from the internal bay at the given test conditions and configurations. It is also observed that the effects of the flow velocity and ejector force application have greater impacts on the separation trajectories than those of angle of attack and flap deflection.

Keywords

References

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