한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제44권1호
  • /
  • Pages.23-32
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  • 2016
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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초고속 비행체 항력감소를 위한 미국의 분사 제트 연구 동향과 핵심 변수

Key Parameters and Research Review on Counterflow Jet Study in USA for Drag Reduction of a High-speed Vehicle

  • Kim, Jihong (Department of Aerospace Engineering, Graduate School at Chungnam National University) ;
  • Kang, Seungwon (Department of Aerospace Engineering, Graduate School at Chungnam National University) ;
  • Lee, Jaecheong (Department of Aerospace Engineering, Graduate School at Chungnam National University) ;
  • Huh, Hwanil (Department of Aerospace Engineering, Chungnam National University)
  • 투고 : 2015.10.30
  • 심사 : 2015.11.10
  • 발행 : 2016.01.01
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초록

초고속으로 비행하는 물체의 항력을 줄이기 위해 노즈콘으로부터 제트를 분사하는 다양한 연구가 진행되고 있다. 본 연구에서는 항력감소의 기초자료와 핵심 변수를 파악하기 위해서 미국의 항력감소용 분사 제트 연구 동향을 조사하고 요약하였다. 연구에 활용한 노즈콘 모델의 형상은 반구 실린더, 잘린 콘, 재돌입 캡슐이었으며, 각 모델의 시험조건에 대해 정리하였다. 항력감소의 핵심 변수는 분사제트의 마하수, 질량유량, 압력비율이다. 항력감소효과는 주어진 조건에 따라 다양한 결과를 보였지만, 최대 40~50% 정도까지 항력이 감소하였다.

Various studies have been conducted for drag reduction of a high-speed vehicle by injecting counterflow jet from its nose cone. In this study, in order to obtain baseline data and key parameters for drag reduction method, the counterflow jet study of the USA is reviewed and summarized. The nose cone shapes of each study are hemisphere cylinder, truncated cone, and reentry capsule, and their test conditions are summarized accordingly. Key parameters for drag reduction are jet mach number, mass flow rate, and pressure ratio. Even though drag reduction effects show various results according to given test conditions, it is found that the drag reduction effect reaches up to 40~50%.

키워드

참고문헌

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피인용 문헌

  1. Preliminary Results on Plasma Counterflow Jets for Drag Reduction of a High Speed Vehicle vol.20, pp.6, 2016, https://doi.org/10.6108/KSPE.2016.20.6.101