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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Belly Sting Model Support Interference Effect of NASA Common Research Model at Low Speed Wind Tunnel

저속 풍동시험 시 NASA Common Research Model의 Belly Sting 모형 지지부에 의한 간섭효과에 관한 연구

  • Cha, Kyunghwan (School of Mechanical Engineering, Chungnam National University) ;
  • Kim, Namgyun (Agency for Defense Development) ;
  • Ko, Sungho (School of Mechanical Engineering, Chungnam National University)
  • Received : 2020.09.01
  • Accepted : 2021.02.16
  • Published : 2021.03.01
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Abstract

Computational Fluid Dynamics (CFD) was performed under low-speed wind tunnel test conditions using a 29.7% scale model of the NASA common research model. A wind tunnel test was conducted to measure the aerodynamic coefficient of the CRM with Belly sting model support configuration at a low Reynolds number of 0.3×106 and it was compared with the aerodynamic coefficient of CFD analysis. In order to verify the validation of the analysis, a computational analysis under the conditions of the advance research was performed and compared. The interference effect of the Belly sting model support affected not only the fuselage but also the main and tail wings.

NASA Common Research Model의 29.7% 축소 모형에 대하여 저속 풍동시험 조건으로 수치해석을 수행하였다. 낮은 레이놀즈수 영역인 0.3×106에서 Belly sting 모형 지지부를 장착한 CRM의 공력계수를 측정하는 시험이 수행되었으며, 수치해석 결과와 비교하였다. 해석의 타당성을 검증하기 위해 선행연구 조건으로 전산해석을 수행하여 비교하였다. Belly sting 모형 지지부 유무에 대한 해석 결과 지지부에 의한 간섭 효과로 동체뿐만 아니라 주날개, 꼬리날개까지 공력에 영향이 있음을 확인하였다.

Keywords

References

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