항공우주시스템공학회지 (Journal of Aerospace System Engineering)

  • 제15권3호
  • /
  • Pages.30-44
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  • 2021
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  • 1976-6300(pISSN)
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  • 2508-7150(eISSN)
항공우주시스템공학회 (The Society for Aerospace System Engineering)
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Actuator 기법을 이용한 제자리 비행하는 동축 반전 프로펠러 공력 성능에 관한 수치적 연구

Numerical Study on Aerodynamic Performance of Counter-rotating Propeller in Hover Using Actuator Method

  • 김다혜 (부산대학교 항공우주공학과) ;
  • 박영민 (한국항공우주연구원 항공기술연구부) ;
  • 오세종 (부산대학교 항공우주공학과) ;
  • 박동훈 (부산대학교 항공우주공학과)
  • Kim, Dahye (Department of Aerospace Engineering, Pusan National University) ;
  • Park, Youngmin (Aeronautics Technology Research Division, Korea Aerospace Research Institute) ;
  • Oh, Sejong (Department of Aerospace Engineering, Pusan National University) ;
  • Park, Donghun (Department of Aerospace Engineering, Pusan National University)
  • 투고 : 2020.12.21
  • 심사 : 2021.04.13
  • 발행 : 2021.06.30
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초록

동축 반전 프로펠러는 기존의 단일 프로펠러와 달리 추가적인 설계 변수의 증가로 인해 실험적 성능평가에 비용과 시간 측면에서 여러 제약이 따른다. 또한 상/하단 프로펠러 사이의 상호 간섭으로 인하여 수치 해석에 있어서도 많은 시간과 자원이 요구된다. 본 연구에서는 시간 효율적인 수치해석기법인 actuator 기법을 활용하여 제자리 비행하는 동축 반전 프로펠러의 공력 성능에 관한 수치적 연구를 수행하였다. 상용 CFD 코드인 ANSYS Fluent 결과와 비교하여 해석기법의 정확성을 검증하였다. 해석 변수로는 동축 반전 프로펠러의 축 간극과 회전속도를 선정하였으며, 다양한 조건에서 동축 반전 프로펠러의 공력 성능을 획득하였다. 획득한 공력 성능을 바탕으로 단일 프로펠러와 동축 반전 프로펠러의 제자리 비행 효율 계수를 획득하고, 단일 프로펠러의 성능으로 동축 반전 프로펠러의 성능을 예측할 수 있는 예측 인자를 도출하여 actuator 기법의 활용성을 평가하였다.

Experimental investigation of counter-rotating propellers is subject to multiple time and cost constraint because of additional design parameters unlike single propeller. Also, a lot of computing time and resources are required for numerical analysis due to consideration of the interference between the upper and lower propellers. In the present study, numerical simulations were conducted to investigate the hover performance of counter-rotating propellers by using actuator method which is considered to be time-efficient. The accuracy of the present numerical methods was validated by comparing the ANSYS Fluent which is commercial CFD code. The axial spacing and rotational speed were selected as the analysis variables, and the aerodynamic performance was obtained under various conditions. Based on the obtained results, the Figure of Merit (FM) of single propeller and counter-rotating propellers and a prediction factor which enables prediction of counter-rotating propeller performance using a single propeller were derived to evaluate availability of the actuator method.

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과제정보

이 논문은 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음

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