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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Effect of Lift-offset Rotor Hub Vibratory Load Components on Airframe Vibration Responses of High-Speed Compound Unmanned Rotorcrafts

고속비행 복합형 무인 회전익기의 Lift-offset 로터 허브 진동 하중 성분과 기체 진동 응답의 상관 관계의 연구

  • Kim, Ji-Su (Department of Aerospace Engineering, Chungnam National University) ;
  • Hong, Sung-Boo (Department of Aerospace Engineering, Chungnam National University) ;
  • Kwon, Young-Min (Mechanical Design Team, Fundamental Technology Research Center, Hanhwa Systems) ;
  • Park, Jae-Sang (Department of Aerospace Engineering, Chungnam National University)
  • 김지수 (충남대학교 항공우주공학과) ;
  • 홍성부 (충남대학교 항공우주공학과) ;
  • 권영민 (한화시스템(주) 기반기술연구소 기계설계팀) ;
  • 박재상 (충남대학교 항공우주공학과)
  • Received : 2021.02.20
  • Accepted : 2021.05.07
  • Published : 2021.06.05
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Abstract

This paper investigates numerically the effect of rotor hub vibratory load components on the airframe vibration responses of high-speed compound unmanned rotorcraft (HCUR) using a lift-offset coaxial rotor, wings, and two propellers. The rotor hub vibratory loads are predicted using a rotorcraft comprehensive analysis code, CAMRAD II, and the airframe vibration responses are calculated by a finite element analysis software, MSC.NASTRAN. It is shown that the vibratory hub pitch moment of a lift-offset coaxial rotor is the most dominant component for both the longitudinal and vertical vibration responses at four specified locations of the airframe.

Keywords

Acknowledgement

본 연구는 국방과학연구소의 지원으로 차세대 고속 복합형 무인 회전익기 특화연구실에서 수행되었습니다.

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