Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Hub Parametric Investigation of Main Rotor Stability of Bearingless Helicopter

무베어링 헬리콥터 주 로터의 허브 파라미터 변화에 따른 로터 안정성 특성 해석

  • 윤철용 (한국항공우주연구원 회전익기술팀) ;
  • 기영중 (한국항공우주연구원 회전익기술팀) ;
  • 김태주 (한국항공우주연구원 회전익기술팀) ;
  • 김덕관 (한국항공우주연구원 회전익기술팀) ;
  • 김승호 (한국항공우주연구원 회전익기술팀)
  • Received : 2012.05.31
  • Accepted : 2012.07.20
  • Published : 2012.08.20
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Abstract

This paper describes a stability and dynamic characteristics of bearingless helicopter main rotor in hover. Baseline rotor configuration is defined and modal analysis for the configuration is taken to verify the dynamic characteristics. The kinematic pitch-lag couplings through ways of pitch link installation are analyzed to know effects on loads, frequencies and stability. The effects of pitch link attachments in spanwise direction and chordwise direction as well as pitch link inclination on thrust, power, flpa-lag-pitch mode frequencies and inplane damping are examined. Pitch link at trailing edge location in chordwise direction has influence on aeroelastic stability of the rotor. Also, the pitch link with negative inclination angle makes inplane damping increase.

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References

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Cited by

  1. The Measurement Test of Stiffness and Natural Frequencies for Bearingless Rotor System of Helicopter vol.25, pp.12, 2015, https://doi.org/10.5050/KSNVE.2015.25.12.881
  2. Dynamic Characteristics of Helicopter Bearingless Main Rotor vol.44, pp.5, 2016, https://doi.org/10.5139/JKSAS.2016.44.5.439