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Volume 30 Issue 05
May  2004
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Journal of Beijing University of Aeronautics and Astronautics  > 2004  >  30(05): 438-443.
Xue Haifeng, Xiang Jinwu, Zhang Xiaoguet al. Coupled helicopter rotor/propulsion/transmission system torsional vibration analytical model and coupled influence investigation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(05): 438-443. (in Chinese)
Citation: Xue Haifeng, Xiang Jinwu, Zhang Xiaoguet al. Coupled helicopter rotor/propulsion/transmission system torsional vibration analytical model and coupled influence investigation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(05): 438-443. (in Chinese)
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Coupled helicopter rotor/propulsion/transmission system torsional vibration analytical model and coupled influence investigation

  • School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 04 Dec 2002
  • Publish Date: 31 May 2004
    Abstract
  • 　　　　To get methods avoiding system resonance, a practical analytical model of a helicopter's mechanic system of torsional oscillation was developed. The torsional system consisted of the helicopter's propulsion, the transmission system, the rotor and the tail rotor. The modal properties including modal frequencies and mode shapes of the torsional oscillation system were calculated and analyzed with eigen analysis and impedance matching method. The coupled modal properties were analyzed and compared with the hub fixed isolated rotor and the coupled rotor/propulsion/transmission system. The influence to the isolated blade and the rotor of coupled torsional system though changing rotor speed was gotten. Some effective methods to avoid resonance in designing were given.

     

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  • [1] Twomey W J, Ham E H. Review of engine/airframe/drive train dynamic interface development problems . AD A057932, 1978 [2]Richardson D A, Alwang J H. Engine/airframe/drive train dynamic interface documentation . U.S. Army Res and Tech Labs, TR 78-11,1978 [3]Needham J F, Banerjee D. Engine/airframe/drive train dynamic interface documentation . U.S. Army Res and Tech Labs, TR 78-12,1978 [4]Bowes M A. Engine/airframe/drive train dynamic interface documentation . U.S.Army Res and Tech Labs,TR 78-14,1978 [5]Hanson H W, Edwards R D, Riley W W, et al. Engine/airframe/drive train dynamic interface documentation . U.S. Army Res and Tech Labs, TR 78-15,1978 [6]Warmbrodt W, Hull R. Development of a helicopter rotor/propulsion system dynamics analysis . AIAA Paper 82-1078,1982 [7]Thibert F, Maquin F. Dynamic behavior of transmission systems . In:European Rotorcraft Forum , 1982 [8]Hansford R E. Considerations in the development of the couples rotor fuselage model . In:American Helicopter Society 48th Annual National Forum .Washington D C, 1992
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