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Volume 39 Issue 4
Apr.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  39(4): 442-446.
Shen Wei, Ding Rong, Zhang Huiet al. Study on H.323-based distributed gatekeepers[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(01): 55-58. (in Chinese)
Citation: Liu Yang, Xiang Jinwu. Stability analysis of coupled rotor/fuselage system of shipboard helicopter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4): 442-446. (in Chinese)
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Stability analysis of coupled rotor/fuselage system of shipboard helicopter

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 05 Nov 2012
  • Publish Date: 30 Apr 2013
    Abstract
  • A stability analysis of a shipboard helicopter which considers the asymmetric and nonlinear landing gears, is investigated to explore the coupled dynamic behavior between the rotor and helicopter. The shipboard helicopter uses bearingless rotor, and the model of the rotor considers the large deformation of the blade, the multiple-load-path of the root of blade and the constraint of lag pin and pitch link. The undercarriage system of helicopter which is a nonlinear system comprises the oleo and tyre. Firstly, the frequency and damp of helicopter under "ground resonance" has been calculated, and the result shows that the model is available. Then the frequency and damp of helicopter under "ship resonance" has been calculated, and the result demonstrates that the rolling of ship makes the rotor/fuselage system more instability, and if harpoon is deck-lock the damping of system can be increase. That is to say the harpoon can make the rotor/fuselage system more stable on-deck.

     

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    • References(10)
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