Volume 22 Issue 7
Jul.  2007
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MENG Yue, LI Lin, LI Qi-han. Study on the influence of aerodynamic mistuned on unsteady aerodynamic force of blade[J]. Journal of Aerospace Power, 2007, 22(7): 1060-1064.
Citation: MENG Yue, LI Lin, LI Qi-han. Study on the influence of aerodynamic mistuned on unsteady aerodynamic force of blade[J]. Journal of Aerospace Power, 2007, 22(7): 1060-1064.
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Study on the influence of aerodynamic mistuned on unsteady aerodynamic force of blade

  • School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 2006-06-19
  • Rev Recd Date: 2006-11-28
  • Publish Date: 2007-07-28
    Abstract
  • To reduce the resonance stress of rotor blade under wake aerodynamic force of front stator vane,and also extend the fatigue endurance,the aerodynamic mistuned of stator vane was analyzed.Two kinds of design solutions of stator vane's aerodynamic mistuned were considered,one: uneven stator mistuned,and the other: asymmetry stator mistuned.Through calculation of unsteady flow field of stator-rotor model,the spectrum and amplitude of unsteady aerodynamic force of two mistuned design packages were compared.The results show that,uneven stator mistuned design couldn't reduce aerodynamic force of rotor blade,but lead to bigger frequency division of spectrum and amplitude.Though asymmetry stator mistuned may result in bigger amplitude aerodynamic force with the same frequency as rotational speed,it could reduce effectively the aerodynamic force of blade as a whole.

     

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