The effectiveness of augmenting structurally optimized blades for vibration and noise reduction with active control trailing edge flaps is studied. A flight condition characterized by significant blade-vortex interaction (BVI) effects is examined. Surrogate based optimization based on the Efficient Global Optimization (EGO) algorithm was used to conduct a global search of the design space for low vibration and noise designs However, the optimum vibration design was not the same as the optimum noise design. Therefore multi objective function optimization techniques were employed to locate the best trade-off, or Pareto optimal, designs. Active control flaps were added to the structurally optimized blades and the best active/passive configurations were identified.


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    Title :

    Vibration and noise reduction of helicopter rotors using an active/passive approach


    Contributors:


    Publication date :

    2008


    Size :

    18 Seiten, 38 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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