A major source of noise in commercial turbofan engines is the interaction of the fan blade wakes with the fan exit vanes (stators). These wakes can be greatly reduced by filling them with air blown out of the blade trailing edge. Extensive testing of this concept has demonstrated significant noise reductions. These tests were conducted on a low-speed, 4- ft-diameter fan using hollow blades at NASA Glenn Research Center's Aeroacoustic Propulsion Laboratory (AAPL).


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    New Fan Engine Noise-Reduction Concept Using Trailing Edge Blowing of Fan Blades Demonstrated


    Contributors:


    Publication date :

    2002-03-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Trailing Edge Blowing of Fan Blades

    Borgoltz, Aurelien / Craig, M. Elizabeth / Devenport, William | AIAA | 2005


    Low-Speed Fan Noise Reduction with Trailing Edge Blowing

    Sutliff, Daniel / Tweedt, Daniel / Fite, E. Brian et al. | AIAA | 2002



    Trailing-Edge Blowing for Reduction of Turbomachinery Fan Noise

    J. M. Brookfield / I. A. Waitz | AIAA | 2000