Version 1.4 of TFaNS, the Tone Fan Noise Design/Prediction System. has recently been evaluated at the NASA Glenn Research Center. Data from tests of the Allison Ultra High Bypass Fan (UHBF) were used to compare to predicted farfield directivities for the radial stator configuration. There was good agreement between measured and predicted directivities at low fan speeds when rotor effects were neglected in the TFaNS calculations. At higher fan speeds, TFaNS is shown to be useful in predicting overall trends rather than absolute sound pressure levels.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center


    Contributors:

    Publication date :

    1999-12-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :



    NASA Glenn Research Center

    M. Perez-Davis | NTIS | 2012


    NASA Glenn Research Center

    Perez-Davis, Marla | NTRS | 2012


    NASA Glenn Research Center Overview

    Campbell, Donald J. | NTRS | 2003


    NASA Glenn Research Center Overview

    D. J. Campbell | NTIS | 2003