NASA Glenn, in partnership with US industry, completed an exhaustive experimental study on jet noise reduction from separate flow nozzle exhaust systems. The study developed a data base on various bypass ratio nozzles, screened quietest configurations and acquired pertinent data for predicting the plume behavior and ultimately its corresponding jet noise. Several exhaust system configurations provided over 2.5 EPNdB jet noise reduction at take-off power. These data were disseminated to US aerospace industry in a conference hosted by NASA GRC whose proceedings are shown in this report.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Separate Flow Nozzle Test Status Meeting


    Publication date :

    2000


    Size :

    373 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    ASYMMETRIC FAN NOZZLE IN HIGH-BPR SEPARATE-FLOW NACELLE

    LORD WESLEY K / MALECKI ROBERT E | European Patent Office | 2018

    Free access

    Asymmetric fan nozzle in high-BPR separate-flow nacelle

    LORD WESLEY K / MALECKI ROBERT E | European Patent Office | 2019

    Free access


    NSAWET Results of the Dual Separate Flow Reference Nozzle from AIAA PAW02

    Li, Zhao / Chen, Haixin / Zhang, Yufei | AIAA | 2015


    Computational Aeroacoustics of a Separate Flow Exhaust System with Eccentric Inner Nozzle

    Mihaescu, Mihai / Gutmark, Ephraim / Szasz, Robert-Zoltan et al. | AIAA | 2007