A recent experimental investigation has identified the aero/acoustic characteristics of exhaust nozzles for duct heating turbofan engines over a range of simulated flow conditions. Jet noise and performance levels are summarized for a series of coannular nozzles representing both acoustically suppressed and unsuppressed designs operating in a static environment. The basic coannular nozzles were found to provide inherent noise suppression. Multi-element suppressor nozzles provided additional noise suppression, but with appreciable thrust loss. The impact of these results on the advanced supersonic transport studies is also presented, indicating potentially large reductions in take-off gross weight or community noise footprints.


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    Titel :

    Aero-acoustic performance characteristics of duct burning turbofan exhaust nozzles


    Beteiligte:
    Kozlowski, H. (Autor:in) / Packman, A. B. (Autor:in) / Gutierrez, O. (Autor:in)

    Kongress:

    Aerospace Sciences Meeting ; 1976 ; Washington, DC


    Erscheinungsdatum :

    01.01.1976


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Aero-acoustic performance characteristics of duct burning turbofan exhaust nozzles

    KOZLOWSKI, H. / PACKMAN, A. / GUTIERREZ, O. | AIAA | 1976


    Aero-acoustic tests of duct-burning turbofan exhaust nozzles

    Kozlowski, H. / Packman, A. B. | NTRS | 1976


    Aerodynamic and acoustic tests of duct-burning turbofan exhaust nozzles

    Kozlowski, Hilary / Packman, Allan B. | TIBKAT | 1976


    Jet noise characteristics of unsuppressed duct burning turbofan exhaust system

    PACKMAN, A. / KOZLOWSKI, H. / GUTIERREZ, O. | AIAA | 1976