Much attention has been given to the jet noise problem since the jet engine became a power plant for aircraft after the Second World War, but there has been little modeling progress for realistic geometries. Scaling laws such as Lighthill's famous P oc U8 sound-power scaling with jet exit velocity that are derived from these theories have been enormously successful in motivating higher bypass engines to reduce noise, but they have offered little further guidance for improvements through nozzle geometries or active flow control. The aircraft noise problem has recently become more pressing as both military and civilian use of air space increase. At present, the noise of some military aircraft is so intense that it can actually fatigue aircraft components. Airbase noise is becoming an important issue with several (some successful) lawsuits involved. Personnel are also affected - early predictions/results suggest that the JSF landing in vertical mode will be too loud for ground personnel to tolerate. The civilian aerospace sector faces their own serious aircraft noise problems. Technology transfer from the present work supports intense noise control efforts at domestic aerospace companies as well.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Aeroacoustic Optimization and Control


    Beteiligte:
    M. Wei (Autor:in) / J. B. Freund (Autor:in) / J. Kim (Autor:in)

    Erscheinungsdatum :

    2003


    Format / Umfang :

    152 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Aeroacoustic Optimization of VTOL Rotor Blades

    Clarke, Matthew A. / Botero, Emilio | AIAA | 2023


    Unsteady Adjoint Method for Aeroacoustic Propeller Optimization

    Soemarwoto, Bambang / van der Ven, Harmen / Kok, Johan et al. | AIAA | 2021


    UNSTEADY ADJOINT METHOD FOR AEROACOUSTIC PROPELLER OPTIMIZATION

    Soemarwoto, Bambang / Ven, Harmen Van Der / Kok, Johan et al. | TIBKAT | 2021


    Propeller aeroacoustic methodologies

    Korkan, K. D. / Gregorek, G. M. | NTRS | 1980


    Aeroacoustic control of fan tone noise

    Namba, Masanobu / Murahashi, Akihiro | Tema Archiv | 2008