Flight tests were conducted in a CV-990 jet transport with engines at idle power to investigate aircraft airframe noise. Test results showed that airframe noise was measured for the aircraft in the landing configuration. The results agreed well with the expected variation with the fifth power of velocity. For the aircraft in the clean configuraton, it was concluded that airframe noise was measured only at higher airspeeds with engine idle noise present at lower speeds. The data show that landing gear and flaps make a significant contribution to airframe noise. (Author)


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    Titel :

    Preliminary Measurements of Aircraft Airframe Noise with the NASA CV-990 Aircraft


    Beteiligte:
    K. C. White (Autor:in) / P. L. Lasagna (Autor:in) / T. W. Putnam (Autor:in)

    Erscheinungsdatum :

    1976


    Format / Umfang :

    18 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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