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.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Preliminary measurements of aircraft airframe noise with the NASA CV-990 aircraft


    Contributors:

    Publication date :

    1976-01-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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

    K. C. White / P. L. Lasagna / T. W. Putnam | NTIS | 1976


    Measurements and analysis of aircraft airframe noise

    Putnam, T. W. / Lasagna, P. L. / White, K. C. | NTRS | 1975


    Measurements and analysis of aircraft airframe noise

    PUTNAM, T. / LASAGNA, P. / WHITE, K. | AIAA | 1975


    Propulsion Airframe Aeroacoustics and Aircraft System Noise Flight Research Test: NASA Overview

    Thomas, Russell H. / Guo, Yueping / Clark, Ian et al. | British Library Conference Proceedings | 2022