The aeroacoustics of advanced, high speed propellers (propfans) are reviewed from the perspective of NASA research conducted in support of the Advanced Turboprop Program. Aerodynamic and acoustic components of prediction methods for near and far field noise are summarized for both single and counterrotation propellers in uninstalled and configurations. Experimental results from tests at both takeoff/approach and cruise conditions are reviewed with emphasis on: (1) single and counterrotation model tests in the NASA Lewis 9 by 15 (low speed) and 8 by 6 (high speed) wind tunnels, and (2) full scale flight tests of a 9 ft (2.74 m) diameter single rotation wing mounted tractor and a 11.7 ft (3.57 m) diameter counterrotation aft mounted pusher propeller. Comparisons of model data projected to flight with full scale flight data show good agreement validating the scale model wind tunnel approach. Likewise, comparisons of measured and predicted noise level show excellent agreement for both single and counterrotation propellers. Progress in describing angle of attack and installation effects is also summarized. Finally, the aeroacoustic issues associated with ducted propellers (very high bypass fans) are discussed.


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    Titel :

    Aeroacoustics of advanced propellers


    Beteiligte:

    Kongress:

    Congress of the International Council of Aeronautical Sciences ; 1990 ; Stockholm, Sweden


    Erscheinungsdatum :

    1990-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Aeroacoustics of Advanced Propellers

    J. F. Groeneweg | NTIS | 1990


    Aeroacoustics of advanced propellers

    Groeneweg, John F. | NTRS | 1990



    Aeroacoustics of High-Speed Propellers and Fans

    Grighton, D. G. / Israel Society of Aeronautics and Astronautics | British Library Conference Proceedings | 1996


    Computational Aeroacoustics Study of Propellers with Vibrational Motion

    Li, Yuhong / Wu, Han / Jiang, Hanbo et al. | AIAA | 2023