A preliminary design tool for advanced propellers has been developed combining a fast vortex lattice aerodynamic analysis, a fast subsonic point source noise analysis, and an optimization scheme using a conjugate directions method. Twist, chord and sweep distributions are optimized to simultaneously improve both the aerodynamic performance and the noise observed at a fixed relative position.The optimal noise/performance trade-offs for straight and advanced concept blades are presented. The techniques used include increasing the blade number, blade sweep, reducing the rotational speed, shifting the spanwise loading and diameter changes. Some methods yield improvement in both efficiency and noise.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Noise Constraints Effecting Optimal Propeller Designs


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    General Aviation Aircraft Meeting and Exposition ; 1985



    Publication date :

    1985-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    New propeller designs for efficiency

    Burnett, R.F. | Tema Archive | 1980



    Aircraft Propeller Noise

    H. H. Brouwer | NTIS | 1994


    Small aircraft propeller noise with ducted propeller

    Oleson, R. / Patrick, Howard | AIAA | 1998