This paper investigates the influence of the torque ratio, at constant total thrust, on the interaction noise of a generic counter-rotating open rotor in pusher configuration. It is shown that torque ratio has a small influence on the open-rotor aerodynamic performance but a strong impact on interaction noise at takeoff condition. The noise source mechanisms are investigated in detail and linked with the characteristics of the front rotor blade-tip vortices. Tip vortex characteristics are detailed and compared with analytical vortex models. It is verified that torque ratio variation has no strong impact on the open-rotor aerodynamic performance at cruise condition.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Influence of Torque Ratio on Counter-Rotating Open-Rotor Interaction Noise


    Contributors:

    Published in:

    AIAA Journal ; 53 , 9 ; 2726-2738


    Publication date :

    2015-09-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Influence of Torque Ratio on Counter Rotating Open Rotor Interaction Noise

    Delattre, Gregory / Falissard, Fabrice | AIAA | 2014



    Counter-rotating open-rotor (CROR)

    DANIELSON DAVID R / CARVALHO PAUL A / RAES MARK et al. | European Patent Office | 2017

    Free access

    A Parametric Study of Counter Rotating Open Rotor Noise

    Smith, Dale A. / Filippone, Antonio / Bojdo, Nicholas | AIAA | 2019