A thrust reverser assembly 40 (e.g. for a turbofan 30) comprising at least one air flow conditioning plasma actuator 50. The actuator may have a pair of electrodes 52, 54 spaced by a dielectric layer 56 and a working gap 58, ionising air molecules to form low temperature plasma. The assembly may comprise a cascade with an array of aerofoil vanes 44 and an array of perpendicular airfoil ribs. Plasma actuators may be provided on the vanes and ribs, inducing airflow acceleration, energising a boundary layer. The ribs and/or plasma actuators may distort the efflux pattern (62, figure 4). Plasma actuators may be provided on a ramped surface 46 forming the cascade inlet and on an airflow supply duct, accelerating airflow to counteract swirl in the duct. A plasma actuator may be provided adjacent a blocker door deployable to deflect airflow in the duct. The plasma actuator may accelerate the air away from a gap, joint or step associated with the blocker door, reducing aerodynamic losses. The plasma actuator may alter airflow direction to avoid surface impingement, reducing noise. The plasma actuators may provide acoustic suppression by active noise cancelling, operating at the same frequency as airflow pressure fluctuations.


    Access

    Download


    Export, share and cite



    Title :

    Thrust reverser assembly


    Contributors:

    Publication date :

    2017-11-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02K JET-PROPULSION PLANTS , Strahltriebwerke / B64C AEROPLANES , Flugzeuge / F15D FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS , Strömungsdynamik, d.h. Verfahren oder Vorrichtungen zum Beeinflussen der Strömung von Gasen oder Flüssigkeiten



    Thrust reverser sliding door assembly

    CHARRON MIKE / GUKEISEN ROBERT L | European Patent Office | 2019

    Free access

    THRUST REVERSER

    HIGGINS ROGER | European Patent Office | 2017

    Free access

    THRUST REVERSER ACTUATING

    KOPECEK JOSEPH THOMAS / SWEET JULIAN | European Patent Office | 2017

    Free access

    Aircraft propulsion assembly with thrust reverser

    BERJOT MICHAEL / GOUGNEAU GUILLAUME / COMBES PIERRE-ALAIN et al. | European Patent Office | 2024

    Free access

    THRUST REVERSER SYSTEM

    BOL ERIC D | European Patent Office | 2017

    Free access