A fixed wing aircraft has a wing with an aerofoil cross-section defining an upper geometric surface and a lower geometric surface which meet at a geometric leading edge of the wing at the intersection with the aerofoil geometric chord. The wing is configured to define an upper aerodynamic surface and a lower aerodynamic surface when the wing is moved through air. The upper aerodynamic surface and the lower aerodynamic surface meet at an aerodynamic leading edge of the wing at the intersection with an attachment line dividing the air that passes over the upper aerodynamic surface from the air that passes over the lower aerodynamic surface. The lower geometric surface adjacent the geometric leading edge has a roughness strip with a step height of at least 50 microns over the lower geometric surface. The roughness strip is located on the lower aerodynamic surface of the wing when the aircraft is flown at a load factor -the ratio of the lift of the aircraft to its weight - of 1g, and the roughness strip is located on the upper aerodynamic surface when the aircraft is flown at a load factor of 1.2g or more.


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    Title :

    AIRCRAFT WING ROUGHNESS STRIP


    Additional title:

    FLUGZEUGFLÜGEL MIT RAUEM STREIFEN
    AILE D'AVION AVEC UNE BANDE RUGUEUSE


    Contributors:

    Publication date :

    2019-05-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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