A method of forming sheet metal skins of the inner fixed structure of a blocker door thrust reverser assembly having convex and concave curvatures. The method includes plastically stretching a sheet of metal about a mandrel having a chordwise central first axis to form a substantially convex shape. The method further includes the addition of features after the substantially convex shape is formed to facilitate plastically stretching a portion or portions of the substantially convex shape into a substantially concave shape about an axis that is substantially parallel to the chordwise central first axis.


    Access

    Download


    Export, share and cite



    Title :

    Stretch forming method for a sheet metal skin with convex and concave curvatures


    Contributors:

    Publication date :

    2022-05-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



    Stretch Forming Method for a Sheet Metal Skin with Convex and Concave Curvatures

    STEWART III JOHN RALPH | European Patent Office | 2020

    Free access

    Stretch forming of sheet metal

    Tomasek, J. | Tema Archive | 1989



    Simulation validation of advanced sheet metal under stretch forming

    Hu,C.Q. / Rees,D.W. / Univ.of Warwick,GB et al. | Automotive engineering | 2006


    Automobile interior trim part with concave-convex wood grains and forming method thereof

    WANG HUA / CHEN YING | European Patent Office | 2020

    Free access