Safran Aircraft Engines

Jerome Jean-Yves Talbotec

William Henri Joseph Riera

Julien Roger Marcel Marty

Part comprising a wall which comprises a first zone (), a first zone () and the second zone (), a network of riblets being formed on the first zone (), the second zone () and also on the transition zone () so as to reduce the drag of the part when a flow of air flows along said wall; the height, the width and the spacing of the riblets formed on the transition zone () changing along said transition zone () so as to pass from the height, width and spacing of the riblets formed on the first zone at a first end of the transition zone to the height, width and spacing of the riblets formed on the second zone () at a second end of the transition zone (), the transition zone () comprising a central portion on which the riblets comprise on one hand the height and the width that are respectively equal to the height and width of the riblets on the first zone (), and on the other hand a spacing equal to the spacing of the riblets of the second zone ().

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Moissy-Cramayel, France

Jerome Jean-Yves Talbotec