公开(公告)号：US11499432B2

公开(公告)日：2022-11-15

申请号：US15741374

申请日：2016-07-01

Applicant: SAFRAN AIRCRAFT ENGINES

Inventor： Vivien Mickaël Courtier ,  Adrien Louis Nicolas Laurenceau ,  Dominique Gerhadt Mayhew ,  Jonathan Evert Vlastuin

IPC: F01D5/16 ,  F01D5/14 ,  B64D27/00

Abstract: A method of altering the twisting relationship for the aerodynamic surface of a fan blade of a gas turbine engine, wherein the following steps are performed: establishing, for a portion of the aerodynamic surface of the fan blade, an alteration relationship defined by variation of a pitch angle of the blade as a function of radial height along the blade, the alteration relationship including alterations that are each defined by a height along with the radial height of the fan blade and by an amplitude; and applying the alteration relationship as established in this way to an initial twisting relationship of the fan blade so as to obtain an altered twisting relationship for the fan blade, the initial twisting relationship being defined by a polynomial for the radial height of the fan blade as a function of its pitch angle.