US 12,270,318 B1
Hybrid metal/composite blade with textile orientation adapted to mechanical stresses
Pierre-Antoine Bossan, Moissy-Cramayel (FR); and François Charleux, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/835,233
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Jan. 27, 2023, PCT No. PCT/FR2023/050107
§ 371(c)(1), (2) Date Aug. 1, 2024,
PCT Pub. No. WO2023/148443, PCT Pub. Date Aug. 10, 2023.
Claims priority of application No. 2200933 (FR), filed on Feb. 2, 2022.
Int. Cl. F01D 5/28 (2006.01); F01D 5/14 (2006.01); F01D 25/00 (2006.01)
CPC F01D 5/282 (2013.01) [F01D 5/147 (2013.01); F01D 25/005 (2013.01); F05D 2220/30 (2013.01); F05D 2240/12 (2013.01); F05D 2240/30 (2013.01); F05D 2300/603 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A blade or vane made of a composite material, the blade or vane comprising:
a fibrous reinforcement densified by an organic matrix and comprising a skin and a core,
a metal element attached to the fibrous reinforcement on an attachment zone of the skin;
wherein the reinforcement comprises, in at least one region of the attachment zone, a surface textile orientation adapted to the direction of mechanical stresses by having first skin threads that extend in a main mechanical stress direction and that are bonded to second skin threads transverse to the first threads, said first skin threads being a majority of all the threads on the surface of said region of the attachment zone, and wherein a textile orientation of the core is different than the surface textile orientation;
wherein:
the metal element is a protective foil covering a leading edge of the blade or vane, and the main mechanical stress direction corresponding to an axial direction of the blade or vane which corresponds to a chord of the blade or vane, or
the blade or vane being a blade and defining an internal cavity and the metal element being a spar inserted in this internal cavity, the spar defining a root intended to be fixed to a rotating disk, the main mechanical stress direction corresponding to a radial direction of the blade which corresponds to an axis joining the root to a top of the blade.