US 12,134,460 B2
Blade comprising a composite material structure and associated manufacturing method
Vincent Joudon, Moissy-Cramayel (FR); Vivien Mickaël Courtier, Moissy-Cramayel (FR); and Clément Pierre Postec, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/793,877
Filed by Safran Aircraft Engines, Paris (FR)
PCT Filed Jan. 19, 2021, PCT No. PCT/FR2021/050090
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/148750, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2000527 (FR), filed on Jan. 20, 2020.
Prior Publication US 2023/0044779 A1, Feb. 9, 2023
Int. Cl. B64C 11/26 (2006.01); B29C 70/24 (2006.01); B29C 70/34 (2006.01); B29L 31/08 (2006.01); F01D 5/28 (2006.01)
CPC B64C 11/26 (2013.01) [B29C 70/24 (2013.01); B29C 70/345 (2013.01); F01D 5/282 (2013.01); B29L 2031/082 (2013.01); F05D 2220/323 (2013.01); F05D 2260/36 (2013.01); F05D 2300/6034 (2013.01); F05D 2300/612 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A vane comprising:
a composite material structure comprising a fiber reinforcement obtained by three-dimensional weaving and a matrix in which the fiber reinforcement is embedded, the composite material structure comprising a blade part with an aerodynamic profile and a vane root part, the vane root part comprising two portions each connected to the blade part;
a vane root fastening part comprising a wall defining a cavity and an opening formed in the wall, the composite material structure extending through the opening such that the blade part is located outside the fastening part and the vane root part is located within the cavity, the vane root fastening part further comprising a shoulder extending from the wall into the cavity;
a base disposed in the cavity, the base comprising a support configured to abut the shoulder of the vane root fastening part and a passage formed in the support, the two portions of the vane root part of the composite material structure extending through the passage; and
a locking part disposed in the cavity between the two portions of the vane root part, such that each portion of the vane root part is pressed by the locking part against the support; and
an expansion foam disposed in the cavity between the base and the opening.