US 12,291,976 B2
Rotor wheel for an aircraft turbine engine
Jean-Luc Breining, Moissy-Cramayel (FR); Denis Daniel Jean Boisseleau, Moissy-Cramayel (FR); Thomas Gabriel Elie Gatteau, Moissy-Cramayel (FR); and Yvan Ludovic Lameignere, Moissy-Cramayel (FR)
Assigned to SAFRAN HELICOPTER ENGINES, Bordes (FR)
Appl. No. 18/566,972
Filed by SAFRAN HELICOPTER ENGINES, Bordes (FR)
PCT Filed May 31, 2022, PCT No. PCT/FR2022/051034
§ 371(c)(1), (2) Date Dec. 4, 2023,
PCT Pub. No. WO2022/258911, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 2106011 (FR), filed on Jun. 8, 2021.
Prior Publication US 2024/0263559 A1, Aug. 8, 2024
Int. Cl. F01D 5/30 (2006.01); F01D 5/32 (2006.01); F01D 11/00 (2006.01)
CPC F01D 5/3007 (2013.01) [F01D 5/326 (2013.01); F01D 11/006 (2013.01); F05D 2220/323 (2013.01); F05D 2260/30 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A rotor wheel for an aircraft turbine engine, the wheel comprising:
a disc having a main axis (A) and slots at an external periphery, the slots extending along said axis and each comprising a bottom and two lateral flanks;
vanes mounted in the slots of the disc, each vane comprising a blade connected by a platform to a root that is configured to be mounted in a form-fitting manner in one of the slots, the root of each of the vanes comprising, at a radially internal end, a lobe, a first axial end of which comprises a circumferential notch and a second axial end of which, opposite the first end, comprises a cleat oriented radially inwards and configured to bear axially against a first face of the disc; and
a split annular ring engaged in the notches of the vanes and pressed axially against a second face of the disc, the second face being opposite the first face,
wherein the lobe of the root of each of the vanes comprises, between said first and second ends, a projecting bulb that is oriented radially inwards and has a surface configured to bear radially against the bottom of the corresponding slot,
wherein said bulb comprises two radial faces, respectively upstream and downstream, which are connected together by a convex curved face complementary to the bottom of the slot, and
wherein the downstream radial face of the bulb is connected by an inclined face to said notch.