Patent ID: 11905846
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B  Y | IPC F

Claim 0:
1. A turbomachine hub to be mounted in rotation along a longitudinal axis of a turbomachine, the turbomachine hub comprising a main body disposed around the longitudinal axis, of which an outer surface has a plurality of housings;
a plurality of platforms comprising an outer surface delimited by a circular outer edge of radius r, each platform being disposed in a corresponding housing of the plurality of housings of the main body, and intended configured to receive a variable pitch blade according to a pitch change axis, each platform being centered and movable in rotation along the pitch change axis;
wherein, for each platform, at least part of the outer surface of each platform and of the main body of the turbomachine hub comprises a curvature defined by a same spherical portion of radius R and center C, the at least part of the outer surface being situated at the outer edge of each platform, in a junction zone of each platform and of the main body of the turbomachine hub,
the center C being situated on the pitch change axis outside a hemispherical zone delimited between the longitudinal axis and the outer surface of each platform.