Patent ID: 11859513
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A movable vane for a wheel of an aircraft turbomachine, said vane comprising an aerodynamic blade extending along a stacking axis and an outer heel delimiting said blade along said stacking axis, said heel comprising a platform and an upstream lip and a downstream lip, the upstream and downstream lips protruding radially outward from said platform, the downstream lip being spaced from the upstream lip and being arranged downstream of the upstream lip, the upstream lip being inclined upstream at an acute angle to said stacking axis, said upstream lip extending circumferentially along an axis of elongation, wherein the heel comprises a row of ribs spaced from each other, said row comprising at least two ribs, said row of ribs extending along said axis of elongation, each rib extending along said stacking axis from said platform to said upstream lip, each rib being arranged upstream of the upstream lip according to the direction of gas flow around said blade so as to generate turbulence upstream of said upstream lip,
wherein at least one of the ribs is inclined at an acute angle with respect to said axis of elongation, said acute angle being defined from the axis of elongation to a side wall of the corresponding rib, said acute angle being measured in a plane perpendicular to said stacking axis.