Safran Aircraft Engines

Helene Myriam Condat

Nicolas Xavier Trappier

Stéphane Pierre Guillaume Blanchard

Coralie Cinthia Guerard

Laurent Paul François Perrot

Patrice Jean-Marie Rosset

Sebatien Prestel

A turbomachine includes a low-pressure shaft that drives a fan shaft in rotation by a coupling assembly including a first shaft on which are formed plural first axial grooves, a second shaft on which are formed plural second axial grooves, and a coupling device including rolling elements and an annular cage positioned between the first shaft and the second shaft. The rolling elements are positioned between one of the first axial grooves and one of the second axial grooves to couple in rotation the first and the second shaft. Each first and second groove has a first and a second substantially planar surface inclined with respect to one another and extending along the axis.

Torque transmission device with reduced friction

The invention relates to an assembly which includes: two rotationally symmetrical components () for supporting the blades of a turbine engine, arranged one inside the other concentrically about a turbine engine axis, and a system () for locking the components () such as to prevent the relative translation of same in the axial and radial directions relative to said axis, the system including a slotted ring () comprising a U-shaped cross-section suitable for receiving one end of the components (), the assembly being characterized in that the ring () and one of the components () are shaped such as to allow the ring to be interlocked on the component, and in that the locking system () also includes a member for stopping the rotation of the ring relative to the component with which the latter is interlocked. The invention further relates to a method for assembling such an assembly.

Locking of blade-supporting components

Growing community of inventors

Moissy-Cramayel, France

Helene Myriam Condat