Safran Aircraft Engines

Antoine Hervé Dos Santos

Nicolas Xavier Trappier

Stéphane Pierre Guillaume Blanchard

Patrick Jean Laurent Sultana

Joao Antonio Amorim

Quentin De Richaud

Pascal Grégory Casaliggi

The invention relates to an assembly for a turbine engine, comprising a radially inner shaft () and a radially outer shaft (), said shafts () being coaxial and extending along an axis (X), means () for coupling said inner and outer shafts () in rotation, means () for axially holding the inner shaft () relative to the outer shaft (), means for centring the inner shaft () relative to the outer shaft (), characterised in that the centring means comprise a shim () for radial centring and for axial positioning, this shim being frustoconical and interposed between a frustoconical centring surface () of the inner shaft () and a corresponding frustoconical centring surface () of the outer shaft ().

Assembly for a turbine engine

An assembly for a turbine engine turbine includes a turbine rotor disc centered on a longitudinal axis and a turbine shaft centered on the longitudinal axis and driven in rotation by the rotor disc. Torque from the rotor disc is transmitted to the shaft, wherein the rotor disc is locked in translation relative to the shaft in the direction of the longitudinal axis by a screwed member on the shaft. Torque from the rotor disc is transmitted from the rotor disc to the screwed member when the torque ceases being transmitted from the rotor disc to the shaft. The screwed member has an unscrewing direction identical to the direction of rotation of the rotor disc in operation.

Turbine overspeed disengagement device for a turbine engine

The present invention relates to a rotor () of a turbomachine turbine, comprising a rotor disc () and a plurality of blades () distributed at its periphery, said rotor disc () comprising a plurality of mainly axial cells (), each blade () comprising a root (), retained in one of the cells () of said rotor disc, each root being dimensioned so as to form a space () between the bottom of the cell () and the radially inner face () of the root. This rotor is remarkable in that said root comprises a mainly axial blind hole () opening onto the upstream face of the root and a plurality of mainly radial air ejection orifices (), each air ejection orifice () opening into said blind hole () and onto the radially inner face () of the root located facing the bottom of the cell ().

Growing community of inventors

Moissy-Cramayel, France

Antoine Hervé Dos Santos