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1. (WO2016059348) ROTARY ASSEMBLY FOR A TURBINE ENGINE COMPRISING A SELF-SUPPORTED ROTOR COLLAR

Pub. No.:    WO/2016/059348    International Application No.:    PCT/FR2015/052776
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Fri Oct 16 01:59:59 CEST 2015
IPC: F01D 11/00
Applicants: SAFRAN AIRCRAFT ENGINES
SAFRAN CERAMICS
Inventors: EVAIN, Gaël, Frédéric, Claude, Cyrille
CARLOS, Pierre-Louis, Alexandre
GROLEAU, Claire, Charlotte
LEDUC, Mathieu, Louis, Jean
MARSAL, David
Title: ROTARY ASSEMBLY FOR A TURBINE ENGINE COMPRISING A SELF-SUPPORTED ROTOR COLLAR
Abstract:
The invention relates to a rotary assembly for a turbine engine, comprising a rotor with two consecutive rotor stages (10a, 10b) equipped with a plurality of movable vanes (20), and an annular rotor collar (50) connecting the two consecutive rotor stages; a stator comprising a stator stage (11), provided with a plurality of fixed vanes (30) and disposed between the two rotor stages, and an annular stator ring (60) mounted on the fixed vanes. Either the rotor collar or the stator ring bears at least one tab (51) designed to cooperate with an abradable track (62) on the other of the rotor collar and stator ring, such that the rotor collar comprises at at least one of its upstream or downstream ends an inclined contact portion (154) resting on an inclined bearing surface (173a) of the corresponding rotor stage, the bearing surface being the outer surface of a projection (173) extending from a base portion (127) of the corresponding rotor stage.