VENTILATION AIR SUPPLY DEVICE FOR LOW PRESSURE TURBINE BLADES OF A GAS TURBINE ENGINE; SEGMENT FOR AXIAL STOP AND VENTILATION OF LOW PRESSURE TURBINE BLADES

摘要

The present invention relates to a device for supplying ventilation air in a turbine rotor of a gas turbine engine comprising first and second turbine disks (11, 12) and a ferrule (14) downstream forming together a one-piece drum, the second turbine disk (12) comprising cavities machined in the rim (12J) for accommodating the turbine blades (6), the blades being retained axially by axial retaining segments (18; 18 '). The device is characterized in that at least one piercing (12P) is formed in the collar (14) downstream of the rim (12J) placing the inside of the drum in communication with at least a portion of said cells, a passage (18P; 18'P) being formed in the segments (18; 18 ').