Set of rotor disks for a turbine engine

摘要

A set of rotor disks for a turbine engine, or an airplane turboprop or turbojet, the set including disks rigidly connected together by bolts and shaped at their outer peripheries with slots for mounting blade roots. Each disk includes a rim extending radially and not having any axial flanges, two consecutive disks being connected together with help of an axially-extending ferrule that is fastened to the rims of the disks and that is fitted with a holder plate for holding the blade roots of the downstream disk.

主权项

1. A set of rotor disks for a turbine engine, or an airplane turboprop or a turbojet, the set comprising:
an upstream disk and a downstream disk rigidly connected together by bolts and shaped at outer peripheries thereof with slots for mounting blade roots, each disk including a rim extending radially and free of any axial flanges; and an axially-extending ferrule that is fastened to the rims of the disks and that is fitted with a holder plate for holding blade roots of the downstream disk, wherein the ferrule includes a frustoconical middle portion, an upstream cylindrical margin at an upstream end of the ferrule, and a downstream cylindrical margin at a downstream end of the ferrule, the upstream and downstream cylindrical margins being pressed against the rims of the upstream and downstream disks, respectively, and the downstream end of the ferrule being radially outward of the upstream end of the ferrule, and wherein the ferrule includes cooling openings near the downstream end, the openings opening out into a ventilation space formed upstream from the downstream disk and defined by the ferrule and the holder plate for holding the blade roots.