Snecma

Stevan Le Goff

Olivier Belmonte

Thomas Langevin

Paul Rodrigues

A cooling device for cooling the slots of a turbomachine rotor disk is provided. The turbomachine includes an upstream rotor disk having a fastener flange with a periphery that is festooned; a downstream rotor disk; an endplate for holding blades and arranged around the ring of the downstream disk and co-operating therewith to form an air diffusion cavity; a cone for driving disks in rotation and having a fastener flange with a periphery that is festooned; and a plurality of bolted connections passing from upstream to downstream through the fastener flanges of the upstream disk and of the cone, the fastener flange of the endplate, and the fastener flange of the downstream disk. The fastener flange of the endplate is pierced by ventilation orifices opening out into the air diffusion cavity, the cavity opening out into the slots of the downstream disk at their upstream ends.

Cooling device for cooling the slots of a turbomachine rotor disk downstream from the drive cone

A radial annular flange including in inner or outer periphery alternating solid portions including orifices for passing fastener bolts, and hollow portions having bottoms that are substantially flat. The bottom of at least one keying hollow portion is situated radially inside, or outside, respectively, a circle centered on the axis of the flange and externally, or respectively internally, tangential to the orifices. Two hollow portions are situated on either side of the keying hollow portion having bottoms of concave curved shapes situated radially on the outside, or respectively on the inside, relative to the flat bottoms of the other hollow portions.

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Vaux Le Penil, France

Stevan Le Goff