F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 5/30 (2006.01)
Patent
CA 2470073
The invention relates to a bladed disk for a turbomachine, the disk including blades (1) which extend into a conical stream and which are held in a peripheral groove (7) of said disk (12) by hammerhead type fasteners, each of said blades further including a platform (30) whose radially-outer face (30a) defines the boundary of the gas flow stream and whose radially-inner face (30b) presents an upstream rib (32) and a downstream rib (33) disposed in planes that are perpendicular to the axis of rotation of said disk and that are radially adjacent respectively to an upstream ring (20) and a downstream ring (21) formed at the periphery of said disk (12) on either side of said groove (7) in order to provide leaktightness in these zones, wherein the thickness of the downstream rib (33) in the axial direction is greater than the thickness of the upstream ring (21).
L'invention concerne un disque aubagé de turbomachine comportant des aubes (1) qui s'étendent dans une veine conique et qui sont retenues dans une gorge périphérique (7) dudit disque (12) par des attaches du type marteau, chacune desdites aubes comportant en outre une plate-forme (30) dont la face radialement extérieure (30a) délimite la veine du flux gazeux et dont la face radialement intérieure (30b) présente une nervure amont (32) et une nervure aval (33) disposes dans des plans perpendiculaires à l'axe de rotation dudit disque et jouxtant respectivement un anneau amont (20) et un anneau aval (21) formés à la périphérie dudit disque (12) de part et d'autre de ladite gorge (7), afin d'assurer d'étanchéité dans ces zones, caractérisé par le fait que l'épaisseur de la nervure aval (33), dans la direction axiale, est supérieure à l'épaisseur de l'anneau aval (21).
Follonier Christophe
Lejars Claude
Mace Jerome
Pontoizeau Bruce
Reghezza Patrick
Robic
Snecma
Snecma Moteurs
LandOfFree
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