Gas turbine engine rotor wheel having composite material blades with blade-root to disk connection being obtained by clamping

摘要

A rotor wheel for a gas turbine engine, the wheel including: a metal holder disk including a plurality of teeth at its periphery, the teeth extending radially outwards from the disk; a plurality of composite material blades, each blade including a root engaged between two adjacent teeth of the holder disk and that is held against the teeth by a pivot connection; a clamp disk including a plurality of teeth at its periphery extending in an axial direction, the clamp disk being fastened against the holder disk and on the same axis, with each of its teeth taking up a circumferential position between a blade root and a tooth of the holder disk; and a mechanism exerting a clamping force in a circumferential direction urging the teeth of the clamp disk against the blade roots.

主权项

1. A rotor wheel for a gas turbine engine, the wheel comprising:
a metal holder disk including a plurality of teeth at an outer radial periphery of the holder disk, the teeth of the holder disk being planar having first and second side faces which are parallel to each other and extending radially outwards from the holder disk; a plurality of composite material blades, each blade including a root that is planar having first and second side faces which are parallel to each other and engaged between two adjacent teeth of the holder disk and that is held against the teeth by a pivot connection such that each respective blade root pivots around an axis passing through the teeth holding the respective blade root; and a clamp disk including a plurality of teeth at a periphery of the clamp disk, the teeth of the clamp disk being planar and extending in an axial direction, the clamp disk being fastened against the holder disk and on a same axis, with each of the teeth of the clamp disk taking up a circumferential position between one of the blade roots and one of the teeth of the holder disk, wherein the first side face of each blade root bears flatly against the first side face of one of the teeth of the holder disk, and the second side face of each blade root, opposite from the first side face of the respective blade root, bears flatly against a side face of one of the teeth of the clamp disk.