Patent ID: 8915711
Filing Date: 2014-12-23
Classification: F04D,F05D

Abstract:
1. A centrifugal compressor wheel comprising: a hub; a web extending radially from the hub; and a plurality of blades carried by the wheel; wherein the web includes an erosion indicator of the wheel, wherein the erosion indicator comprises at least one rib projecting radially from a peripheral edge of the web at a location of a trailing edge of one of the blades, wherein the rib presents an axial thickness that is less than an axial thickness of the web so as to form a step between a flat of the rib and a surface of the web from which the blades extend, and wherein the rib presents a radial extent, the step being provided on an upstream face of the radial extent, and an outer radial face of the radial extent directly facing a diffuser of a compression stage so as to present a radial space therebetween.