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US 12,584,492 B2Granted
Centrifugal compressor impeller and method of producing the same
AssigneePratt & Whitney Canada Corp.
InventorsChao Zhang, Yosief Mebrahtu
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AssigneePratt & Whitney Canada Corp.
InventorsChao Zhang, Yosief Mebrahtu
Estimating the term…
A method of producing a centrifugal compressor impeller is provided. The impeller includes a hub with a rotational axis, a forward surface, and an aft surface. The aft surface extends between an outer radial surface of the impeller and a bore centered on the rotational axis. The method includes: analyzing the impeller to determine a stress field having tangential stress data values and radial stress data values as a function of radial position within the impeller hub and as a function of axial position within the impeller hub; contouring the aft surface so that the impeller hub has radial stress data values less than tangential stress data values for any radial position of the hub during operation of the impeller; and producing the impeller with the contoured aft surface.
A method of producing a centrifugal compressor impeller, the impeller including a hub with a rotational axis, a forward surface, and an aft surface, the aft surface extending between an outer radial surface of the impeller and a bore centered on the rotational axis, the method comprising:
Dependencies are inferred from the claim text.