The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2018
Filed:
Oct. 13, 2014
United Technologies Corporation, Farmington, CT (US);
John Craig Lentz, Poway, CA (US);
United Technologies Corporation, Farmington, CT (US);
Abstract
A compressor impeller for an Auxiliary Power Unit (APU) includes a hub including a plurality of splitter blades interposed between a plurality of main blades. Each of the plurality of splitter blades and the plurality of main blades include a first surface and a second surface. The first surface and the second surface of the plurality of splitter blades are defined as a set of X-coordinates, Y-coordinates and Z-coordinates set out in Table S-1 and S-2 scaled by a desired factor. The X-coordinate being in an axial direction, the Y-coordinate being in a first radial direction and the Z-coordinate being in a second radial direction transverse to the first radial direction. Each of the plurality of splitter blades includes a contour between the tip and the leading edge. An auxiliary power unit and method are also disclosed.