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:
May. 21, 2019
Filed:
Nov. 23, 2015
Applicant:
Rolls-royce Corporation, Indianapolis, IN (US);
Inventors:
Roy David Fulayter, Avon, IN (US);
Aaron Joseph King, Greenwood, IN (US);
Bronwyn Power, Indianapolis, IN (US);
Greg Hebert, Indianapolis, IN (US);
Assignee:
ROLLS-ROYCE CORPORATION, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02C 7/042 (2006.01); F01D 5/14 (2006.01); F01D 5/20 (2006.01); F01D 5/22 (2006.01); F01D 1/04 (2006.01);
U.S. Cl.
CPC ...
F02C 7/042 (2013.01); F01D 1/04 (2013.01); F01D 5/143 (2013.01); F01D 5/20 (2013.01); F01D 5/225 (2013.01); F05D 2250/00 (2013.01); F05D 2250/712 (2013.01); Y02T 50/673 (2013.01);
Abstract
A turbine engine casing flow-path segment that is locally diffusing, followed by a flow-path segment contracting in the vicinity of a fan blade. This contraction accelerates the fluid flow axially forward of the fan blade leading edge at the tip and converges with the linear flow-path aft of the fan blade leading edge but forward of the fan blade trailing edge. More diffused fluid flow results in increased flow capacity of the fan, and increased fan efficiency.