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:
Aug. 20, 2024
Filed:
Dec. 29, 2022
Applicant:
Rolls-royce North American Technologies Inc., Indianapolis, IN (US);
Inventor:
William Barry Bryan, Indianapolis, IN (US);
Assignee:
Rolls-Royce North American Technologies Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/04 (2006.01); F01D 11/02 (2006.01); F01D 17/16 (2006.01); F02K 3/06 (2006.01);
U.S. Cl.
CPC ...
F02C 7/04 (2013.01); F01D 11/02 (2013.01); F01D 17/162 (2013.01); F02K 3/06 (2013.01); F05D 2240/122 (2013.01); F05D 2240/14 (2013.01); F05D 2240/301 (2013.01); F05D 2240/304 (2013.01); F05D 2240/55 (2013.01); F05D 2260/606 (2013.01);
Abstract
A turbofan engine has a fan portion in fluid communication with a core stream and a bypass stream of air separated by splitters disposed both upstream and downstream of the fan portion. A blade splitter (shroud) on the fan partially spans the fan blade thus separating the core and bypass streams downstream while leaving a gap upstream for communication between the flows. The communication gap expands the operational range of the fan over fans without the communication gap.