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. 04, 2020
Filed:
Dec. 18, 2015
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Frederick M. Schwarz, Glastonbury, CT (US);
David A. Welch, Quaker Hill, CT (US);
Assignee:
Raytheon Technologies Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/52 (2006.01); F02C 7/04 (2006.01); F02C 7/36 (2006.01); F04D 29/32 (2006.01); F04D 29/64 (2006.01); F02C 3/04 (2006.01); F02K 3/06 (2006.01); F04D 19/00 (2006.01); F04D 25/02 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 29/526 (2013.01); F02C 3/04 (2013.01); F02C 7/04 (2013.01); F02C 7/36 (2013.01); F02K 3/06 (2013.01); F04D 19/002 (2013.01); F04D 25/028 (2013.01); F04D 29/321 (2013.01); F04D 29/644 (2013.01); F04D 29/663 (2013.01); F05D 2220/32 (2013.01); F05D 2220/36 (2013.01); F05D 2230/70 (2013.01); F05D 2250/283 (2013.01); F05D 2260/30 (2013.01); F05D 2260/96 (2013.01);
Abstract
A gas turbine engine comprises a fan rotor having fan blades received within an outer nacelle, and the outer nacelle having an inner surface. At least a portion of the nacelle inner surface extends radially inwardly to be radially inward of an outer diameter of the fan blades. The inner surface of the nacelle is formed with a trench, which extends into the inner surface to a radially outer extent that is spaced radially outward of the outer diameter of the fan blades.