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:
Jul. 06, 2021
Filed:
Nov. 01, 2017
Applicant:
The Boeing Company, Chicago, IL (US);
Inventors:
John C. Vassberg, Long Beach, CA (US);
Mark DeHaan, Rancho Palos Verdes, CA (US);
Dino Roman, Lake Forrest, CA (US);
Assignee:
The Boeing Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02K 1/66 (2006.01); F04D 29/52 (2006.01); F04D 29/36 (2006.01); F02K 1/46 (2006.01); F02K 1/48 (2006.01); F02C 3/04 (2006.01); F01D 25/24 (2006.01);
U.S. Cl.
CPC ...
F02K 1/66 (2013.01); F02K 1/46 (2013.01); F02K 1/48 (2013.01); F04D 29/362 (2013.01); F04D 29/522 (2013.01); F01D 25/24 (2013.01); F02C 3/04 (2013.01); F05D 2220/323 (2013.01); F05D 2240/12 (2013.01); F05D 2250/16 (2013.01); F05D 2250/184 (2013.01); F05D 2250/61 (2013.01);
Abstract
An ultrashort nacelle configuration employs a fan cowl having an exit plane and a serrated trailing edge. A variable pitch fan is housed within the fan cowl. The variable pitch fan has a reverse thrust position inducing a reverse flow through the exit plane and into the fan cowl. The serrated trailing edge forms a plurality of vortex generators configured to induce vortices in the reverse flow.