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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.:

US 11325699 B1

PDFFull Text
Date of Patent:
May. 10, 2022

Filed:

Mar. 29, 2020

Ducted fans having edgewise flow augmentation

Applicant:

Textron Innovations Inc., Providence, RI (US);

Inventors:

Daniel Bryan Robertson, Southlake, TX (US);

Kirk Landon Groninga, Keller, TX (US);

Matthew Edward Louis, Fort Worth, TX (US);

Assignee:

Textron Innovations Inc., Providence, RI (US);

Attorney:

Lawrence Youst PLLC

Primary Examiner:

Brian M O'Hara

Int. Cl.
CPC ...
B64C 11/00 (2006.01); B64C 21/04 (2006.01); B64C 29/00 (2006.01); B64D 27/16 (2006.01); B64C 11/48 (2006.01); B64D 35/06 (2006.01); B64D 35/02 (2006.01); B64C 27/22 (2006.01); B64D 33/04 (2006.01); B64D 35/04 (2006.01); B64C 3/10 (2006.01); B64C 19/00 (2006.01); B64C 27/26 (2006.01); B64C 27/30 (2006.01); B64C 9/20 (2006.01); B64C 21/08 (2006.01); B64C 27/78 (2006.01); B64C 39/10 (2006.01); B64C 9/18 (2006.01); B64C 15/02 (2006.01); B64C 15/14 (2006.01); B64C 21/00 (2006.01);
U.S. Cl.
CPC ...
B64C 29/0033 (2013.01); B64C 3/10 (2013.01); B64C 9/18 (2013.01); B64C 9/20 (2013.01); B64C 11/001 (2013.01); B64C 11/48 (2013.01); B64C 15/02 (2013.01); B64C 19/00 (2013.01); B64C 21/04 (2013.01); B64C 21/08 (2013.01); B64C 27/22 (2013.01); B64C 27/26 (2013.01); B64C 27/30 (2013.01); B64C 27/78 (2013.01); B64C 29/00 (2013.01); B64C 29/0016 (2013.01); B64C 29/0025 (2013.01); B64C 29/0083 (2013.01); B64C 39/10 (2013.01); B64D 27/16 (2013.01); B64D 33/04 (2013.01); B64D 35/02 (2013.01); B64D 35/04 (2013.01); B64D 35/06 (2013.01); B64C 15/14 (2013.01); B64C 21/00 (2013.01); B64C 2230/04 (2013.01); B64C 2230/06 (2013.01); B64C 2230/16 (2013.01); B64C 2230/28 (2013.01);
Abstract

A ducted fan assembly for generating thrust during edgewise forward flight. The ducted fan assembly includes a duct having an inlet with a leading portion and a diffuser with a trailing portion during the edgewise forward flight. A fan disposed within the duct is configured to rotate relative to the duct about a fan axis to generate an airflow through the duct from the inlet to the diffuser. An active flow control system includes a plurality of injectors including a first injector configured to inject pressurized air substantially tangential with the leading portion of the inlet and a second injector configured to inject pressurized air substantially tangential with the trailing portion of the diffuser such that when the injectors are injecting pressurized air, flow separation of the airflow at the leading portion of the inlet and the trailing portion of the diffuser is reduced.

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