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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 10316753 B1

PDFFull Text
Date of Patent:
Jun. 11, 2019

Filed:

Sep. 19, 2014

Pre-cooler inlet ducts that utilize active flow-control and systems and methods including the same

Applicant:

The Boeing Company, Huntington Beach, CA (US);

Inventors:

Nathan O. Packard, Lake Stevens, WA (US);

Robert H. Willie, Bothell, WA (US);

Paul R. Tretow, Mukilteo, WA (US);

Assignee:

The Boeing Company, Chicago, IL (US);

Attorney:

DASCENZO Intellectual Property Law, P.C.

Primary Examiner:

Gerald L Sung

Assistant Examiner:

Alain Chau

Int. Cl.
CPC ...
F02C 7/18 (2006.01); B64C 21/02 (2006.01); B64C 21/04 (2006.01); F02C 6/08 (2006.01); B64D 33/02 (2006.01); F15D 1/00 (2006.01); F02C 7/141 (2006.01); F02C 9/16 (2006.01); B64D 33/10 (2006.01); F01D 25/12 (2006.01); F15D 1/06 (2006.01); B64D 13/06 (2006.01);
U.S. Cl.
CPC ...
F02C 7/185 (2013.01); B64C 21/025 (2013.01); B64C 21/04 (2013.01); B64D 33/02 (2013.01); B64D 33/10 (2013.01); F01D 25/125 (2013.01); F02C 6/08 (2013.01); F02C 7/141 (2013.01); F02C 9/16 (2013.01); B64D 2013/0618 (2013.01); B64D 2033/0226 (2013.01); B64D 2033/0286 (2013.01); F05D 2210/30 (2013.01); F05D 2270/17 (2013.01); F15D 1/008 (2013.01); F15D 1/06 (2013.01); Y02T 50/56 (2013.01); Y02T 50/671 (2013.01); Y02T 50/675 (2013.01);
Abstract

Pre-cooler inlet ducts that utilize active flow-control and systems and methods including the same are disclosed herein. The systems include a pre-cooler inlet duct for a jet engine that is configured to receive a pre-cooler air stream and to direct the pre-cooler air stream into a heat exchanger. The pre-cooler inlet duct includes a flow-directing surface, which defines at least a portion of the pre-cooler inlet duct, and an active flow-control device. The active flow-control device is located to modify a boundary layer fluid flow within a boundary layer adjacent the flow-directing surface to resist separation of the boundary layer from the flow-directing surface when the pre-cooler air stream flows through the pre-cooler inlet duct. The methods include methods of resisting boundary layer separation in the pre-cooler inlet duct by flowing the pre-cooler air stream across the flow-directing surface and modifying the boundary layer with the active flow-control device.

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