Turbofan engine noise suppression using fan flow deflector

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United States of America Patent

PATENT NO 8997454
APP PUB NO 20100254803A1
SERIAL NO

11652230

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Abstract

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An embodiment of the invention is a technique to suppress noise in a jet engine. A substantially annular fan nozzle of a separate-flow turbofan engine includes a flow boundary surface and an outlet to discharge fan air into atmosphere. At least one vane extends substantially radially from the flow boundary surface to vector at least a portion of the fan air toward a direction where noise suppression is desired. The-vane is situated in proximity of the outlet and has a span substantially greater than a thickness of a local boundary layer of the fan air.

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Patent Owner(s)

Patent OwnerAddress
REGENTS OF THE UNIVERSITY OF CALIFORNIA THE1111 FRANKLIN STREET 12TH FLOOR A CALIFORNIA CORPORATION OAKLAND CA USA 94607-5200

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Papamoschou, Dimitri Mission Viejo, US 9 77

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