Turbofan engine noise suppression using fan flow deflector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 2015
Grant Date -
Oct 7, 2010
app pub date -
Jan 10, 2007
filing date -
Mar 20, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
First Claim
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International Classification(s)
- 2007 Application Filing Year
- F02K Class
- 187 Applications Filed
- 147 Patents Issued To-Date
- 78.61 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F02K Class
- 10 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 7, 2026 |
