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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Laminar flow surfaces with selected roughness distributions, and associated methods

Invented by: Jeffrey D. Crouch
Issaquah, WA

Lian L. Ng
Bellevue, WA

Mary I. Sutanto
Redmond, WA

Originally Assigned to: The Boeing Company
Chicago, IL
[Now assigned to . . .]

Issued:2010-12-14
Filed:2007-04-25
Application No:11740040
Examined by:Collins; Timothy D

Laminar flow surfaces with selected roughness distributions, and associated methods are disclosed. A representative method for designing an airfoil includes selecting a parameter that includes a flow behavior distribution and/or a surface shape for an airflow surface. Based at least in part on the selected parameter, the method can include (a) selecting a target roughness value and determining a chordwise location forward of which surface roughness is at or below the target roughness value and/or (b) selecting a target chordwise location and determining a roughness value for a region forward of the chordwise location, with the surface roughness at or below the roughness value. In particular embodiments, a percentage of a local chord length of the airfoil over which the roughness is below a target value decreases in a spanwise direction. In another embodiment, the roughness at a particular spanwise location can increase over at least three values, continuously, in a step manner, or otherwise.

[pdf] U.S. Pat. No. 7,850,126

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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