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.:
Date of Patent:
Jan. 07, 2014
Filed:
May. 19, 2011
Mark Drela, Cambridge, MA (US);
John Gundlach, Fairfax, VA (US);
Robert Parks, San Jose, CA (US);
Adam Scott Ehrmantraut, Manassas Park, VA (US);
Mark Drela, Cambridge, MA (US);
John Gundlach, Fairfax, VA (US);
Robert Parks, San Jose, CA (US);
Adam Scott Ehrmantraut, Manassas Park, VA (US);
Aurora Flight Sciences Corporation, Manassas, VA (US);
Abstract
A system and method for reducing the noise penalty of a pusher propeller, allowing an aircraft to retain its advantages for UAV configurations, while allowing acoustic performance similar to that of a tractor propeller by reducing, or eliminating, propeller noise emissions. The system and method provide an airfoil-shaped flight surface with (i) a scoop configured to route boundary layer air and associated wake from said flight surface, and (ii) a suction device configured to provide a suction pressure, wherein the scoop routes boundary layer air from the flight surface to the suction device via an opening in the flight surface.