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:
Jul. 15, 2014
Filed:
Nov. 02, 2011
Applicant:
Drew Eisenberg, Boulder, CO (US);
Inventor:
Drew Eisenberg, Boulder, CO (US);
Assignee:
Siemens Aktiengesellschaft, München, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An airfoil () is mounted on a chordwise stall fence () of a wind turbine blade (). The airfoil may be an aerodynamic slat () positioned over a forward portion of the suction side () of the blade or a flap () disposed near a trailing edge () of the blade. The stall fence may be at least as high as the thickness of the boundary layer () of air passing over the blade. The slat or flap may be twisted between an inboard end (A) and an outboard end (B) to compensate for the radially varying angle of the relative air inflow (A,B).