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:
Oct. 25, 2016
Filed:
Apr. 14, 2014
Siemens Aktiengesellschaft, München, DE;
John M. Obrecht, Louisville, CO (US);
Arni T. Steingrimsson, Erie, CO (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A wind turbine blade () having a spanwise series of vortex generators (P,P,) and having a trailing edge () defining a waveform. The vortex generators are aligned with a predetermined position or phase () of a respective period of the trailing edge waveform. Each vortex generator may be designed to create a vortex () that crosses the trailing edge at an angle of less than 30 degrees from parallel to the trailing edge. The blade may include alternating ridges () and troughs () that end at the waveform trailing edge. A front end of each trough may form a V-shaped drop-off in the suction side of the blade that forms a pair () of vortex generators to create counter-rotating vortices within the trough that entrain energy to the bottom of the trough.