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:
May. 30, 2017
Filed:
May. 11, 2012
Applicant:
Jang Ho Lee, Gunsan-si, KR;
Inventor:
Jang Ho Lee, Gunsan-si, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 1/06 (2006.01);
U.S. Cl.
CPC ...
F03D 1/0633 (2013.01);
Abstract
A tip airfoil of a wind turbine blade has a suction surface and a pressure surface formed at the upper side and the lower side of a chord line which connects the leading edge and the trailing edge. The operating Reynolds number is 30,000 to 1,000,000, and the angle of attack of the airfoil is 0 to 21 degrees. The maximum lift coefficient is 1.2 to 1.5, and the minimum drag coefficient is 0.01 to 0.06.