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:
Dec. 13, 2011
Filed:
Feb. 13, 2009
Thomas J. Praisner, Colchester, CT (US);
Eunice Allen-bradley, East Hartford, CT (US);
Shankar S. Magge, South Windsor, CT (US);
Keshava B. Kumar, South Windsor, CT (US);
Thomas J. Praisner, Colchester, CT (US);
Eunice Allen-Bradley, East Hartford, CT (US);
Shankar S. Magge, South Windsor, CT (US);
Keshava B. Kumar, South Windsor, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An airfoil with turning flow comprises a first surface, a second surface, a leading edge and a trailing edge. The first and second surfaces extend from the leading edge to a trailing edge. A chord extends from a midpoint of the leading edge to a midpoint of the trailing edge, defining a duct angle of at least fifteen degrees with respect to a turbine axis. An axial length of the chord defines an aspect ratio of at most one with respect to an average radial span of the leading and trailing edges. In a region of the trailing edge, an axial angle is at most four degrees and a circumferential angle is at most ten degrees, where the circumferential angle is defined in a direction opposite the turning flow.