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. 13, 2008
Filed:
May. 27, 2005
James P. Downs, Jupiter, FL (US);
Norman F. Roeloffs, Tequesta, FL (US);
Edward Pietraszkiewicz, Southington, CT (US);
David Michael Kontrovitz, Manchester, CT (US);
Takao Fukuda, East Hartford, CT (US);
James P. Downs, Jupiter, FL (US);
Norman F. Roeloffs, Tequesta, FL (US);
Edward Pietraszkiewicz, Southington, CT (US);
David Michael Kontrovitz, Manchester, CT (US);
Takao Fukuda, East Hartford, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A turbine blade system for a gas turbine engine includes a turbine blade having a trailing edge region extending in a lateral direction and in a lengthwise direction from a pressure side surface to a trailing edge. The trailing edge region includes a plurality of riblets extending in the lengthwise direction from the pressure side surface toward the trailing edge. The trailing edge region defines a plurality of ejection slots each laterally disposed between two of the riblets. The plurality of riblets each define an upper surface having at least a portion in the lengthwise direction being curved relative to the pressure side surface so as to generally shield the upper surface from a high heat load propagating from the pressure side surface and to facilitate cooling air flowing from the ejection slots to flow over the upper surface.