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:
Jan. 20, 2009
Filed:
Nov. 23, 2004
Frank J. Cunha, Avon, CT (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
David M. Kontrovitz, Manchester, CT (US);
Jeffrey R. Levine, Wallingford, CT (US);
Young Chon, Manchester, CT (US);
Dominic Mongillo, West Hartford, CT (US);
Bret Teller, Meriden, CT (US);
Frank J. Cunha, Avon, CT (US);
Edward F. Pietraszkiewicz, Southington, CT (US);
David M. Kontrovitz, Manchester, CT (US);
Jeffrey R. Levine, Wallingford, CT (US);
Young Chon, Manchester, CT (US);
Dominic Mongillo, West Hartford, CT (US);
Bret Teller, Meriden, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An airfoil, and in a disclosed embodiment a rotor blade, has film cooling holes formed at a leading edge. A supplemental film cooling channel is positioned near the leading edge, but spaced toward the trailing edge from the leading edge. The supplemental film cooling channel directs film cooling air onto a suction wall. The supplemental film cooling channel air is generally directed to a location on the suction wall that has raised some challenges in the past. In a disclosed embodiment, the airfoil is provided with a thermal barrier coating, and the supplemental film cooling air protects this thermal barrier coating.