US 6,981,840 B2 | ||
Converging pin cooled airfoil | ||
Ching-Pang Lee, Cincinnati, Ohio (US); Ronald Scott Bunker, Niskayuna, N.Y. (US); and Chander Prakash, Cincinnati, Ohio (US) | ||
Assigned to General Electric Company, Schenectady, N.Y. (US) | ||
Filed on Oct. 24, 2003, as Appl. No. 10/692,700. | ||
Prior Publication US 2005/0169752 A1, Aug. 04, 2005 | ||
Int. Cl. F03D 11/00 (2006.01) |
U.S. Cl. 415—115 | 25 Claims |
1. A turbine airfoil comprising:
transversely spaced apart pressure and suction sidewalls joined together at chordally opposite leading and trailing edges
and extending in span from a root to a tip;
a septum spaced between said pressure and suction sidewalls to define with said sidewalls first and second cooling circuits
extending in span along opposite sides of said septum and converging between said leading and trailing edges;
said first circuit being disposed along said pressure sidewall, and said second circuit being disposed along said suction
sidewall and extending aft from said first circuit to said trailing edge; and
an array of pins extending inwardly from said pressure sidewall at a discharge end of one of said first and second circuits,
and said pins decrease in length to conform with said one circuit converging between said leading and trailing edges.
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