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Title: Articles which include chevron film cooling holes, and related processes

An article is described, including an inner surface which can be exposed to a first fluid; an inlet; and an outer surface spaced from the inner surface, which can be exposed to a hotter second fluid. The article further includes at least one row or other pattern of passage holes. Each passage hole includes an inlet bore extending through the substrate from the inlet at the inner surface to a passage hole-exit proximate to the outer surface, with the inlet bore terminating in a chevron outlet adjacent the hole-exit. The chevron outlet includes a pair of wing troughs having a common surface region between them. The common surface region includes a valley which is adjacent the hole-exit; and a plateau adjacent the valley. The article can be an airfoil. Related methods for preparing the passage holes are also described.
Inventors:
;
Issue Date:
OSTI Identifier:
1165137
Assignee:
General Electric Company (Niskayuna, NY) NETL
Patent Number(s):
8,905,713
Application Number:
12/790,675
Contract Number:
FC26-05NT42643
Resource Relation:
Patent File Date: 2010 May 28
Research Org:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING

Other works cited in this record:

Coolant passages with full coverage film cooling slot
patent, May 1987

Method of fabricating film cooling slot in a hollow airfoil
patent, June 1987

Cooled turbomachinery components
patent, November 1991

Method for improving the cooling effectiveness of a gaseous coolant stream, and related articles of manufacture
patent, May 2001

Method for improving the cooling effectiveness of a gaseous coolant stream which flows through a substrate, and related articles of manufacture
patent, May 2002

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