Fluid reaction surfaces (i.e. – impellers) – With measuring – testing – signalling or inspection means
Reexamination Certificate
2007-05-29
2007-05-29
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With measuring, testing, signalling or inspection means
C416S09700R, C029S557000, C029S889721
Reexamination Certificate
active
10766231
ABSTRACT:
An airfoil for a gas turbine engine blade includes a plurality of film cooling holes extending through its outer surface. The film cooling holes are formed by defining at least a first datum structure and a second datum structure, and then forming each film cooling hole at a location on the airfoil outer surface relative to the first and second datum structures. As a result, each film cooling hole has a centerline extending therethrough that forms a compound angle with respect to a tangent to the outer surface, and the distance between the centerlines of each film cooling hole is at least a predetermined minimum distance.
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PCT International Search Report for PCT/US2005/003125, dated Jun. 2, 2005.
Borns Frederick G.
McDonald Robert
Riahi Ardeshir
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Verdier Christopher
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