Fluid reaction surfaces (i.e. – impellers) – With fluid passage in working member communicating with... – Air and watercraft propellers
Reexamination Certificate
2006-11-21
2006-11-21
Edgar, Richard A. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With fluid passage in working member communicating with...
Air and watercraft propellers
C416S09700R
Reexamination Certificate
active
07137780
ABSTRACT:
A turbine blade for a turbine engine having a cooling system with at least one serpentine cooling channel in internal aspects of the turbine blade. The serpentine cooling channel includes at least one root turn proximate to a root of the turbine blade. The root turn may have a generally rectangular shape and may account for reduced pressure losses relative to conventional curved root turns. One or more refresh holes may be positioned in a rib proximate to the root turn to provide the root turn with cooling fluids that have bypassed the first and second legs of the serpentine cooling channel.
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Edgar Richard A.
Siemens Power Generation, Inc.
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