Rotary kinetic fluid motors or pumps – Including heat insulation or exchange means – Working fluid on at least one side of heat exchange wall
Patent
1997-11-07
1999-08-24
Denion, Thomas E.
Rotary kinetic fluid motors or pumps
Including heat insulation or exchange means
Working fluid on at least one side of heat exchange wall
415177, 415115, 416 95, 416241R, F01D 508
Patent
active
059416866
ABSTRACT:
A fluid cooled article having a protective coating on a surface, for example an air cooled gas turbine engine article having a Thermal Barrier Coating, includes through an article wall a fluid cooling passage, and typically a plurality of passages, having openings sized to maintain desired fluid flow, unobstructed by coating within the passage at an exit opening. The passage has a first or inlet opening, which establishes the amount of fluid flow through the passage, and a second opening through which the flow exits the passage through a wall surface on which the coating is deposited. A method for making the article to have such unobstructed flow includes selecting a cross sectional area for the first opening, selecting a coating method for deposit of the coating, in a selected thickness range, on the wall surface and partially within the passage at the second opening, and generating the passage to have a second opening with a cross sectional area greater than that of the first opening by an amount which is no less than a reduction in cross sectional area resulting from partial deposit of the coating through the second opening.
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Gupta Bhupendra K.
Scheidt Wilbur D.
Ziegler Robert P.
Denion Thomas E.
General Electric Company
Herkamp Nathan D.
Hess Andrew C.
Woo Richard
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