Single-cast, high-temperature, thin wall structures having a high thermal conductivity member connecting the walls and methods of making the same
AssigneeAllison Engine Company, Inc.
InventorDonald J. Frasier
Life of this patent
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Abstract
Disclosed is an integral single-cast multi wall structure including a very thin wall and a second thin wall. There is a passageway interposed between the pair of walls of the structure, and a high thermal conductivity member extends into said passageways and thermally couples the walls. The high thermal conductivity member increases the heat transfer between the walls of the structure. The present invention further includes a method for casting an integral structure having very thin walls that utilizes the high thermally conductive member in the casting process to hold the pattern and cores in alignment.
Claims37
A gas turbine airfoil, comprising:
- an integral single cast multi-wall alloy structure including a first very thin wall having a thickness less than about 0.040 inches, and a second wall;
- a passageway interposed between said first and second walls;
- and
- a high thermal conductivity member of a different material than said structure connecting from at least one of said first and second walls and extending into said passageway.
An airfoil comprising:
- a single cast multi-wall alloy structure having a first very thin wall and a second wall;
- a passageway interposed between said first and second walls;
- and
- a high thermal conductivity member of a different material than said structure connecting from at least one of said first and second walls and extending into said passageway.
A gas turbine airfoil, comprising:
- an integral single cast multi-wall alloy structure having a first very thin wall and a second wall, said first very thin wall having a thickness less than about 0.040 inches;
- a passageway interposed between said first and second walls, said passageway having a width ranging from about 0.005 to about 0.015 inches;
- and
- a high thermal conductivity member having a thermal conductivity higher than the thermal conductivity of said structure, said high thermal conductivity member metallurgically bonded to at least one of said first and second walls and extending into said passageway.
Dependencies are inferred from the claim text.