Cmc component with cover plate
AssigneeRtx Corporation
InventorsWinston SMIDDY, Peter WILKINS, Alex J. SCHNEIDER, Paul M. LUTJEN
Life of this patent
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Abstract
The disclosure describes methods and devices for directing/controlling cooling air flow for cooling CMC components. A cover plate is positioned within a cooling cavity in the CMC component wherein the cover plate is angled to vary the depth of the cooling cavity between the cover plate and a bottom wall of the cavity. The angled cooling plate can be used to vary the flux of cooling air within the cooling cavity and thereby achieve a desired cooling performance within the cooling cavity.
Claims20
A ceramic matrix composite (CMC) component comprising:
- a base having side walls, a radial outer surface, and a radial inner surface, the base comprising a plurality of ceramic fiber plies and a ceramic matrix, the radial outer surface having a convex shape,
- at least one cooling cavity within the base that extends from the outer radial surface of the base into an interior region of the base, the at least one cooling cavity having a cavity opening at the outer radial surface of the base, and the at least one cooling cavity being defined by cavity side walls and a cavity bottom wall, and
- a cover plate positioned within the at least one cooling cavity to cover the cavity opening,
- wherein at least one side wall of the base is provided with a slot through which the cover plate is inserted.
A method of controlling cooling air flow within a CMC component, the method comprising:
- providing a CMC component comprising:
- a base having side walls, a radial outer surface, and a radial inner surface, the base comprising a plurality of ceramic fiber plies and a ceramic matrix, the radial outer surface having a convex shape, and
- at least one cooling cavity within the base that extends from the outer radial surface of the base into an interior region of the base, the at least one cooling cavity having a cavity opening at the outer radial surface of the base, and the at least one cooling cavity being defined by cavity side walls and a cavity bottom wall, and
- positioning a cover plate within the at least one cooling cavity to cover the cavity opening,
- wherein at least one side wall of the base is provided with a slot through which the cover plate is inserted.
A turbine engine comprising:
- a fan section, a compressor section, a combustion chamber, and a turbine section, the turbine section including at least one rotor and one or more turbine blade(s) extending radially outwardly from the at least one rotor;
- and
- a blade outer air seal assembly positioned between the one or more turbine blade(s) and an outer casing to the engine;
- wherein the blade outer air seal assembly is formed of a plurality blade outer air seal segments, wherein each blade outer air seal segment comprises:
- a base having side walls, a radial outer surface, and a radial inner surface, the base comprising a plurality of ceramic fiber plies and a ceramic matrix, the radial outer surface having a convex shape,
- at least one cooling cavity within the base that extends from the outer radial surface of the base into an interior region of the base, the at least one cooling cavity having a cavity opening at the outer radial surface of the base, and the at least one cooling cavity being defined by cavity side walls and a cavity bottom wall, and
- a cover plate positioned within the at least one cooling cavity to cover the cavity opening,
- wherein at least one side wall of the base is provided with a slot through which the cover plate is inserted.
Dependencies are inferred from the claim text.