Blade outer air seal for a gas turbine engine
First Claim
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1. A blade outer air seal (BOAS) segment, comprising:
- a seal body having a radially inner face and a radially outer face that circumferentially extend between a first mate face and a second mate face and axially extend between a leading edge face and a trailing edge face; and
at least one of said first mate face and said second mate face including an inner wall having a ledge that protrudes from said inner wall and an undercut passage radially inward from said ledge and that extends uninterrupted along a length of said ledge, said ledge further extending along an inner wall of at least one of said leading edge face and said trailing edge face.
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Abstract
A blade outer air seal (BOAS) segment according to an exemplary embodiment of the present disclosure can include a seal body having a radially inner face and a radially outer face that circumferentially extend between a first mate face and a second mate face and axially extend between a leading edge face and a trailing edge face. At least one of the first mate face, the second mate face, the radially outer face and the radially inner face can include an inner wall having a ledge and an undercut passage radially inward from the ledge that extends uninterrupted along a length of the ledge.
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Citations
22 Claims
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1. A blade outer air seal (BOAS) segment, comprising:
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a seal body having a radially inner face and a radially outer face that circumferentially extend between a first mate face and a second mate face and axially extend between a leading edge face and a trailing edge face; and at least one of said first mate face and said second mate face including an inner wall having a ledge that protrudes from said inner wall and an undercut passage radially inward from said ledge and that extends uninterrupted along a length of said ledge, said ledge further extending along an inner wall of at least one of said leading edge face and said trailing edge face. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A blade outer air seal (BOAS) assembly, comprising:
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a BOAS segment having a radially inner face and a radially outer face that circumferentially extend between a first mate face and a second mate face and axially extend between a leading edge face and a trailing edge face; a cover plate received at said radially outer face such that a core cavity extends between said radially outer face and said cover plate; wherein at least one of said first mate face and said second mate face include a ledge that protrudes from an inner wall to support said cover plate and an undercut passage radially inward from said ledge, wherein said core cavity extends to an edge portion of said undercut passage that is circumferentially offset from said inner wall in a direction away from said core cavity; a cooling hole formed through said ledge and opening into said undercut passage; and a hole extending between said edge portion and an exterior wall of said at least one of said first mate face and said second mate face that includes said ledge, wherein a secondary cooling airflow path extends through said cooling hole, into said undercut passage, and then through said hole. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A gas turbine engine, comprising:
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a compressor section; a combustor section in fluid communication with said compressor section; a turbine section in fluid communication with said combustor section; a blade outer air seal (BOAS) assembly associated with at least one of said compressor section and said turbine section, wherein said BOAS assembly includes a plurality of BOAS segments having; a seal body having a radially inner face and a radially outer face that circumferentially extend between a first mate face and a second mate face and axially extend between a leading edge face and a trailing edge face; and wherein at least one of said first mate face and said second mate face include an inner wall having a ledge that protrudes from said inner wall and an undercut passage radially inward from said ledge, said ledge further extending along an inner wall of at least one of said leading edge face and said trailing edge face, wherein a core cavity extends to an edge portion of said undercut passage that is circumferentially offset from said inner wall in a direction away from said core cavity. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification