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US 9,803,491 B2Granted
Blade outer air seal having shiplap structure
AssigneeUnited Technologies Corporation
InventorsBrian Ellis Clouse, David F. Cloud, Donna Clough
Life of this patent
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Abstract
A blade outer air seal (BOAS) for a gas turbine engine, according to an exemplary aspect of the present disclosure includes, among other things a seal body having a radially inner face and a radially outer face that axially extend between a leading edge portion and a trailing edge portion and a shiplap structure that at least partially overlaps at least a portion of at least one of the leading edge portion and the trailing edge portion.
Claims18
A blade outer air seal (BOAS) for a gas turbine engine, comprising:
- a seal body having a radially inner face and a radially outer face that axially extend between a leading edge portion and a trailing edge portion;
- a retention flange that extends from said seal body at said leading edge portion, wherein said retention flange includes a radially outer portion and a radially inner portion, and said radially outer portion is received within a slot of a casing of the gas turbine engine and a vane segment rests against said radially inner portion;
- a shiplap structure that at least partially overlaps at least a portion of at least one of said leading edge portion and said trailing edge portion;
- and
- a seal land that extends from said seal body and radially supports said retention flange at two different radial locations of said retention flange.
2 more elements
A gas turbine engine, comprising:
- 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) associated with at least one of said compressor section and said turbine section, wherein said BOAS includes:
- a seal body having a radially inner face and a radially outer face that axially extend between a leading edge portion and a trailing edge portion;
- a retention flange that extends from said leading edge portion and including a radially outer portion received within a slot of a casing of the gas turbine engine and a radially inner portion received against a vane segment of the at least one of said compressor section and said turbine section, wherein a seal land of said seal body radially supports said retention flange at two different radial locations of said retention flange;
- a second retention flange that extends from said trailing edge portion;
- and
- a shiplap structure including a first shiplap portion in contact with said retention flange, a second shiplap portion in contact with said second retention flange, and a body portion in contact with said radially outer face of said seal body along an entire length from said first shiplap portion to said second shiplap portion.
6 more elements
A method of sealing portions of a blade outer air seal (BOAS) of a gas turbine engine, comprising:
- overlapping a seal body of the BOAS with a shiplap structure, the shiplap structure including at least a first shiplap portion in contact with a retention flange of a leading edge portion of the seal body, a body portion in contact with a radially outer face of the seal body across a length that extends from the leading edge portion to a trailing edge portion, and a second shiplap portion in contact with an engagement flange or hook of the trailing edge portion;
- wherein the retention flange includes a radially outer portion received within a slot of a casing of the gas turbine engine and a radially inner portion received against a vane segment;
- and
- wherein a seal land of the seal body radially supports the retention flange at two different radial locations of the retention flange.
1 more element
A gas turbine engine, comprising:
- a casing;
- a blade mounted for rotation relative to said casing;
- a vane mounted adjacent to said blade;
- a blade outer air seal (BOAS) positioned radially outward of a blade tip, said BOAS including:
- a seal body;
- a retention flange extending from said seal body and including a radially outer portion received within a slot of said casing and a radially inner portion received within a groove of a vane segment of said vane;
- a shiplap structure overlapping said retention flange and including a seal that extends into said slot of said casing;
- and
- said seal body includes a seal land in contact with both said radially outer portion and said radially inner portion of said retention flange.
6 more elements
Dependencies are inferred from the claim text.