Blade outer air seal with cooling features
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. At least one cooling fin is disposed on the radially outer face between the leading edge portion and the trailing edge portion.
1. 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; and
at least one cooling fin disposed on said radially outer face between said leading edge portion and said trailing edge portion, said at least one cooling fin including an outer surface having a stepped portion that defines a varying height, wherein said stepped portion includes a first height adjacent to said leading edge portion and a second height that is different from said first height adjacent to said trailing edge portion.
2. The gas turbine engine as recited in claim 1 , wherein said BOAS is positioned radially outward from a blade tip of a blade of at least one of said compressor section and said turbine section.
3. The gas turbine engine as recited in claim 1 , comprising a plurality of cooling fins that axially extend across said radially outer face between said leading edge portion and said trailing edge portion.
4. The gas turbine engine as recited in claim 1 , wherein said at least one cooling fin axially extends between said leading edge portion and said trailing edge portion.
5. The gas turbine engine as recited in claim 1 , comprising a plurality of cooling fins disposed on said radially outer surface, wherein a first portion of said plurality of cooling fins include a first length and a second portion of said plurality of cooling fins include a second length that is different from said first length.
6. The gas turbine engine as recited in claim 1 , wherein said at least one cooling fin extends outboard of a radially outermost surface of at least one of said leading edge portion and said trailing edge portion.
7. The gas turbine engine as recited in claim 1 , wherein said at least one cooling fin extends at a perpendicular angle relative to said radially outer face and a second cooling fin extends at a non-perpendicular angle relative to said radially outer face.
8. The gas turbine engine as recited in claim 1 , comprising a second cooling fin that includes an outer surface having a uniform height.
9. The gas turbine engine as recited in claim 1 , wherein said stepped portion occurs along a length of said outer surface at a location that is spaced from opposing ends of said at least one cooling fin.
10. A blade outer air seal (BOAS) for a gas turbine engine, comprising:
a non-segmented, full hoop 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;
at least one cooling fin disposed on said radially outer face between said leading edge portion and said trailing edge portion, said at least one cooling fin extending outboard of a radially outermost surface of at least one of said leading edge portion and said trailing edge portion, and said at least one cooling fin including an outer surface that defines a varying height; and
a hook that extends in a radially inward direction from said leading edge portion of said seal body.