Blade outer air seal cooling enhanced with inter-segment film sl

Details Blade outer air seal cooling enhanced with inter-segment film sl Blade outer air seal cooling enhanced with inter-segment film sl

1993-12-13

1994-12-20

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Circumferentially spaced nozzle or stator segments

415115, 415116, 4151731, 4151733, 415180, 277199, F01D 904

Patent

active

053741617

ABSTRACT:
A cooling enhancement for a gas turbine engine blade outer air seal is made up of a plurality of arcuate seal segments, and each one has one or more internal cooling passages. Each segment has a supply surface opposite and in spaced relation to a sealing surface, and first and second end surfaces extending from the sealing surface to the supply surface. Each of the end surfaces includes a substantially planar perpendicular surface and a substantially planar canted surface intersecting at an included angle of between 100 degrees and 140 degrees, and the supply surface has a plurality of cooling orifices adjacent the second end surface. At least one cooling passage extends from the first end surface towards the second end surface, and each cooling passage intersects the first end surface and terminates short of the second end surface. Each cooling passage communicates with the supply surface through at least one of the cooling orifices. Protruding from at least one of the substantially canted surfaces is a plurality of stand-off pedestals that are integral with the canted surface.

REFERENCES:
patent: 3801220 (1974-04-01), Beckershoff
patent: 4497610 (1985-02-01), Richardson et al.
patent: 4642024 (1987-02-01), Weidner
patent: 5167485 (1992-12-01), Starkweather

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