Coolable outer air seal assembly for a gas turbine engine

Details Coolable outer air seal assembly for a gas turbine engine Coolable outer air seal assembly for a gas turbine engine

1993-02-05

1994-08-02

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Radially sliding

4151731, F01D 2526

Patent

active

053339924

ABSTRACT:
A coolable outer air seal assembly for a gas turbine engine is disclosed. Various construction details are developed which provide an outer air seal assembly comprised of a plurality of seal segments including bumpers adapted to maintain adequate cooling fluid flow through the clearance gap between adjacent seal segments. In one particular embodiment, each seal segment includes a mating surface having a plurality of bumpers disposed adjacent to cooling fluid channel outlets and an axially extending ridge disposed along the radially outer edge of the mating surface. The bumpers extend circumferentially a distance H.sub.b to maintain a minimum opening G.sub.min between adjacent seal segments and extend a radial distance W.sub.b to restrict fluid from flowing axially through the clearance gap. The ridge extends radially outward to define in part a seal edge for engaging a feather seal.

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patent: 4650395 (1987-03-01), Weidner
patent: 4759687 (1988-07-01), Miraucourt et al.
patent: 5088888 (1992-02-01), Bobo
patent: 5165847 (1992-11-01), Proctor et al.
patent: 5167485 (1992-12-01), Starkweather
patent: 5169287 (1992-12-01), Proctor et al.

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