Outer air seal for a gas turbine engine

Details Outer air seal for a gas turbine engine Outer air seal for a gas turbine engine

1993-02-25

1994-04-19

Bertsch, Richard A.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

415200, 277233, 277DIG6, 428457, 428698, F01D 1108

Patent

active

053040317

ABSTRACT:
An uncooled turbine outer air is comprised of a combination of monolithic ceramics with high temperature capability and oxidation and creep resistance, and a fiber reinforced ceramic composite with high fracture toughness. In a preferred embodiment of the invention, a fiber reinforced ceramic composite of silicon carbide and aluminum borosilicate is infiltrated by chemically vapor deposited silicon carbide. The infiltration process is continued until the composite develops a monolithic layer of silicon carbide. An additional layer is deposited on the monolithic ceramic to provide additional thermal protection.

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patent: 4801510 (1989-01-01), Mehrotra et al.
patent: 4824711 (1989-04-01), Cagliostro et al.
patent: 5211999 (1993-05-01), Okada

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