Non-contact seal for a gas turbine engine

Details Non-contact seal for a gas turbine engine Non-contact seal for a gas turbine engine

2011-08-23

2011-08-23

Patel, Vishal (Department: 3674)

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

Reexamination Certificate

active

08002285

ABSTRACT:
A seal comprises the combination of a primary seal and a secondary seal each of which acts on at least one shoe that is installed with clearance relative to one of a rotor and a stator in a position to create a non-contact seal therewith. The at least one shoe is provided with a surface geometry that influences the inertia of fluid flowing across the seal, and, hence, the velocity of the fluid and the pressure distribution across the seal, ultimately affecting the balance of forces applied to the seal.

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