Turbine engine rotor assembly blade outer air seal

Details Turbine engine rotor assembly blade outer air seal Turbine engine rotor assembly blade outer air seal

1996-12-18

1998-08-11

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

Between blade edge and static part

F04D 2918

Patent

active

057918716

ABSTRACT:
A blade outer air seal for a turbine engine rotor assembly is provided. The rotor assembly includes a plurality of rotor blades extending out from a rotor disk, each blade having an outer radial tip with an axial length. The blade outer air seal includes a hoop-shaped body and apparatus for suspending the body in close proximity to the outer radial tips of the rotor blades. The body includes an inner radial surface and an outer radial surface. According to a first embodiment, the body inner radial surface includes a first slot, a second slot, and a central portion positioned between the first and second slots. The central portion has an axial length equal to or less than the axial length of the rotor blade outer radial tips. According to a second embodiment, the body inner radial surface includes a raised central portion having an axial length equal to or less than the axial length of the rotor blade outer radial tips.

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