Noise reducing stator assembly for a gas turbine engine

Details Noise reducing stator assembly for a gas turbine engine Noise reducing stator assembly for a gas turbine engine

1996-12-23

1999-04-20

Casaregola, Louis J.

Power plants

Reaction motor

Interrelated reaction motors

181222, 415119, F02C 7045

Patent

active

058947213

ABSTRACT:
A stator assembly for reducing noise in the outermost portion of the working medium flow path is disclosed. Various construction details are developed which relate to the reduction in noise within the outer twenty percent (20%) of the working medium flow path. In one particular embodiment, an annular channel extends rearwardly from a location between the blades and the vanes for capturing a significant portion of the wake turbulent flow from the tip region of the rotor blades. The annular channel is bounded by a pair of circumferentially extending walls, at least one of which has acoustic treatment to absorb tonal and broadband noise.

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