TURBOMACHINE STATOR TRAVELLING WAVE INHIBITOR

TURBOMACHINE STATOR TRAVELLING WAVE INHIBITOR

A turbomachine assembly includes annular stator surrounding rotor circumscribed and rotatable about centerline axis. One or more non-axisymmetric partial arc annular circular stiffeners are disposed around and on stator and may be helical. Non-axisymmetric partial arc annular circular stiffeners may...

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Hauptverfasser: STEEN, Tod, Robert, LANGENBRUNNER, Leslie
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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creator STEEN, Tod, Robert
LANGENBRUNNER, Leslie
description A turbomachine assembly includes annular stator surrounding rotor circumscribed and rotatable about centerline axis. One or more non-axisymmetric partial arc annular circular stiffeners are disposed around and on stator and may be helical. Non-axisymmetric partial arc annular circular stiffeners may extend about one third to one half of a circumference, be hollow, and located over one or more blade stages of rotor. One or more annular mid-span flanges may be attached to stator and axially positioned within the hollow partial arc annular circular stiffeners. One or more masses or externals may be attached to the stator or to at least one of the one or more annular mid-span flanges between ends of partial arc annular circular stiffeners. Annular stator and rotor may have matching frequencies causing rotating stator waves rotating with rotor. The stator may be fan casing surrounding fan rotor or labyrinth seal land surrounding labyrinth seal teeth.
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One or more non-axisymmetric partial arc annular circular stiffeners are disposed around and on stator and may be helical. Non-axisymmetric partial arc annular circular stiffeners may extend about one third to one half of a circumference, be hollow, and located over one or more blade stages of rotor. One or more annular mid-span flanges may be attached to stator and axially positioned within the hollow partial arc annular circular stiffeners. One or more masses or externals may be attached to the stator or to at least one of the one or more annular mid-span flanges between ends of partial arc annular circular stiffeners. Annular stator and rotor may have matching frequencies causing rotating stator waves rotating with rotor. 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subjects BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
title TURBOMACHINE STATOR TRAVELLING WAVE INHIBITOR
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