초록 ▼

An apparatus for controlling vibrations in a rotor stage rotating through core gas flow is provided. The apparatus includes a source of high-pressure gas and a plurality of ports for dispensing high-pressure gas. The rotor stage rotates through core gas flow having a plurality of circumferentially d

An apparatus for controlling vibrations in a rotor stage rotating through core gas flow is provided. The apparatus includes a source of high-pressure gas and a plurality of ports for dispensing high-pressure gas. The rotor stage rotates through core gas flow having a plurality of circumferentially distributed first and second regions. Core gas flow within each first and second region travels at a first and a second velocity, respectively. The first velocity is substantially higher than the second velocity. The ports dispensing the high-pressure gas are selectively positioned upstream of the rotor blades, and aligned with the second regions such that high-pressure gas exiting the ports enters the second regions. The velocity of core gas flow in the second regions consequently increases, and substantially decreases the difference in core gas flow velocity between the first and second regions.

대표청구항 ▼

[ We claim:] [12.] A gas turbine engine, comprising:a fan;a compressor;a combustor;a turbine;wherein said fan, compressor, combustor, and turbine are axially aligned and core gas flow entering said fan passes through said compressor, combustor, and said turbine; andwherein at least one of said fan,

[ We claim:] [12.] A gas turbine engine, comprising:a fan;a compressor;a combustor;a turbine;wherein said fan, compressor, combustor, and turbine are axially aligned and core gas flow entering said fan passes through said compressor, combustor, and said turbine; andwherein at least one of said fan, compressor, or said turbine includes:a stator vane stage, including an inner radial platform and an outer radial platform, and a plurality of stator vanes circumferentially distributed therebetween,a rotor stage, positioned downstream of, and adjacent, said stator vane stage, said rotor stage including a plurality of rotor blades extending radially outward from said disk; anda liner, radially outside of said rotor stage;means for controlling vibrations in said rotor stage, said means including a plurality of ports disposed in said liner between said stator vane stage and said rotor stage, said ports aligned with said stator vanes;wherein said ports are connected to a high-pressure gas source, selectively providing gas at a pressure substantially higher than the pressure of the core gas flow passing through the rotor stage; andwherein said high-pressure gas exits said ports and acts on said rotor stage.