General Electric Company

Joseph Daniel Garrett, Iii

Robert Charles Hon

Tod Robert Steen

Steven Alan Ross

Kevin Richard Graziano

Michael Scott McCambridge

Mark Edward Linz

Amid Ansari

Thomas Charles Swager

Thomas Earl Gillingham

Andrew Todd Lehmann

Daniel Roy Kiracofe

Kenneth Kirchmayer

Joseph Roger Broda

A gas turbine engine and method of starting, the gas turbine engine having a rotor comprising at least a shaft mounted compressor and turbine, with a casing surrounding the rotor. The method comprises an acceleration phase, a bowed-rotor cooling phase, during the acceleration, and a combustion phase. The bowed-rotor cooling phase comprises a time where the rotational speed of the rotor is maintained below a bowed-rotor threshold speed until a non-bowed condition is satisfied, wherein the air forced through the gas turbine engine cools the rotor. The combustion phase occurs after the bowed-rotor cooling phase and upon reaching the combustion speed, wherein fuel is supplied to the gas turbine engine is turned on.

Method of starting a gas turbine engine including a bowed-rotor cooling phase

A method of starting a gas turbine engine having a rotor comprising at least a shaft-mounted compressor and turbine, with a casing surrounding the rotor includes an acceleration phase, a bowed-rotor cooling phase, during the acceleration, and a combustion phase. The bowed-rotor cooling phase comprises a time where the rotational speed of the rotor is maintained below a bowed-rotor threshold speed until a non-bowed condition is satisfied, wherein the air forced through the gas turbine engine cools the rotor. The combustion phase occurs after the bowed-rotor cooling phase and upon reaching the combustion speed, wherein fuel is supplied to the gas turbine engine.

Method of starting a gas turbine engine including a cooling phase

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Cincinnati, OH, United States of America

Joseph Daniel Garrett, Iii