The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2019
Filed:
Jan. 28, 2015
General Electric Company, Schenectady, NY (US);
Steven Alan Ross, Cincinnati, OH (US);
Mark Edward Linz, Cincinnati, OH (US);
Joseph Daniel Garrett, III, Parkersburg, WV (US);
Amid Ansari, Mason, OH (US);
Joseph Roger Broda, West Chester, OH (US);
Thomas Earl Gillingham, Cincinnati, OH (US);
Kevin Richard Graziano, Cincinnati, OH (US);
Robert Charles Hon, Fort Mitchell, KY (US);
Kenneth Kirchmayer, Cincinnati, OH (US);
Daniel Roy Kiracofe, Cincinnati, OH (US);
Andrew Todd Lehmann, Hamilton, OH (US);
Michael Scott McCambridge, Cincinnati, OH (US);
Tod Robert Steen, West Chester, OH (US);
Thomas Charles Swager, Mainville, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
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.