General Electric Company

General Electric Company Polska Sp. Z O.o.

Abdus Shamim

Craig Alan Gonyou

Mohamed Ahmed Ali

Mehdi Milani Baladi

Joseph Anthony Cotroneo

Robert John Parks

Kenneth Arthur Gould

Adam Krysztopa

Krzysztof Chelstowski

John Edward Altman

Steve Shirooni

Mark Brands

Jaroslaw Henryk Dekowski

Piotr Sebastian Hance

Przemyslaw Slawomir Tkaczyk

Marcin Pawel Faber

Piotr Lech Bar

A gas turbine engine having an improved air delivery system that includes features for pressurizing and/or cooling various components of the engine while minimizing the impact to the cycle efficiency of the engine, reducing the weight of the engine, and reducing the specific fuel consumption of the engine is provided.

Air delivery system for a gas turbine engine

A system includes a turbine with an expansion section configured to expand an exhaust flow in a downstream direction, such that the expansion section includes a plurality of stages and a diffuser section coupled downstream of the expansion section. The diffuser section receives the exhaust flow along an exhaust path and an energizing flow along a wall, and the diffuser section includes the wall comprising an inner surface, so the wall is disposed about the exhaust path, and an energizing port disposed in the wall at or downstream of a last stage of the plurality of stages of the expansion section. The energizing port is configured to direct the energizing flow along the inner surface of the wall to energize a boundary layer along the wall, and a first pressure of the energizing flow is greater than a second pressure of the exhaust flow at the energizing port.

System and method for improving exhaust energy recovery

A method is provided of reducing lockout time of a gas turbine engine which includes: an inlet, a compressor, a combustor, a turbine, and an exhaust duct, where the compressor and the turbine are carried on a turbomachinery rotor and each include an array of blades mounted for rotation inside a casing of the engine. The method includes: operating the engine at a first power output; shutting down operation of the engine without substantially reducing the power output beforehand, wherein thermomechanical changes occur in the engine subsequent to shutdown that tend to reduce a radial clearance between at least one of the blades and the casing; and subsequent to shutting down the engine, (1) heating the casing and/or (2) pumping an airflow of ambient air into the inlet and through the casing, past the rotor, and out the exhaust duct, so as to reverse at least partially the thermomechanical changes.

Gas turbine engine lockout reduction

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West Chester, OH, United States of America

Abdus Shamim