Rolls-Royce Corporation

Philip Burkholder

Kenneth M Pesyna

Donald J Frasier

Rigoberto Jorge Rodriguez

Steven Gagne

Mark Winely

Kevin Chin

An electrical machine is embedded into the compressor assembly of a gas turbine engine. An electrical system interface module distributes electrical current to and from the embedded electrical machine for starting the gas turbine engine and for operating accessory components. Accordingly, the gas turbine engine and accessory components can be started and operated without a power-takeoff shaftline and without an external accessory gearbox.

Gas turbine engine with integrated electric starter/generator

The present invention contemplates a multi-airfoil vane segment produced as a single crystal casting from a rhenium containing directionally solidified alloy. The single crystal casting containing grain boundary strengtheners.

Single crystal vane segment and method of manufacture

An apparatus for use in the bearing compartment of a gas turbine engine includes a first conduit and a second conduit. The first conduit defines inner and outer surfaces between an inlet end and an outlet end. The second conduit defines inner and outer surfaces between an inlet end and an outlet end. At least a portion of the second conduit is substantially coaxial with and enclosed by at least a portion of the first conduit. One of the first conduit or the second conduit is a lubricant feed to the bearing compartment. The other of the first conduit and the second conduit is the air vent from the bearing compartment.

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Pittsboro, IN, United States of America

Philip Burkholder