Methods and apparatus for operating gas turbine engines

Details Methods and apparatus for operating gas turbine engines Methods and apparatus for operating gas turbine engines

2005-01-10

2009-06-23

Casaregola, Louis J (Department: 3741)

Power plants

Combustion products used as motive fluid

Process

C060S224000, C060S226100

Reexamination Certificate

active

07549291

ABSTRACT:
A gas turbine engine assembly includes at least one propelling gas turbine engine and an auxiliary engine used for generating power. The propelling gas turbine engine includes a fan assembly and a core engine downstream from said fan assembly. The core engine includes a compressor, a high pressure turbine, a low pressure turbine, and a booster turbine coupled together in serial-flow arrangement such that the booster turbine is rotatably coupled between the high and low pressure turbines. The auxiliary engine includes at least one turbine and an inlet. The inlet is upstream from the high pressure turbine and is in flow communication with the propelling gas turbine engine core engine, such that a portion of airflow entering the propelling engine is extracted for use by the auxiliary engine.

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