Electric enhanced transmission for multi-spool load-sharing turbofan engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11168617
APP PUB NO 20200240331A1
SERIAL NO

16261688

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A turbofan engine includes a first spool including a first turbine, and a first tower shaft engaged to the first spool. A second spool includes a second turbine, and a second tower shaft is engaged to the second spool. A superposition gearbox includes a sun gear, a plurality of intermediate gears engaged to the sun gear, and is supported in a carrier and a ring gear circumscribing the intermediate gears. The first tower shaft or the second tower shaft drives one of the intermediate gears. A drive motor is engaged to drive the sun gear, an inner electric motor, a stator disposed radially outside of the inner electric motor, and an outer electric motor disposed radially outside the stator. A first load on the first spool and a second load on the second spool is adjusted by operation of at least one of the inner electric motor and the outer electric motor.

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Patent Owner(s)

  • RAYTHEON TECHNOLOGIES CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kupratis, Daniel Bernard Wallingford, US 195 1497
Wood, Coy Bruce Ellington, US 43 333

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