Planetary gear system arrangement with auxiliary oil system

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United States of America Patent

PATENT NO 9995174
SERIAL NO

13428491

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Abstract

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A gas turbine engine has a fan, first and second compressor stages, first and second turbine stages. The first turbine stage drives the second compressor stage as a high spool. The second turbine stage drives the first compressor stage as part of a low spool. A gear train drives the fan with the low spool, such that the fan and first compressor stage rotate in the same direction. The high spool operates at higher pressures than the low spool. A lubrication system is also disclosed.

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Patent Owner(s)

  • UNITED TECHNOLOGIES CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McCune, Michael E Colchester, US 261 5877
Portlock, Lawrence E Bethany, US 55 1009
Sheridan, William G Southington, US 273 5564

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