Flexible coupling for geared turbine engine
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Feb 18, 2014
filing date -
Mar 12, 2013
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Abstract
A gas turbine engine includes a fan shaft arranged along an engine central axis, a frame supporting the fan shaft, a gear system rotatably coupled with the fan shaft, and a flexible coupling at least partially supporting the gear system. The flexible coupling defines, with respect to the engine central axis, a torsional stiffness TS and a lateral stiffness LS such that a ratio of TS/LS is greater than or equal to about 2.0 to reduce loads on the gear system from misalignment of the gear system with respect to the engine central axis.
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