GAS TURBINE ENGINE BEARING AND GEARBOX ARRANGEMENT
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Nov 26, 2024
filing date -
Nov 26, 2024
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Abstract
A gas turbine engine includes a plurality of blades that deliver air into a compressor section and a drive gear system including an epicyclic transmission. A drive shaft interconnects a gear carrier of the epicyclic transmission and the plurality of blades. A turbine section drives an input of the drive gear system through a turbine shaft. The drive gear system is straddle mounted by a first bearing forward of the drive gear system and a second bearing aft of the drive gear system. A ring gear of the epicyclic transmission is coupled to an engine case with a compliant flexure at a position between the first bearing and the second bearing.
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