GEARED ARCHITECTURE FOR GAS TURBINE ENGINE
DRIVE
June 4, 2025
A turbofan engine includes a fan section. A turbine section is in driving engagement with the fan section through a star gear system (48). The star gear system (48) includes a plurality of star gears (82) surrounding a sun gear (74). A carrier (90) supports the plurality of star gears (82) and includes a first carrier bearing flange (128). A ring gear (108) surrounds the plurality of star gears (82) and includes a ring gear bearing flange (124). At least one ring gear carrier bearing (130) engages the carrier bearing flange (128) and the ring gear bearing flange (124). A speed change mechanism (48) for a gas turbine engine is also disclosed.
Discussion in the ATmosphere