Speed-reducing gear unit to absorb the axial loads generated by a turbojet fan

摘要

A turbojet engine having a fan (12) driven by a speed-reducing gear unit (23) whose input is driven by a turbine shaft (22). The speed-reducing gear unit (23) includes a planet gear (24) affixed to a turbine shaft (22), a ring gear (28) joined to a fan shaft (12) and a plurality of satellite gears (25) mounted on a stationary satellite support (27) and having helical teeth which operatively engage with helical teeth of the ring gear and the planet gear to balance axial loads along the turbine shaft and the fan shaft.