De-couple geared turbo-fan engine and aircraft

摘要

A turbofan engine includes a core engine section including a compressor section feeding air to a combustor to generate high speed exhaust gases that drive a turbine section all disposed about an engine axis, a geartrain driven by the core engine section, a fan section driven by the geartrain about a fan axis spaced apart from the engine axis, and an accessory gearbox driven by the geartrain and mounted apart from the core engine section and the fan section.

主权项

1. An aircraft propulsion system comprising:
a core engine section mounted within an aft portion of an aircraft fuselage, the core engine section including a compressor section feeding air to a combustor to generate high speed exhaust gases that drive a turbine section all disposed about an engine axis; a geartrain mounted within the aircraft fuselage and driven by the core engine section; a fan section externally mounted to the aircraft fuselage and driven by the geartrain about a fan axis spaced apart from the engine axis; and an accessory gearbox supported within the aircraft fuselage and driven by the geartrain and mounted apart from the core engine section and the fan section, the accessory gear box driving at least one system required for operation of the core engine section, wherein the core engine section comprises a first core engine section disposed about a first axis and a second core engine section disposed about a second axis different than the first axis, the first core engine section and the second core engine section mounted within the aft portion of the aircraft fuselage and the fan section comprises first and second fan sections driven by a corresponding one of the first and second core engine sections.