AIRCRAFT PROPULSION SYSTEM

摘要

An aircraft propulsion system (10) or a fixed wing aircraft (12) having a power plant or gas turbine engine (18) driving a number of outboard propulsion units (20) mounting to pylons (24) extending laterally outwardly from the fuselage (14) of the aircraft and propelling the fixed wing aircraft (12) via mechanical transmission (28). The propulsion units (20) are powered by the gas turbine engine (18) independently from one another to permit selective shutdown of at least one of the propulsion units (20) while still allowing the remaining propulsion units (20) to be driven by the engine (18). The mechanical transmission (28) is a multibranch transmission wherein an overload decoupling device (48) is provided in each transmission shaft branch (30) set to automatically disconnect an associated propulsion unit (20) when a predetermined critical value is reached. Both the propulsion units (20) and the gas turbine engine (18) having lubrication systems (50, 54) to lubricate transmission components and the decoupling devices (48).