An assembly for an aircraft includes a carrier (90), a first gear system (86), a second gear system (88) and an idler gear (92). The first gear system (86) includes a first sun gear (94), a first ring gear (96) and a plurality of first intermediate gears (...

Aircraft power and propulsion systems 100 and methods 300 of operating such power and propulsion systems 100 are provided. One such method 300 comprises: operating one or more electric machines 111, 112 of one or more gas turbine engines 110; 110a, 110b as...