Patent ID: 11958624
Assignee: RTX CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 18:
19. An assembly for an aircraft, comprising:
a rotating structure comprising a turbine rotor;
an epicyclic gear system including a sun gear, a ring gear and a plurality of intermediate gears, the sun gear rotatably driven by the rotating structure, and each of the plurality of intermediate gears between and meshed with the sun gear and the ring gear;
a carrier rotatably supporting each of the plurality of intermediate gears;
a first propulsor rotor coupled to the ring gear;
a second propulsor rotor coupled to the carrier; and
a lock system configured to at least one of
lock rotation of the ring gear about a centerline axis during a second propulsor mode of operation; or
lock rotation of the carrier about the centerline axis during a first propulsor mode of operation.