Patent ID: 11970277
Assignee: TEXTRON INNOVATIONS INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. A hybrid propulsion system for an aircraft, the hybrid propulsion system comprising:
an engine disposed within a fuselage of the aircraft;
two electrical generators disposed within the fuselage and connected to the engine;
two nacelles, each nacelle comprising a proprotor, and each nacelle housing two electric motors connected to the proprotor;
wherein each electrical generator is connected to the two electric motors in each nacelle;
wherein the proprotors provide lift for vertical takeoff and landing in a helicopter mode; and
a fan coupled to the fuselage and connected to two additional electric motors, each additional electric motor connected to one of the two electric generators, wherein the fan provides thrust for forward flight during an airplane mode;
wherein the airplane mode includes increasing power to the fan while decreasing power to the proprotors to zero.