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

Claim 14:
15. A tiltrotor craft comprising:
a fuselage;
an engine disposed within the fuselage;
two electrical generators disposed within the fuselage, each electrical generator connected to the engine;
two wings connected to the fuselage;
two rotatable nacelles, each rotatable nacelle disposed on a respective wing and comprising:
a proprotor disposed at a forward end of the rotatable nacelle to provide lift for vertical takeoff and landing and for stationary flight in a helicopter mode and thrust for forward flight in a first airplane mode, and to provide a reduced thrust during a second airplane mode; and
two electric motors disposed within the rotatable nacelle and connected to the proprotor, each electric motor connected to the two electric generators; and

a fan disposed within the fuselage and connected to two additional electric motors disposed within the fuselage, each additional electric motor connected to the two electric generators, wherein the fan is powered and provides forward thrust for forward flight during the second airplane mode;
wherein the first airplane mode is converted to the second airplane mode by increasing power to the fan while decreasing power to the proprotors to zero; and
wherein the second airplane mode is converted to the first airplane mode by decreasing power to the fan while increasing power to the proprotors.