초록

A rotary-wing aircraft with an electric motor mounted along an axis of rotation to drive a rotor system about the axis of rotation.

대표청구항 ▼

1. A rotary-wing aircraft comprising: a rotor system rotatable about an axis of rotation; andan electric motor mounted along said axis of rotation to drive said rotor system about said axis of rotation; anda servo system mounted within said rotor system to pitch a rotor blade mounted to a rotor hub.

1. A rotary-wing aircraft comprising: a rotor system rotatable about an axis of rotation; andan electric motor mounted along said axis of rotation to drive said rotor system about said axis of rotation; anda servo system mounted within said rotor system to pitch a rotor blade mounted to a rotor hub. 2. The aircraft as recited in claim 1, further comprising a controller within said rotary-wing aircraft to operate said servo system. 3. A rotary-wing aircraft comprising: a rotor system rotatable about an axis of rotation; andan electric motor mounted along said axis of rotation to drive said rotor system about said axis of rotation, said electric motor mounted at least partially within a rotor hub of said rotor system. 4. The aircraft as recited in claim 3, further comprising a rotationally fixed rotor shaft which mounts said rotor hub. 5. The aircraft as recited in claim 3, wherein said electric motor is an overrunning motor. 6. The aircraft as recited in claim 3, further comprising a servo system mounted within said rotor system to pitch a rotor blade mounted to a rotor hub. 7. The aircraft as recited in claim 6, further comprising a controller within said rotary-wing aircraft to operate said main rotor servo system. 8. The aircraft as recited in claim 3, wherein said electric motor is mounted completely within said rotor hub. 9. The aircraft as recited in claim 3, wherein said servo system is operable to pitch a rotor blade mounted to said rotor hub. 10. A rotary-wing aircraft comprising: a rotor system rotatable about an axis of rotation; andan electric motor mounted along said axis of rotation to drive said rotor system about said axis of rotation, said electric motor mounted at least partially within a rotor shaft of said rotor system. 11. The aircraft as recited in claim 10, wherein said electric motor is an overrunning motor. 12. The aircraft as recited in claim 10, further comprising a servo system mounted within said rotor system to pitch a rotor blade mounted to a rotor hub. 13. The aircraft as recited in claim 12, further comprising a controller within said rotary-wing aircraft to operate said servo system. 14. The aircraft as recited in claim 10, wherein said electric motor is mounted completely within said rotor shaft. 15. The aircraft as recited in claim 10, wherein said servo system is operable to pitch a rotor blade mounted to said rotor hub.