Rotor system for electrically powered rotorcraft

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12049305
SERIAL NO

18220720

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A rotor system for electrically powered rotorcraft is described, providing the benefits of autorotation for safety, and fast thrust response, regardless of rotor inertia. The rotor system includes a rotor hub and two or more rotor blades, and an electric motor driving the rotor hub. The rotor hub includes a mechanism which adapts the collective incidence of the rotor blades in response to the torque applied by the electric motor. When there is little or no motor torque, the rotor hub holds the blades at a shallow incidence, which supports autorotative descent. During autorotative descent, the motor controller coupled to the electric motor utilizes electrical braking to moderate the rotor RPM and thrust. When the electric motor provides power to the rotor for normal flight, the collective blade incidence adjusts in response to the motor torque, providing a fast response in rotor thrust, thus avoiding the lag in rotor thrust that would occur through RPM control.

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Patent Owner(s)

Patent OwnerAddress
SIFLY AVIATION INC907 LAURELES GRADE RD CARMEL VALLEY CA 93924

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hinman, Brian L Carmel Valley, US 58 2946
Javaid, Muhammad Mubeen Punjab, PK 3 1

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