Patent ID: 11860622
Assignee: AERGILITY CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC G  B  H | IPC B  G  H

Claim 0:
1. An aircraft, comprising:
a fuselage;
a propulsion engine coupled to the fuselage and configured to generate thrust to propel the aircraft along a first vector during forward flight; and
coaxial pairs of rotors coupled to opposite sides of the fuselage and configured to provide lift to the aircraft along a second vector during forward flight, each rotor comprising blades that rotate about a rotor axis, each rotor axis fixed in orientation relative to the fuselage, each rotor coupled to a motor, and each motor configured to supply power to and draw power from the coupled rotor,
wherein power being supplied to or drawn from each rotor by its corresponding motor adjusts a rotational frequency of the rotor to provide attitude control for the aircraft,
wherein each rotor is inclined at an inclination angle with respect to a horizontal plane extending through the rotor axes,
wherein the inclination angle is measured above or below the horizontal plane and is based on a rotational direction of the corresponding rotor about its rotor axis and a position of the corresponding rotor relative to a center of the aircraft,
wherein the inclination angle of respective rotors in each coaxial pair is equal and opposite with respect to the horizontal plane and is mirrored for the coaxial pairs on opposite sides of the fuselage, and
wherein the inclination angle is such that operation of each rotor provides a yaw moment about the center of the aircraft that acts in a same direction as a torque generated by each rotor when each rotor operates in autorotation.