Dual rotor vertical takeoff and landing rotorcraft

US8146854B2 · kind B2 · utility

Inventor

• John M. Lawrence · Newbury, GB

Key dates

• Filing date: Feb 28, 2008
• Grant date: Apr 3, 2012
• Expiry date: Feb 27, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64U2201/20
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A rotorcraft having two coaxial, counter-rotating rotors, one proximate to the forward end of the fuselage and one proximate to the aft end of the fuselage, that generate the forces necessary to lift the craft and maneuver it in the air by adjusting the pitch of the rotor blades throughout their rotation, and a method of flying a dual rotor rotorcraft involving taking off in a vertical orientation, climbing vertically, transitioning to generally horizontal flight, flying horizontally, and subsequently repeating the sequence in reverse to land again in a vertical orientation.