Pivoting Wings require no Actuators or Control SurfacesWings are pivoted by differential thrust from two electric props connected to each wing. No control surfaces, servos or actuators are required. During rotary wing flight, cyclic and collective pitch is accomplished by controlling the pitch of the wings through differential thrust. During fixed wing flight pitch, roll and yaw can all be accomplished by controlling the amount of thrust produced by the electric props.
Simple ConstructionAirframe construction is as simple as two freely pivoting wings attached to a rotating hub. Each wing has two electric props to drive the wing forward, and to control the pitch of the wing. The concept may have as few a seven moving parts.
Vertical TakeoffTo perform a vertical takeoff, the wings position themselves in opposing directions, creating a two bladed helicopter rotor. The four electric props then drive the wings around a vertical axis, lifting the aircraft into the air.
Transitioning to Fixed Wing FlightThe aircraft dives to transition to fixed wing flight. The fuselage is passively stabilized by the rear stabilizer and the pivoting wings passively turn to face the relative wind. The yaw position of the wings is actively controlled by the electric props while the horizontal stabilizer pulls the aircraft up.
Transitioning to Rotary Wing FlightTo transition into rotary wing flight, a flat spin stall is induced. The electric props then begin to power the wings in a rotary fashion.
Horizontal, Fixed Wing FlightWhile flying in fixed wing mode, thrust is created by the four electric props, which can be highly optimised for creating efficient thrust, since they never have to lift the aircraft or meet the demands of limited runway space.
EfficientLift is created by the two large wings in both vertical and horizontal flight modes, meaning that the aircraft is always lifted efficiently. The four electric props never need to provide strong static thrust for lifting, so they can be optimised for efficient forward flight instead.
PerformanceDuring vertical flight, the wings are able to alter their pitch quickly, at any point in the rotation cycle, giving them cyclic and collective control like a helicopter. During horizontal flight, the four electric props are able to provide precise pitch and yaw, while the pivoting wings enable roll.
Lightweight and Low DragIn it’s simplest form, the Pivotwing has around seven moving parts and no actuators or transmission systems. This results in a lightweight, low drag airframe.
Every component is used efficently in both vertical and horizontal flight modes