Tags: Aircraft.
The Aerocopter Sarus is a mono-tilt-rotor rotary-ring VTOL aircraft currently under development by Aerocopter Inc. It differs from previous tiltrotors in that instead of each rotor consisting of long blades attached to a central rotary ring it has a single rotary ring which has a diameter equal to the entire wingspan of the aircraft with the ring being attached to the tips of the wings. Small blades are attached to the outside of the ring.