A rotor-lift aircraft has at least two rotors 1, 2 mounted on spaced parallel axes A1, A2. The rotors rotate in use in planes in which the blade envelope subscribed by the tips of the blade(s) of each of the rotors overlaps with the blade envelope subscribed by the tips of the blade(s) of at least one other of the rotors without intermeshing of the blades.
ROTOR-LIFT AIRCRAFT
2017-06-22
Patent
Electronic Resource
English