A patent filed by Airbus makes claims to an invention of an aircraft capable of vertical takeoff that can transition to horizontal flight. The aircraft employs at least four rotors to supply vertical lift. These are powered by independent electric motors and would operate in a very similar fashion to a quadcopter. Energy for theses motors would be provided by batteries and a generator connected to an internal combustion engine. This same engine will power a forward facing propellor that will pull the aircraft through the air once transitioned to horizontal flight.