Dornier Aerodyne

The Dornier Aerodyne was a wingless VTOL unmanned aircraft. Designed by Alexander Lippisch . The first flight took place on 18 September 1972. . he principle behind the Aerodyne is the combination of lift and thrust production in a single construction unit and flow channel, namely a ducted fan . Flaps at the end of the fan deflect the outgoing air to produce lift, thrust or a combination of both. source wikipedia