B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
Aerodyne a decollage et atterissage verticaux comprenant des nacelles d'helice aptes a pivoter librement de 90° sous le controle de moyens de freinage