Austrian research company IAT21 has presented a new type of aircraft at the Paris Air Show which has the potential to become aviation's first disruptive technology since the jet engine. Neither fixed wing nor rotor craft, the D-Dalus uses four, mechanically-linked, contra-rotating, cylindrical turbines for its propulsion, and by altering the angle of the blades, it can launch vertically, hover perfectly still, move in any direction, and thrust upwards and hence "glue down" upon landing, which it can easily do on the deck of a ship, or even a moving vehicle. It's also almost silent, has the dynamic stability to enter buildings, handles rough weather with ease, flies very long distances very quickly and can lift very heavy loads. It's also so simple that it requires little maintenance and requires no more maintenance expertise than an auto mechanic. It accordingly holds immense promise as a platform for personal flight, for military usage, search and rescue, and much more.