A while back, we wrote about the ducted fan, single rotor, VTOL drone that [Armin Strobel] was working on. It wasn’t quite finished then, and hadn’t got off the ground yet. He’s posted an ...

In the 1960s, France developed the Nord 500—a vertical takeoff and landing aircraft powered by twin ducted fans that promised speed, agility, and versatility decades ahead of its time.