Lockheed Martin/Kaman Aerospace has released this video of the coaxial-rotor K-Max successfully completing its quick reaction assessment – the last step in a roughly eight-month competition phase.
The five-day assessment will help to determine whether the K-Max unmanned helicopter will be selected for a six-month deployment to Afghanistan.
Source: YouTube
Nice machine!
But it has not coaxial rotors, the axes are “almost” parallel, counter-rotating in “almost” the same plane.
K-Max can be considered a variant of the Focke-Achgelis Fa 61, the first fully controllable helicopter designed by prof. Focke. Flights of the Fa 61 inside the “Deutschlandhalle” at the Berlin Motor Show in 1938 were performed by Hanna Reitsch, the famous women test pilot.