The human-powered helicopter challenge 13 years ago
Given the span of the rotors and distance from the ground, it looks as if they have designed it specifically to fly in ground effect, which puts a pretty low ceiling on it.
It also means they have more of a ground effect craft than a helicopter. We'll call it a RIG (Rotor in Ground-effect) as opposed to WIG craft as we did for the fixed wing Russian varriant. http://www.youtube.com/watch?v=rUTWWsh6iGA