Sigh, upon further surfing I have come to the conclusion that this guy is comprehensively doomed to failure. I remember seeing something on boingboing or somewhere a year or two ago about a dude working on a ducted fan backpack. And then there is the Moller aircar, perpetual vaporware.
I strongly suspect that all these concepts are so aerodynamically unstable (fuck, the hoverbike’s center of gravity looks like it’s above the rotors!) that they are essentially doomed without some super-whizzy dynamic stabilization technology. Basically these things are trying to be the aerodynamic equivalent of the Segway – balancing the rider on top of a fundamentally unstable source of lift.
Helicopters have enough troubles with this already, and the Osprey spent billions of dollars trying to get it right (have they even now got the V-22 working properly?). So this fellow… well, he’s doomed by the difficulties of high torque and vortical airflow. I suspect if he were a helicopter engineer he would never have started this project.
Someday this may be possible on the cheap, but not yet, I don’t think, at least not without some super high powered control software in the loop. Maybe Carmack could pull it off…
I appreciate the engineering quality of this machine, but without a farm of supercomputers and testing equipment to determine exact airflow characteristics of his machine… yeah he might be pretty d0med.
Two rotors seems like it’d be tough to balance, especially with the center of gravity issue. 3 on the other hand, in a isosceles or equilateral configuration, seems more balanced. You could have 2 running clockwise, 1 running counter clockwise, with the clockwise one running at half speed or whatever is needed to balance out the torque.