Monthly Archives: December 2012

It might be better in the donutcopter to not even move the “up” pipe and the “down” pipe at all.  Right between the two vertical pipes on the torus, we could slide a plate, with a hole on one side, … Continue reading →

Alan DiCenzo Donutcopter (Pistoncopter) VersionMy latest variation, and possibly the best, on the pistoncopter is the donutcopter. Please see the attached drawing. With this version, the piston NEVER stops and NEVER changes direction. Stopping and starting obviously rob us of … Continue reading →

   Hey, if I’m correct that the extremely low piston speeds of my contraption (compared to heli “supersonic” rotor tips) allow us to assume low turbulence losses, then the idea for an incredibly simple horizontal configuration makes sense, in which … Continue reading →