I'd like to see this concept revisited with modern technology: https://en.wikipedia.org/wiki/AeroLift_CycloCrane https://en.wikipedia.org/wiki/AeroLift_CycloCr

I'd like to see this concept revisited with modern technology: https://en.wikipedia.org/wiki/AeroLift_CycloCrane https://en.wikipedia.org/wiki/AeroLift_CycloCrane https://hackaday.com/2016/10/06/maybe-your-next-robot-should-be-a-cyclocrane/ https://hackaday.com/2016/10/06/maybe-your-next-robot-should... http://www.robcrimmins.com/wp-content/uploads/2013/10/1982-Nov-Discover-p2.jpg http://www.robcrimmins.com/wp-content/uploads/2013/10/1982-N... Basically an aerial crane which solves the buoyancy problem by spinning the whole thing like a helicopter. It's neutral by itself; if you want to pick something up, you increase rotational speed and generate lift with airfoils. I saw this thing as a kid on a trip through Tilamook OR. Seemed really neat, though I'll bet it was tough to control with early-80s electronics. It would be fun to build a hobby version out of drone parts.