Monospinner

[electrotor]

I couldn't really put this in the multicopter section as it is a monocopter, but not a helicopter.
Who's going to be the first to try and fly this wearing goggles?  :dazed:

[FPVSteve]

I wonder how sudden changes in throttle affect it. Bizarre contraption :)

Perhaps the technology will be useful for detecting a prop failure in a quad and allowing it to land safely?