Human-Powered helicopter GIF

no way... awesome

What if one of those hit you and knocked you off?

I don't understand how that person doesn't lose his balance and fall off o_o

Why are we not funding this?

Can anyone explain this? because the blades are going too slow to generate impulse, or does the size of them compense for speed?

What happens when you get tired?

Patsu!!

That so big how wpuld.it work in high wind qpuld.it just crash?