Exciting to watch. Flying by boats on the river in the background.



What makes it resemble a helicopter has no motor spinning it. **

It is powered by the smaller rear propeller, which is what makes it unique

**  A mechanism starts it spinning up to speed, but then disengages.

What a clever idea that is, I wouldn't have thought it would work but it does 

Nice ride 

 Interesting enough so I was able to watch the whole thing, not a very good explanation as to how it works which I wondered about while watching. 
Carl2