Interesting, nice graphic, and it “works great” as long as it remains “on paper”. Savonius… something beginners can understand…
Level after level of loops: what could possibly go wrong? Ever had your chain come loose on your bike? And that is a fixed geometry, not floating in the sky, where everything could come loose in a downdraft.
This would appear to be a watered-down version of the old concept from the 1970’s, more recently renamed as “Laddermill”, which had already conceptually transitioned to SuperTurbine™ by the 1980’s. As in, this idea would naturally lead to laddermill, which leads to SuperTurbine™.
OK there is a picture of a couple of dust-devils here in the dusty desert. They happen everywhere, but because of the dust here, you can see them. It is rotating air. You see the central tube, but it is surrounded by a wide field of rotating air. All the windmills switch directions and lawn furniture goes airborne as they roll through. Wish I could show you the videos, which more clearly show the well-defined rotating tube structure, but they are too many Megabytes to e-mail out of my phone.
Here’s a picture taken the other day of a tree blown over on an otherwise calm day. Raindrops were falling when it happened. Not sure if it was a dust-devil, or a wannabe-tornado, or maybe some combination, but I was standing across the street and heard the CRACK as the tree was slammed to the ground.
How do you think such a stacked-savonius with multiple levels of rope-drives would fare in such a rotating airmass? How about a whole windfarm full of them? Maybe you could get paid to cart away the resulting debris. Maybe they could hold another auction!