That lab demo unit was only producing 18w.. It seems like it should have been more..
I like the design, but I wonder if it can really get that 3x power when done on a large scale.
I can see how the flared rim produces a low pressure bubble downwind of the blades,
but if the blades were real long, the turbulence might just form a thin doughnut
of low pressure, with normal air pressure in the center of the output flow path.
And, will extra strong winds push the bubble so far downwind that it's
not going to help as much..
Can't wait to see these on Ebay..
