Hi Ed, thanks for the comments. The blade angle is at 0 degrees. I built it so that the arc was close to a perfect circle when spinning. Hopefully this drawing will explain:
I am thinking of trying a the same design with a 13 degree angle to compare, but that won't be for a little while yet...
As for the wind speed coming from the fan, I have no idea, unfortunatly I do not have an anemometer.... perhaps in the near future I will build one or buy one....
"Any intelligent fool can make things bigger, more complex and more violent. It takes a touch of genius-and a lot of courage to move in the opposite direction
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