Yea, I remembered from 35 years ago, that doubling the diameter
gave you 4 times the energy. Then I decided I better look it up before
I post it, my source had the swept area comment that I included.
Would have been clearer if I hadn't added it, even though it's accurate. :-)
After all the fantastic / fanatic rhetorical questions, insults, beating
around the bush, grandstanding, comparisons, analogies and imagination the
None of these people know.
I think daestrom hit closest to the nail... trial and error in wind
When you look at the average household electric fan, the blades are
large, with practically no clear space between the blades.
Sort of like the propeller on a boat.
But wind turbine blades are long and skinny. Seems to me that they
catch very little wind-force being so skinny.
Why not make them wider (fatter) - more like an electric fan? Might get
more RPM or torque at low wind speed that way.