Weird blades

The blades of the turbine, and the hub they are attached to

Weird blades

Postby windgat on Fri Jan 15, 2010 4:55 pm

Here are some blades I spotted a while ago. On the face of it, they seem to contradict several basic design principles. Any comments?
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Weird Blades
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Re: Weird blades

Postby danielxavier on Fri Feb 18, 2011 9:21 am

Must be somekind of high torque blade design. Surely they can't go fast. Looks like it captures the wind somehow, but the blades is not pitched very much. Hmm.. Hard to think it's effecient in any kind of way. :D
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Re: Weird blades

Postby windgat on Sun Mar 06, 2011 10:20 am

Yes - large surface area, therefore high torque slow speed. Also note how the blades are broader nearer the tip, the opposite to the usual aerodynamic design.
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Re: Weird blades

Postby dawie on Mon Mar 07, 2011 11:25 am

What is the scale/ diameter of these blades? Looks like bicycle spokes were used...

Maybe more of an artist's effort/ creation?
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Re: Weird blades

Postby windgat on Mon Mar 07, 2011 1:48 pm

Each blade is at least 1m long. Perhaps the diameter is about 2.5m. As far as I know, its intended as a new design which is claimed to be more efficient than the more usual thin blade design.
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Re: Weird blades

Postby zohanx747 on Mon Nov 04, 2013 7:52 am

Also note how the blades are broader nearer the tip, the opposite to the usual aerodynamic design.
ZoHaN
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Re: Weird blades

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