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freebeard · 06-27-2017, 02:42 PM

The story was about 'Segmented Ultralight Morphing Rotors'. The segmented part is for manufacturability and deliverability. the Morphing part is that the rotor (modeled on a Palm tree trunk) absorbs the stress of the wind shadow. If the blades are upwind they have to be stiff enough to avoid a strike on the tower.

Here's another article on the segmented blade.

https://cleantechnica.com/2011/12/09...-blade-design/

They also show a turbine with a hubcap.

Ferdinand Porsche built a trailing windmill in the 1930s. I can't find a picture of it online but one appeared in a Porsche magazine called Christopher. Maybe I'll find my copy someday.

If the wind shadow is really a problem, why don't they boat tail the tower?

06-27-2017, 02:42 PM	#254 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 28,557 Thanks: 8,092 Thanked 8,883 Times in 7,330 Posts	The story was about 'Segmented Ultralight Morphing Rotors'. The segmented part is for manufacturability and deliverability. the Morphing part is that the rotor (modeled on a Palm tree trunk) absorbs the stress of the wind shadow. If the blades are upwind they have to be stiff enough to avoid a strike on the tower. Here's another article on the segmented blade. https://cleantechnica.com/2011/12/09...-blade-design/ They also show a turbine with a hubcap. Ferdinand Porsche built a trailing windmill in the 1930s. I can't find a picture of it online but one appeared in a Porsche magazine called Christopher. Maybe I'll find my copy someday. If the wind shadow is really a problem, why don't they boat tail the tower?