3D Printed VAWT version 8

First published at 17:17 UTC on July 9th, 2021.
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A quick test of an NPL EC series airfoil with 67mm chord and 40% thickness. It is bent around the radius with no additional mounting angle. It seems to start in lower wind and accelerates smoothly. So it appears to be an acceptable wing. Efficie…

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CategoryDIY & Gardening
SensitivityNormal - Content that is suitable for ages 16 and over
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