This looks like too much fun, he has the quick fabrication skills for doing experiments that I admire.
He's moving air, so it is aerodynamically related. 
Blower impeller design experiments
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Comparing forward curved blades, backward curved blades and straight blades for a blower impeller.
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I see now why hovercraft use the straight and backward curved for high pressure lift fans.
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
Last edited by kach22i; 11-20-2018 at 09:45 AM..
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