Recently I found a promising new wind mill design for an urban wind turbine based on the magic of the nautilus (logarithmic) spiral.
http://www.gizmag.com/the-archimedes-liam-f1-urban-wind-turbine/32263/
To get some imagination about how the flow will behave in this kind of turbine I decided to do a quick flat design of that spiral and to print a CW and CCW version of it. The results were indeed surprising ...
This is a run of my counter rotating double wheel test mill:
http://youtu.be/8KqlQAKgarE
I guess it also will be usable for decorative or kinetic art purpuses.
What you get:
What you need
| Nautilus_wheel-2arms.stl | 2.0MB | |
| Nautilus_wheel-3arms-wide.stl | 1.5MB | |
| Nautilus_wheel-6arms.stl | 2.8MB | |
| Nautilus_wheel.scad | 1.5KB | |
| Nautilus_wheel.stl | 3.0MB | |
| Nautilus_wheel_CCW.stl | 3.0MB | |
| Nautilus_wheel_noSpokes.stl | 1.4MB | |
| shortcuts.scad | 15.3KB |
