Open source Windmill design.

[gavztheouch]

Im not sure if this has been done already but I was thinking of putting together an open source Wind turbine design complete with cad files and some clear step by step .pdf plans

Anyone intrested in helping out?

My cnc is not up and running yet so this is a bit of a premature project, but I can help out with the chassis and tower deisgn. I have plenty of space and a decent workshop to prototype our designs.

I have setup a forum not sure if I can post the link here but you can PM for the address or we can start a thread here, though it would be usefull to have a subforum with multiple threads as im sure it will get messy in just one thread.

[pminmo]

Actually I think there already out there, including the G-code for blades. Not sure if this was the site or not. http://www.windstuff.org/ the blade G-code I believe was a thread here at the CNCzone.

[40fordcoupe]

Still it might be useful to have more information here. That is, it will reach a different audience. I personally would like to see a good DIY vertical shaft design.

[TomB]

I have played with very preliminary designs for vertical shaft turbines. They have some advantages when compared with horizonal shaft turbines in that they can utilize a larger cross section in comparision with required footprint size, they adapt to directionally shifting wind, and I think they could be deployed to hill and mountain tops with less aesthetic impact. But most vertical turbines must be started with an auxillary motor and that implies controls to determine when the wind is strong enough to justify the starting process and an available starting power source.

I can imagine a self starting the turbine that adjusts blade angle to extract energy in the downwind side while slicing through the wind on the other side. That adjustment could be made passivily, think in terms of a helecopter comuntator, but I think it would require some serrous computational fluid dynamics simulations plus some thoughtful mechanaical vibration analysis to tune the design.

Tom

[40fordcoupe]

I have not actually tried to build a vertical turbine, but I have studied a number of them. I do agree that borrowing from helicopter technology makes a lot of sense. The generator itself could be used as the starting motor if need be. Maybe a microcomputer could be used to control the system?

[Energy Rebel]

Sounds good to me. I've been wanting to try a homemade vertical just to see how well it works. I'm sure it would be a crude prototype but what the heck?

I'll send you a pm.

[BJenkins]

Hi,

You might find my VAWT concepts interesting. Here are the video links.

"http://www.youtube.com/watch?v=mXCguElUR3M"]YouTube- Wind Gin - Long Version - 9m24s

"http://www.youtube.com/watch?v=JpE5qQVSP5I"]YouTube- Wind Gin - Short Version - 2m36s

Good Luck!
Bill

[40fordcoupe]

Very good! Would be a very interesting project. My ideas are pretty primitive by comparison. Usually involving something like cutting a bunch of barrels in half. LOL Thanks for sharing.

[abbabba]

The idea is quite clever. From the practical point of view however, I think the wear and tear will kill the idea. And there is the noise as well. I don't think the neighbours would approve. Good luck with your pursuits though. abbabba

[BJenkins]

I have added some explanations to the Wind Gin Long Version.

Thank You,
Bill Jenkins

[40fordcoupe]

Bill,
have any of your design been built and tested yet?
Thanks,
Bob

[BJenkins]

Hi Bob,

I did a very rough experiment that I assembled on site about 9 years ago of the J1 design. The experiment proved out the basic mechanics but that's it. No Shop + No Money = No More Experiments. I have a 20 second video of it working but the simulations do a much better job.

I started learning CAD a couple of years ago and I decided to attempt the design concept in 3D. I knew it would have a wild look but I decided to do it anyway. I think the design is simple but I certainly understand that others will see it as too complex. I do think the design could be simplified a good bit.

Thanks for your interest!
Bill