3d printed wind turbines collection

Hello, we are a group of friends that is developing several vertical/horizontal wind turbine devices and we are also developing a new concept of a multi-stage VAWT. A group of students at the Munich University of Applied Sciences have asked us to give them information for their construction class project of our multi-stage & multi-generator vertical wind turbine system and they delivered in June a pdf of 107 pages that we have attached in this topic.

This is our website where it can be found several videos and other things about our projects,
https://www.kolibriwindstorm.com/

And below you can find a video that shows all the devices in action,
https://youtu.be/WNd7hWqSSfQ