Post by tjwilhelm on Dec 13, 2014 22:47:18 GMT -7
This semester, in addition to learning tower-climb competence and tower rescue techniques, my small-wind power students are building a "homebrew" wind generator, from scratch. I got to be involved in a project like this back in June, and now I'm sharing the experience with my Community College students.
We started with blade carving. These laminated, cedar blades are designed with a 5:1 tip-speed ratio, and an angle of attack to the apparent-wind of 4 degrees. By design, the blades taper to the tip and have a slight twist from the root to the tip.
Blade Carving 03 by tjwilhelm148149, on Flickr
Blade Carving 02 by tjwilhelm148149, on Flickr
Blade Carving 05 by tjwilhelm148149, on Flickr
Blade Carving 01 by tjwilhelm148149, on Flickr
Blade Carving 07 by tjwilhelm148149, on Flickr
turbine 01 by tjwilhelm148149, on Flickr
We started with blade carving. These laminated, cedar blades are designed with a 5:1 tip-speed ratio, and an angle of attack to the apparent-wind of 4 degrees. By design, the blades taper to the tip and have a slight twist from the root to the tip.
Blade Carving 03 by tjwilhelm148149, on FlickrBlade Carving 02 by tjwilhelm148149, on FlickrBlade Carving 05 by tjwilhelm148149, on FlickrBlade Carving 01 by tjwilhelm148149, on FlickrBlade Carving 07 by tjwilhelm148149, on Flickrturbine 01 by tjwilhelm148149, on Flickr
