This is a project I built in high school when I was interested in renewable energy. This wooden turbine prototype was designed to react to wind in any direction and have as little resistance as possible. Each turbine flap is hinged so that each will fold in against the center of the turbine when moving into the wind but extend when moving with the wind. The hope was to gain the maximum efficiency from a breeze.
When it was done it did work. But because the wood is a little too heavy for the application, when the turbine began to spin very quickly the flaps would begin to extend, due to the centrifugal force, and the efficiency would be lost. But that is an easy problem to fix with reduced generator speed and lighter flaps.
It was made with a lazy-susan and a few scrap pieces of plywood from the high school wood-shop.
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