Vertical Axis Wind Turbine
Merry-Go-Wind

This small VAWT (Vertical Axis Wind Turbine) needs to be computer simulated before building a prototype. It has pins on the top and bottom of blade tips that run in tracks to control blade pitch. There are 2 basic wind forces used to drive VAWTs ones that utilize the drag force of slow wind speed and ones that utilize the thrust force of high wind speed. This design has an inner track to take advantage of drag and an outer track to take advantage of thrust. It also has switch tracks that interconnect the inner and outer tracks so the blades can move from the inner track in slow speeds to the outer track as the wind speeds up. The switches are to be located so the blades automatically go from the inner track to the outer track as wind speed increases and back when it slows down using centrifugal force that increase as the RPM increases. This design is totally conceptual and I’m not sure if will work at all but to an inventor, not knowing if something will work is most troubling! There are many variables i.e. number of blades, blade profile, blade height to width ratio that will need to be optimized if it works at all. The idea is to make it 100% out of plastic using injection molded and roto-molded parts and to pay a return on investment quicker then the big Horizontal Axis Wind Turbines. Something that anyone can afford and plug into an outside 120W outlet for around $150.