@astrialkil Yes, and I have a stiffer fabric that retains its shape better and is now constrained by thin cords so it can't fold over. This was a first concept test that worked very well and took only tiny modifications to become practical.
just how tall do you want to make that? how about doubling the number of flaps (either a taller structure or a hexapod instead of tripod design)... or do both and quadruple the torque...?
@robotguy The typical model will be about 2 meters tall. It will normally have four vanes instead of three. The four-vane model gives optimum torque because more vanes add numerically less by angle while adding to the mass. Five might work well however, depending on the weight of the material used.
Note that the video response from TheWindGinProject is nearly identical to my VAWT3 that I built and tested about a year ago, but with longer arms. WindGin, have you built your model yet? The torque is great and longer arms dampen the return stroke from the blades.
If you put a piano wire along the bottom of the fabric it would stiffen it and stop folding over at the edges.
astrialkil 1 year ago
@astrialkil Yes, and I have a stiffer fabric that retains its shape better and is now constrained by thin cords so it can't fold over. This was a first concept test that worked very well and took only tiny modifications to become practical.
thorargent 1 year ago
just how tall do you want to make that? how about doubling the number of flaps (either a taller structure or a hexapod instead of tripod design)... or do both and quadruple the torque...?
robotguy 1 year ago
@robotguy The typical model will be about 2 meters tall. It will normally have four vanes instead of three. The four-vane model gives optimum torque because more vanes add numerically less by angle while adding to the mass. Five might work well however, depending on the weight of the material used.
thorargent 1 year ago
Note that the video response from TheWindGinProject is nearly identical to my VAWT3 that I built and tested about a year ago, but with longer arms. WindGin, have you built your model yet? The torque is great and longer arms dampen the return stroke from the blades.
thorargent 1 year ago