Help in designing an Archimedes Wind Turbine
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Help in designing an Archimedes Wind Turbine
Help! i would like to design the blades of an Archimedes wind turbine, but I do not know how to start!
I would consider myself an intermediate, but infrequent user of FreeCAD and I have mainly used it to design rectangular and cylindrical shapes for 3D printing. Now, I would like to use FreeCAD to design the Archimedes blades (see attached image) in a DIY wind harvesting project. I would really appreciated any tips or help to set me off in the right direction.
I would consider myself an intermediate, but infrequent user of FreeCAD and I have mainly used it to design rectangular and cylindrical shapes for 3D printing. Now, I would like to use FreeCAD to design the Archimedes blades (see attached image) in a DIY wind harvesting project. I would really appreciated any tips or help to set me off in the right direction.
Re: Help in designing an Archimedes Wind Turbine
You can try a helix with an angle, or a noral helix where you cut material away with a groove. Shortly before christmas I posted Roland's christmas tree which may serve as inspiration.
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- papyblaise
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Re: Help in designing an Archimedes Wind Turbine
One exemple
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- da Vinci helico.FCStd
- (525.75 KiB) Downloaded 68 times
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- da Vinci helico.PNG (47.83 KiB) Viewed 1793 times
Re: Help in designing an Archimedes Wind Turbine
... having some doubt concerning the aerodynamic efficiency of that prop,
here is a possible design method in FC.
here is a possible design method in FC.
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- SpWindTurbine_2.FCStd
- (369.98 KiB) Downloaded 73 times
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- SpWindTurbine.FCStd
- FC.18.4
- (345.87 KiB) Downloaded 75 times
Re: Help in designing an Archimedes Wind Turbine
... which way does the wind come from?
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- SpWindTurbine_3.FCStd
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- papyblaise
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Re: Help in designing an Archimedes Wind Turbine
it is surprising it seems that there are only 2 propellers offset at 90 °, it must be unbalance
Re: Help in designing an Archimedes Wind Turbine
... my estimation is:
unrolling the blade gives a regular disc. Maybe some sector must be cut out => better not after some finetuning.
A simple part in aluminum with some bolts and a pipe as axle.
3 blades.
unrolling the blade gives a regular disc. Maybe some sector must be cut out => better not after some finetuning.
A simple part in aluminum with some bolts and a pipe as axle.
3 blades.
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- SpWindTurbine_4.FCStd
- (230.39 KiB) Downloaded 77 times
Re: Help in designing an Archimedes Wind Turbine
Some of the images seem to show only two blades, but when you look at more details it appears that three blades are used. Looks balanced. I have no idea if it is just "cute" or if it is really a good choice.papyblaise wrote: ↑Tue Aug 11, 2020 10:16 am it is surprising it seems that there are only 2 propellers offset at 90 °, it must be unbalance
Gene
- papyblaise
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Re: Help in designing an Archimedes Wind Turbine
Ho jes , Ok , whith 3 blades we can to have a good equilibre