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It’s amazing that the world is still seeing innovation on something as simple as a propeller, the limits of science are so vast!
Curious. Could you 3d print a propeller or does it demand some sort of higher quality manufacturing process? For a DIY drone project slapping some toroidal propellers just to test it out seems doable.
It’s been done a lot, but its kinda pointless as any noise improvements from the shape are obliterated by the bad surface finish.
Yes, they still work if they are 3d printed and you can even find files online for them such as this
