Fancy Ripcord Flyer Blades (parametric) by wbu42

Last crawled date: 3 years, 1 month ago

My take on the ripcord flyer blades for the amazing thing 3867577 from thjelmfelt with the following design goals:
better looks
use a proper air foil
slightly more weight on the outer ring to increase rotation energy
proper twisting of the blades to get constant pitch over the full blade
smaller profile on the outer side to account for higher velocity and to reduce lift-induced drag
printable without supports
fully parametric design
So far I only printed two versions myself:
diameter 120mm, pitch 120mm, straight trailing edge
diameter 120mm, pitch 80mm, straight trailing edge
They fly well, but the 80mm pitch variant has quite some overhang on the outer blades. The printing quality without supports was still acceptable.
If you print other versions, then please let me know how they fly!
The freecad file is included and you can easily adapt the design by changing values in the config sheet. With extreme values, the top level "filet" might break and has to be fixed or removed.