Fancy Ripcord Flyer Blades (parametric)

My take on the ripcord flyer blades for the amazing thing [3867577](https://www.thingiverse.com/thing:3867577) from [thjelmfelt](https://www.thingiverse.com/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