forked an open source toroidal propeller generating tool to add the appropriate hub for the launcher. Flies much further than the propeller design in the original project!
Modified in Solidworks after export from SCAD to add fillets.
https://github.com/earlynerd/Ultimate-Toroidal-Propeller-Generator
The author remixed this model.
Toroidal Propeller compatible with gearbox launcher. reused and modified the provided SCAD file to add the twisted hub to another open source project that generates toroidal propellers.