Ring Frisbee (Print and glue)

thingiverse

This is a ring frisbee that flies with a straights and level flight path with a slight left turn at the end. It uses a lifting aerofoil that i drew at random and a 1.2 degree negative angle of attack, that i settled on after a lot of trial and error. The negative angle of attack is to balance the center of lift to the center of the ring in order to minimize turning because of gyroscopic precession.