Physics of Frisbee

The frisbee's rotation creates an angular momentum perpendicular to the horizontal plane, stabilising the disc's altitude in high-speed flight.

Small ridges near the leading edge act as turbulators, reducing flow separation by forcing the airflow to become turbulent after it passes over the ridges.

Lift is generated in primarily the same way as a traditional asymmetric airfoil, that is, by accelerating upper airflow such that a pressure difference gives rise to a lifting force.