US Patent 10399000 Flying disk with airfoils

An aerodynamic flying device combines features of a flying disk and a boomerang. The device uses a closed dome flying disk with one or more cambered wings attached to the disk. The wings have their leading edges facing in the direction of rotation of the disk. The wings may be asymmetrically cambered or may be symmetrically cambered about the center line of each wing. An outer ring is attached to the outer edges of each wing. A downwardly dependent curved rim runs along the outer periphery of the device with a discontinuity of the rim occurring along the joinder line whereat each wing attaches to the disk. Another discontinuity of the rim may occur along a portion of the trailing edge of each wing.