Channel wing

The conventional aircraft must reach a significant minimum speed before this pressure differential become large enough that it generates sufficient lift to become airborne.

The layout was not successfully proven in an aircraft for a long time, though Custer showed theoretically and experimentally that the principle was capable of vertical flight.

Full vertical takeoff is theoretically feasible, but would require additional modifications and means of control.

The CCW-5, which was based on the Baumann Brigadier executive aircraft, is exhibited at the Mid-Atlantic Air Museum in Pennsylvania.

Aircraft were tested using channel wing principle layouts with circulation control devices that leveraged the Coandă effect.

[1] In 2017, aerospace startup Hop Flyt Inc. was founded around the concept of eVTOL aircraft that use channel wing technology to achieve vertical flight.

[3] Hop Flyt Inc. has continued to develop VTOL channel wing technology through sub-scale unmanned flight test.