NASA/MLB Dos Samara VTOL Concept

Vertical Takeoff and Landing aircraft concept that uses single blade rotors (Samara – or maple seed). The single blades are stopped in cruise to avoid the trailing edge stall problem of conventional rotorcraft. The blades are designed to operate at low tip speeds (~300 ft/sec), which also coincides with the sizing to carry the cruise loads as wing panels. Each Samara blade utilizes swashplateless technologies such as the Heli-flap, to provide full cyclic and collective blade control. The overall purpose of the concept is to achieve matching of the power required in hover and at cruise.