Noah Schachtman - a freelance writer has filed a concept proposal with DARPA for a dual powerplant prototype UAV, the , that function in two modes. Propeller driven with long wings and a light wing loading for long endurance and hovering - convertable to a DASH mode, jet powered upon dropping its wings and conversion to a sleek jet profile.
FanWing - a means of integral lift and thrust using a horizontal-axis wing rotor.