Deflected slipstream vertical lift airplane structure
Deflector blade of variable camber
Directional control of engine exhaust thrust vector in a STOL-ty
Disc-shaped submersible aircraft
Discus-shaped aerodyne vehicle for extremely high velocities
Dolphin cascade vane
Ducted fan vehicles particularly useful as VTOL aircraft
Ducted fan vehicles particularly useful as VTOL aircraft
Ducted fan VTOL vehicles
Ducted propeller aircraft (V/STOL)