Drone aircraft Automatic control 81 Airplanes 40 Control systems 38 Piloting 20 Design and construction 19 Planning 18 Vehicles, Remotely piloted 18 Guidance systems (Flight) 17 Embedded computer systems 13 Control system 12 Radio control 11 Helicopters 8 PID controllers 8 Image processing 6 Mathematical models 6 Mathematics 6 Micro air vehicles 6 Aerodynamics 5 Navigation (Aeronautics) 4 Robots 4 Rotors Design and construction 4 Cruise missiles 3 Vehicles, remotely piloted 3 Accelerometers 2 Airways 2 Arduino 2 Arduino (Programmable controller) 2 Automatic pilot (Airplanes) 2 Autonomous vehicles 2