A remote controlled airplanes or RC Plane is controlled remotely by a hand-made transmitter and a receiver within the aircraft. The main use of the receiver is to adjust controls of the corresponding servos (a small device that has a three phase DC motor, a gear, an IC or Integrated Circuit, a potentiometer and a shaft bearing) that run the control surfaces depend on the position of joysticks of the transmitter. Flying remote control aircraft has become a hobby of the worldwide people. There is a wide variety of models and styles are available for RC planes. Experiments and researches are made nowadays for using more efficient motors, low cost maintenance more fuel efficient internal combustion or jet engines, lighter and more effective batteries and more powerful radio systems. The most important thing is that scientific, military, government and non government organizations are trying to use remote control airplanes for experiments, defense system, weather forecasting and even use these RC planes as spy planes or drones.
