Helicopters & Quadcopters
With gadgets becoming more and more advanced these days, helicopters & quadcopters have become increasingly popular. Much like drones, helicopters & quadcopters are remote controlled, and can be used for leisure as well as scientific and research purposes. The main difference between the two is that a helicopter has one big rotor and a small tail rotor, while a quadcopter has four rotors. A helicopter’s movement is determined by its rotor blades, which are adjusted in pitch as they spin around. This allows the helicopter to take off vertically, to hover, and to go backwards and forwards. Quadcopters are controlled as its four blades are individually slowed down or sped up when maneuvered.