Quadcopter

A quadcopter, also called quadrocopter, or quadrotor is a type of helicopter or multicopter that has four rotors. Quadcopters generally have two rotors spinning clockwise (CW) and two counterclockwise (CCW). Flight control is provided by independent variation of the speed and hence lift and torque of each rotor. Pitch and roll are controlled by varying the net center of thrust, with yaw controlled by varying the net torque. Made with Creo Parametric