What’s this about a Drone or Quadrotor?

A quadcopter, also called a quadrotor helicopter, or quadrotor, is a multirotor helicopter that is lifted and propelled by four rotors. Quadcopters are classified as rotorcraft, as opposed to fixed-wing aircraft, because their lift is generated by a set of revolving narrow-chord airfoils and can have as many as 8, called an octocopter, or 10 rotors attached. Unlike most helicopters, quadcopters use 2 sets of identical fixed pitched propellers; 2 […]

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