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 The article Quadrotors on Wikipedia projects: (en) Quadrotor · (ca) Quadrotor · (cs) Quadrotor · (da) Quadrokopter · (de) Quadrocopter · (es) Quadrirotor · (et) Kvadrootor · (fr) Quadrirotor · (it) Quadrotor · (ja) クワッドローター · (pt) Quadrotor · (ru) Квадрокоптер · +/−
English: A quadrotor, also called a quadrotor helicopter or quadrocopter, is an aircraft that is lifted and propelled by four rotors.