Multirotor

Common card · No. 454996

A multirotor or multicopter is a rotorcraft with more than two lift-generating rotors separated horizontally. An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control. Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades. They control vehicle motion by varying the relative speed of each rotor to change the thrust and torque produced by each. Some control the pitch of each rotor instead. Due to their ease of both construction and control, multirotor aircraft are frequently used in radio control aircraft and unmanned aerial vehicle (UAV) projects in which the names tricopter, quadcopter, hexacopter and octocopter are frequently used to refer to 3-, 4-, 6- and 8-rotor rotorcraft, respectively. There is also the X8 (also called octo-quad) configuration that is similar to the quadracopter design, except that it...

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