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A quadcopter, also called quadrocopter, or quadrotor [1] is a type of helicopter or multicopter that has four rotors. [ 2 ] Although quadrotor helicopters and convertiplanes have long been flown experimentally, the configuration remained a curiosity until the arrival of the modern unmanned aerial vehicle or drone.
In November 2012, Traxxas launched its first aircraft products, the ready-to-fly DR-1 Helicopter and QR-1 Quadcopter. [ 5 ] As of April 2023, Traxxas offers a large variety of different kinds of radio-controlled cars, which can be classified into the following types and their respective models:
American Eurocopter – founded as Vought Helicopter Inc, now a wholly owned subsidiary of Eurocopter; American Helicopter [10] Aviodyne U.S.A. Bell/Agusta Aerospace Company; Bell Helicopter [44] Bendix Helicopter Company (defunct) [10] Bensen Aircraft Company (defunct) [10] Boeing Rotorcraft Systems (formerly Boeing Helicopters & Boeing-Vertol ...
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; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.
Example aerial video of Snowdonia filmed with a DJI Phantom 2 Vision+ quadcopter Several segments of industry are open to commercial use including drone journalism , [ 42 ] hurricane hunting, 3-D landscape mapping, nature protection, [ 43 ] farming, search and rescue, [ 44 ] aircraft inspection, tornado chasing, and lava lake exploration.
The Helicopters. "The Epic of Flight". Chicago: Time-Life Books, 1982. ISBN 0-8094-3350-8. The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. Lacaze, Henri (2016). Les avions Louis Breguet Paris [The Aircraft of Louis Breguet, Paris] (in French). Vol. 2: le règne du monoplan. Le Vigen, France.
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