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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.
Four rotors. Also referred to as the quadcopter or quadrotor. Usually two rotors turn clockwise and two counter-clockwise. More than four rotors. Referred to generally as multirotors, or sometimes individually as hexacopters and octocopter, these configurations typically have matched sets of rotors turning in opposite directions.
The Netra is a lightweight UAV, manufactured by carbon fiber composites, that uses quadcopters to provide lift and control giving a VTOL capability. It has no moving parts other than the rotors, motors and transmissions, and hence it requires very low maintenance.
On 29 September 1907, the Gyroplane No.I was flown for the first time, albeit to an elevation of only 0.6 metres (2.0 ft). [1] It was not a free flight, as four men were used to steady the structure.
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The DRDO Bharat is a light surveillance quadcopter, unmanned aerial vehicle developed by the Defence Research and Development Organization for the Indian Army. [1]The drone has been created by the Chandigarh-based laboratory of the DRDO for carrying out surveillance in high-altitude areas and mountainous terrain along India's lines of actual control with Pakistan and China.
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Elbit Systems Hermes-450 taking off Northrop Grumman Bat carrying EO/IR and SAR sensors, laser rangefinders, laser designators, infrared cameras A DJI Phantom quadcopter UAV for commercial and recreational aerial photography A General Atomics MQ-9 Reaper, a hunter-killer surveillance UAV Although most large military UAVs are fixed-wing aircraft, rotorcraft designs (i.e., RUAVs) such as this MQ ...