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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.
The difference between these two vectors is the wind acting on the aircraft. [13] Deriving winds (and temperatures from the Mach number and true airspeed) was developed simultaneously by Siebren de Haan of the KNMI and Edmund Stone of the Met Office. [14]
Any rotor system has a delay between the point in rotation where the controls introduce a change in pitch and the point where the desired change in the rotor blade's flight occurs. This difference is caused by phase lag, often confused with gyroscopic precession. A rotor is an oscillatory system that obeys the laws that govern vibration—which ...
A radio-controlled helicopter (also RC helicopter) is model aircraft which is distinct from a RC airplane because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some (such as those with collective pitch control) are more maneuverable than others.
DJI Phantom 1 drone. A multirotor [1] or multicopter is a rotorcraft with more than two lift-generating rotors.An advantage of multirotor aircraft is the simpler rotor mechanics required for flight control.
Multirotor type unmanned aerial vehicles exist in numerous configurations including duocopter, [5] tricopter, quadcopter, hexacopter and octocopter. All of them can be upgraded to coaxial configuration in order to bring more stability and flight time while allowing carrying much more payload without gaining too much weight.
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Data from MD500E Performance Specifications, The International Directory of Civil Aircraft General characteristics Crew: 2 Capacity: 3 passengers Length: 32 ft 7 in (9.93 m) Height: 8 ft 9 in (2.67 m) Empty weight: 1,591 lb (722 kg) Max takeoff weight: 3,550 lb (1,610 kg) Powerplant: 1 × Allison 250-C30 turboshaft engine, 650 shp (480 kW) Main rotor diameter: 27 ft 4 in (8.33 m) Main rotor ...
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