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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; control of vehicle motion is achieved by varying ...
The Robinson R22 has a "teetering" cyclic design connected to a central column located between the two seats. Helicopters with fly-by-wire systems allow a cyclic-style controller to be mounted to the side of the pilot seat. The cyclic is used to control the main rotor in order to change the helicopter's direction of movement. In a hover, the ...
Future Vertical Lift (FVL) is a plan [1] to develop a family of military helicopters for the United States Armed Forces.Five different sizes of aircraft are to be developed, sharing common hardware such as sensors, avionics, engines, and countermeasures. [2]
The MRH-90 was one of many helicopters types operated by the Australian Defence Force during this period, including various types of multi-role helicopters. The MRH-90 supplemented and eventually replaced the then in-service Sikorsky Black Hawk and Westland Sea King helicopters in the early 2000s. The MHR-90 was the primary medium helicopter ...
The first aerobatic manned drone, as this type of electrically powered multi-rotor helicopter is known, had 12 rotors and could carry 1-2 people. [ 37 ] Manned drones or eVTOL as they are called typically multirotor designs powered by batteries gained increasing popularity and designs in the 2020s.
During the initial development of the A160 airframe and rotor system in 1999 to 2000, Frontier Systems simultaneously designed the Maverick vertical take-off and landing (VTOL) UAV as a testbed for avionics, software and flight control systems. The Maverick was a highly modified version of the Robinson R22 light civilian helicopter. By using a ...
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The Hanson Elastic Articulated (EA) bearingless rotor grew out of work done in the early 1960s at Lockheed California by Thomas F. Hanson, who had previously worked at Convertawings on the quadrotor's rotor design and control system. [15] [16] The Gloster Crop Sprayer project of 1960 was an early example of a quadcopter drone. To be powered by ...