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  2. Intermeshing-rotor helicopter - Wikipedia

    en.wikipedia.org/wiki/Intermeshing-rotor_helicopter

    Intermeshing rotored helicopters have high stability and powerful lifting capability. The latest Kaman K-MAX model is a dedicated sky-crane design used for construction work, and has been modified for trials by the USMC as an optionally-unmanned cargo transporter. Unmanned aerial vehicles with intermeshing rotors have also been flown. [2]

  3. Rotorfly R-30 - Wikipedia

    en.wikipedia.org/wiki/Rotorfly_R-30

    The Rotorfly R-30 helicopter is a coaxial helicopter with two two-blade fiberglass rotors. The control rods of the upper main rotor are located inside the shaft which reduces turbulence, It has been described as a hingeless teetering blade mount. [2] The aircraft claimed to be very quiet in general. [5]

  4. List of rotorcraft manufacturers by country - Wikipedia

    en.wikipedia.org/wiki/List_of_rotorcraft...

    Piasecki Helicopter – acquired by Boeing and became Boeing Vertol [39] Revolution Helicopter Corporation (defunct) – went out of business in November 1999; Robinson Helicopter [18] RotorWay International – produces kit helicopters [28] Sikorsky Aircraft [56] Schweizer Aircraft – acquired by Sikorsky Aircraft in 2004 and closed down in ...

  5. Helicopter rotor - Wikipedia

    en.wikipedia.org/wiki/Helicopter_rotor

    A manned multirotor helicopter that was flying in the 2010s had 18 electrically powered rotors; the single seat aircraft is powered by batteries. [36] 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]

  6. Rotorcraft - Wikipedia

    en.wikipedia.org/wiki/Rotorcraft

    A Bell 47 helicopter, an early example of a powered rotorcraft. A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotary wings that spin around a vertical mast to generate lift. The assembly of several rotor blades mounted on a single mast is referred to as a rotor.

  7. List of most-produced rotorcraft - Wikipedia

    en.wikipedia.org/wiki/List_of_most-produced...

    Most-produced Western helicopter; nicknamed "Huey". UH-1Y derivative in production. 1959–1976 Bell 206 Jetranger: 8,460: manufactured at Bell plants in United States and Canada: Also made under licence by Agusta in Italy and Commonwealth Aircraft Corporation in Australia: 1966–2010 Eurocopter AS350: 7,000 + [1] France: Airbus Helicopters ...

  8. List of rotorcraft - Wikipedia

    en.wikipedia.org/wiki/List_of_rotorcraft

    This is a list of rotorcraft, including helicopters, autogyros, rotor kites and convertiplanes. Lists of aircraft; 0–Ah; Ai–Am; An–Az; B–Be; Bf–Bo; Br–Bz ...

  9. Dissymmetry of lift - Wikipedia

    en.wikipedia.org/wiki/Dissymmetry_of_lift

    The dissymmetry of lift of one rotor disc is cancelled by the dissymmetry of lift of the other rotor disc. [citation needed] Tandem rotor helicopters such as the CH-47 Chinook still suffer from dissymmetry of lift, because the rotors are offset from one another. Tandem-rotor helicopters are installed with automatic cyclic feathering systems.

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