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  2. Helicopter rotor - Wikipedia

    en.wikipedia.org/wiki/Helicopter_rotor

    This three-engined helicopter has a single large main rotor and smaller tail rotor. On a helicopter, the main rotor or rotor system is the combination of several rotary wings (rotor blades) with a control system, that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerodynamic ...

  3. Disk loading - Wikipedia

    en.wikipedia.org/wiki/Disk_loading

    When a helicopter is being maneuvered, its disk loading changes. The higher the loading, the more power needed to maintain rotor speed. [3] A low disk loading is a direct indicator of high lift thrust efficiency. [4] Increasing the weight of a helicopter increases disk loading. For a given weight, a helicopter with shorter rotors will have ...

  4. Swashplate (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Swashplate_(aeronautics)

    In aeronautics, a swashplate is a mechanical device that translates input via the helicopter flight controls into motion of the main rotor blades. Because the main rotor blades are spinning, the swashplate is used to transmit three of the pilot's commands from the non-rotating fuselage to the rotating rotor hub and mainblades.

  5. Helicopter flight controls - Wikipedia

    en.wikipedia.org/wiki/Helicopter_flight_controls

    Changes to the aircraft flight control system transmit mechanically to the rotor, producing aerodynamic effects on the rotor blades that make the helicopter move in a desired way. To tilt forward and back (pitch) or sideways (roll) requires that the controls alter the angle of attack of the main rotor blades cyclically during rotation, creating ...

  6. Coning (aerodynamics) - Wikipedia

    en.wikipedia.org/wiki/Coning_(aerodynamics)

    Coning is a phenomenon which affects helicopter rotor discs, where the blades describe a cone shape as they rotate. For a helicopter on the ground, as the blades rotate, they describe a horizontal disc due to centrifugal force. However, as the helicopter generates lift, the blades are pulled upwards into a cone shape. [1] [2] [3]

  7. PZL SW-4 Puszczyk - Wikipedia

    en.wikipedia.org/wiki/PZL_SW-4_Puszczyk

    The design of the SW-4 helicopter originates from the 1960s, during which period it was decided against proceeding to production with the SW-4 due to demand for military helicopters from various nations within the Warsaw Pact. [3] Around 1981, development work at PZL-Swidnik was started on a new four/five place light utility helicopter. [4]

  8. EDM Aerotec CoAX 2D/2R - Wikipedia

    en.wikipedia.org/wiki/EDM_Aerotec_CoAX_2D/2R

    The CoAX 2D/2R was originally known as the FLIP 2 (Fly In Perfection) and is a derivative of the FLIP 1, a conventional helicopter with a main and tail rotor.[1]The CoAX 2D/2R was designed to comply with the European Class 6 microlight helicopter rules, including the category's maximum takeoff weight of 450 kg (992 lb).

  9. Sikorsky S-61 - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_S-61

    One modification for the S-61 is the Carson Composite Main Rotor Blade. These blades replace the original Sikorsky metal blades, which are prone to fatigue, and permit a modified aircraft to carry an additional 2,000 lb (910 kg) load, fly 15 kn (28 km/h) faster and increase range 61 nmi (113 km).