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  2. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    The motor is either hidden in the fan's center hub or extends behind it. For big industrial fans, three-phase asynchronous motors are commonly used, may be placed near the fan, and drive it through a belt and pulleys. Smaller fans are often powered by shaded pole AC motors, or brushed or brushless DC motors. AC-powered fans usually use mains ...

  3. Ziehl-Abegg - Wikipedia

    en.wikipedia.org/wiki/Ziehl-Abegg

    First Design of an external rotor motor. Ziehl-Abegg SE (own notation ZIEHL-ABEGG SE, until 2013 Ziehl-Abegg AG) [2] is a German manufacturer of fans for ventilation and air conditioning applications, as well as drive technology for elevators and motors with matching control technology.

  4. Ducted fan - Wikipedia

    en.wikipedia.org/wiki/Ducted_fan

    A ducted fan may be powered by any kind of motor capable of turning the fan. Examples include piston, rotary (Wankel), and turboshaft combustion engines, as well as electric motors. The fan may be mounted directly on the powerplant output shaft, or driven remotely via an extended drive shaft and gearing.

  5. Rolls-Royce LiftSystem - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_LiftSystem

    the rear of the F135 engine (nozzle rotated down) that powers the Rolls-Royce LiftSystem. Instead of using separate lift engines, like the Yakovlev Yak-38, or rotating nozzles for engine bypass air, like the Harrier, the "LiftSystem" has a shaft-driven LiftFan, designed by Lockheed Martin and developed by Rolls-Royce, [3] and a thrust vectoring nozzle for the engine exhaust that provides lift ...

  6. Centrifugal fan - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_fan

    A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel).

  7. Turbofan - Wikipedia

    en.wikipedia.org/wiki/Turbofan

    Later in 1943, the British ground tested the Metrovick F.3 [40] turbofan, which used the Metrovick F.2 turbojet as a gas generator with the exhaust discharging into a close-coupled aft-fan module comprising a contra-rotating LP turbine system driving two co-axial contra-rotating fans.