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  2. Lego Mindstorms EV3 - Wikipedia

    en.wikipedia.org/wiki/Lego_Mindstorms_EV3

    LEGO Mindstorms EV3 (stylized: LEGO MINDSTORMS EV3) is the third and final generation of LEGO's Mindstorms robotics kit line. It is the successor to the second generation LEGO Mindstorms NXT kit. The "EV" designation refers to the "evolution" of the Mindstorms product line. "3" refers to the fact that it is the third generation of computer ...

  3. List of pusher aircraft by configuration - Wikipedia

    en.wikipedia.org/wiki/List_of_pusher_aircraft_by...

    A pusher aircraft is a type of aircraft using propellers placed behind the engines and may be classified according to engine/propeller location and drive as well as the lifting surfaces layout (conventional or 3 surface, canard, joined wing, tailless and rotorcraft), Some aircraft have a Push-pull configuration with both tractor and pusher engines.

  4. Push-pull configuration - Wikipedia

    en.wikipedia.org/wiki/Push-pull_configuration

    The earliest known examples of "push-pull" engined-layout aircraft was the Short Tandem Twin.. An early pre-World War I example of a "push-pull" aircraft was the Caproni Ca.1 of 1914 which had two wing-mounted tractor propellers and one centre-mounted pusher propeller.

  5. Propeller - Wikipedia

    en.wikipedia.org/wiki/Propeller

    A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. [1] Propellers are used to pump fluid through a pipe or duct, or to create ...

  6. Pusher configuration - Wikipedia

    en.wikipedia.org/wiki/Pusher_configuration

    1871 Planophore A Farman MF.11, showing the classic Farman configuration with engine between tail booms Buhl A-1 Autogyro, the first pusher autogyro The post-WWII Convair B-36 was unusual in its size, era, number of engines, and combining both propeller and jet propulsion, with six radial piston and four jet engines Typical of many UAVs, the General Atomics MQ-9 Reaper has a propeller at the ...

  7. Counter-rotating propellers - Wikipedia

    en.wikipedia.org/wiki/Counter-rotating_propellers

    Counter-rotating propellers (CRP) are propellers which turn in opposite directions to each other. [1] They are used on some twin- and multi- engine propeller-driven aircraft . The propellers on most conventional twin-engined aircraft turn clockwise (as viewed from behind the engine).

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