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  2. Hoist (device) - Wikipedia

    en.wikipedia.org/wiki/Hoist_(device)

    A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. The most familiar form is an elevator, the car of which is raised and lowered by a hoist mechanism.

  3. Rotor wing - Wikipedia

    en.wikipedia.org/wiki/Rotor_wing

    Rotor wing. A rotor wing is a lifting rotor or wing which spins to provide aerodynamic lift. In general, a rotor may spin about an axis which is aligned substantially either vertically or side-to-side (spanwise). All three classes have been studied for use as lifting rotors and several variations have been flown on full-size aircraft, although ...

  4. Rotorcraft - Wikipedia

    en.wikipedia.org/wiki/Rotorcraft

    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. The International Civil Aviation Organization (ICAO) defines a rotorcraft as "supported ...

  5. Straight-line mechanism - Wikipedia

    en.wikipedia.org/wiki/Straight-line_mechanism

    A straight-line mechanism is a mechanism that converts any type of rotary or angular motion to perfect or near-perfect straight-line motion, or vice versa. Straight-line motion is linear motion of definite length or "stroke", every forward stroke being followed by a return stroke, giving reciprocating motion. The first such mechanism, patented ...

  6. Detachable chairlift - Wikipedia

    en.wikipedia.org/wiki/Detachable_chairlift

    This type of grip is a "Doppelmayr Spring grip", and can be seen on Doppelmayr detachable quads built between 1985 and 1995. A detachable chairlift or high-speed chairlift is a type of passenger aerial lift, which, like a fixed-grip chairlift, consists of numerous chairs attached to a constantly moving wire rope (called a haul rope) that is ...

  7. Military transport aircraft - Wikipedia

    en.wikipedia.org/wiki/Military_transport_aircraft

    Military transport aircraft. A military transport aircraft, military cargo aircraft or airlifter is a military-owned transport aircraft used to support military operations by airlifting troops and military equipment. Transport aircraft are crucial to maintaining supply lines to forward bases that are difficult to reach by ground or waterborne ...