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  2. Dahlander pole changing motor - Wikipedia

    en.wikipedia.org/wiki/Dahlander_pole_changing_motor

    The poles can be varied at a ratio of 1:2 and thus the speed can be varied at 2:1. [7] [8] [9] Normally, the electrical configuration of windings is varied from a delta connection (Δ) to a double star connection (YY) configuration in order to change the speed of the motor for constant torque applications, such as the hoists in cranes.

  3. Drum motor - Wikipedia

    en.wikipedia.org/wiki/Drum_motor

    Drum Motor with Planetary Gear Drum Motor With Helical Spur Gear. The drum motor concept was first recorded in 1928, but it was not used until the early 1950s, when it was first produced specifically for conveyor belt applications. The goal was to produce a compact, totally enclosed single component drive unit with high efficiency and lower ...

  4. AeroVironment RQ-20 Puma - Wikipedia

    en.wikipedia.org/wiki/AeroVironment_RQ-20_Puma

    RQ-20A Puma Military designation for the Puma All Environment variant. Enhanced Puma Upgrade of the RQ-20A Puma AE with more powerful propulsion system and new batteries that increase endurance by 75 percent to 3.5 hours, auxiliary payload bay to integrate payloads while keeping the video camera, precision navigation system with secondary GPS, and a redesigned durable fuselage with reinforced ...

  5. Backpack helicopter - Wikipedia

    en.wikipedia.org/wiki/Backpack_helicopter

    A backpack helicopter / helipack is a helicopter motor and rotor and controls assembly that can be strapped to a person's back, so they can walk about on the ground wearing it, and can use it to fly. It uses a harness like a parachute harness and should have a strap between the legs (so the pilot does not fall out of the harness during flight).

  6. Programmable Universal Machine for Assembly - Wikipedia

    en.wikipedia.org/wiki/Programmable_Universal...

    Unimate 500 PUMA (1983), control unit and computer terminal at Deutsches Museum, Munich PUMA arm at NASA. The PUMA (Programmable Universal Machine for Assembly, or Programmable Universal Manipulation Arm) is an industrial robotic arm developed by Victor Scheinman at pioneering robot company Unimation.

  7. Turbomeca Makila - Wikipedia

    en.wikipedia.org/wiki/Turbomeca_Makila

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  8. Cam timer - Wikipedia

    en.wikipedia.org/wiki/Cam_timer

    An electric motor drives a shaft arranged with a series of cams or a drum studded with pegs along its surface. Associated with each cam is one or more switches . The motor rotates at a fixed speed, and the camshaft is driven through a speed-reducing gearbox at a convenient slow speed.

  9. Internal fan-cooled electric motor - Wikipedia

    en.wikipedia.org/wiki/Internal_fan-cooled...

    An internal fan-cooled electric motor (colloquially, fan-cooled motor) is a self cooling electric motor.Fan cooled motors feature an axial fan attached to the rotor of the motor (usually on the opposite end as the output shaft) that spins with the motor, providing increased airflow to the motor's internal and external parts which aids in cooling.

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