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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. Ford Duratorq engine - Wikipedia

    en.wikipedia.org/wiki/Ford_Duratorq_engine

    Codenamed Puma during development, these Ford 2.0 L, 2.2 L, and 2.4 L engines are called ZSD. They are produced at the company's Dagenham plant in east London. Note: the 2.5 and 3.0L "W" engines in above table are NOT Puma engines.

  7. 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.

  8. Unimation - Wikipedia

    en.wikipedia.org/wiki/Unimation

    The PUMA (Programmable Universal Machine for Assembly, or Programmable Universal Manipulation Arm) was developed by Victor Scheinman at Unimation in 1978. Initially developed for General Motors , the PUMA was based on the earlier Vicarm design Scheinman invented while at Stanford University .

  9. Personal Urban Mobility and Accessibility - Wikipedia

    en.wikipedia.org/wiki/Personal_Urban_Mobility...

    The limited top speed would prevent the use of the vehicle on highways and other roadways with a speed limit in excess of 35 miles per hour (56 km/h). [1] Initial uses might include college campuses and other locations where traditional passenger cars and trucks are limited.

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