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  2. Concentric reducer - Wikipedia

    en.wikipedia.org/wiki/Concentric_reducer

    A copper concentric reducer. A concentric reducer is used to join pipe sections or tube sections on the same axis. [1] The concentric reducer is cone-shaped, and is used when there is a shift in diameter between pipes. [1] For example, when a 1" pipe transitions into a 3/4" pipe and the top or bottom of the pipe doesn't need to remain level. [2]

  3. Eccentric reducer - Wikipedia

    en.wikipedia.org/wiki/Eccentric_reducer

    They are used where the diameter of the pipe on the upstream side of the fitting (i.e. where flow is coming from) is larger than the downstream side, and where there is a danger that vapour may accumulate. [1] Unlike a concentric reducer, which resembles a cone, eccentric reducers have an edge that is parallel to the connecting pipe, referred ...

  4. Bell X-2 - Wikipedia

    en.wikipedia.org/wiki/Bell_X-2

    The Bell X-2 (nicknamed "Starbuster" [1]) was an X-plane research aircraft built to investigate flight characteristics in the Mach 2–3 range. The X-2 was a rocket-powered, swept-wing research aircraft developed jointly in 1945 by Bell Aircraft Corporation, the United States Army Air Forces and the National Advisory Committee for Aeronautics (NACA) to explore aerodynamic problems of ...

  5. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    A reducer reduces the pipe size from a larger to a smaller bore (inner diameter). Alternatively, reducer may refer to any fitting which causes a change in pipe diameter. [15] This change may be intended to meet hydraulic flow requirements of the system or adapt to existing piping of a different size. The reduction length is usually equal to the ...

  6. Bearing reducer - Wikipedia

    en.wikipedia.org/wiki/Bearing_reducer

    This transmission system allows the utilization of the bearing reducer in several technics, such as robotics and automation, machine tools, measuring equipment, navigation systems, the aircraft industry, the military and medicine field, the woodworking field, the printers branch, the machines for the textile industry and glass treatment, and ...

  7. List of Soviet aircraft in World War II - Wikipedia

    en.wikipedia.org/wiki/List_of_soviet_aircraft_in...

    2 1 Petlyakov Pe-3: Inline V-12 × 2: Klimov 330 mph 1336 mi 29,900 ft 1 3 1 × 20mm Polikarpov I-15 biplane: Radial 9-cyl: Shvetsov 228 mph 320 mi 32,200 ft 4 Polikarpov I-153 biplane: Radial 9-cyl: Shvetsov 185 mph 290 mi 35,100 ft 4 Polikarpov I-16: Radial 9-cyl: Shvetsov 288 mph 497 mi 31,800 ft 2 2 × 20mm Polikarpov I-185: Radial 18-cyl ...