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  2. Pneumatic cylinder - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_cylinder

    Pneumatic cylinder, also known as air cylinder, is a mechanical device which uses the power of compressed gas to produce a force in a reciprocating linear motion. [1] : 85. Like in a hydraulic cylinder, something forces a piston to move in the desired direction. The piston is a disc or cylinder, and the piston rod transfers the force it ...

  3. Pressure vessel - Wikipedia

    en.wikipedia.org/wiki/Pressure_vessel

    A welded steel pressure vessel constructed as a horizontal cylinder with domed ends. An access cover can be seen at one end, and a drain valve at the bottom centre. A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure . Construction methods and materials may be chosen ...

  4. Space Launch System core stage - Wikipedia

    en.wikipedia.org/wiki/Space_Launch_System_core_stage

    The Space Launch System core stage, or simply core stage, is the main stage of the American Space Launch System (SLS) rocket, built by The Boeing Company in the NASA Michoud Assembly Facility. At 65 m (212 ft) tall and 8.4 m (27.6 ft) in diameter, the core stage contains approximately 987 t (2,177,000 lb) of its liquid hydrogen and liquid ...

  5. Compressed-air vehicle - Wikipedia

    en.wikipedia.org/wiki/Compressed-air_vehicle

    The tanks must be designed to safety standards appropriate for a pressure vessel, such as ISO 11439. [7]The pressure vessels or air storage tanks that can be used in compressed-air vehicles can be made of low pressure (9 atm (130 psi)) or high pressure (more than 240 atm (3,500 psi)), and can be made of composite materials like thermoplastic and fiber reinforced thermoplastics, [6] [8] that ...

  6. Autofrettage - Wikipedia

    en.wikipedia.org/wiki/Autofrettage

    Autofrettage. Autofrettage is a work-hardening process in which a pressure vessel (thick walled) is subjected to enormous pressure, causing internal portions of the part to yield plastically, resulting in internal compressive residual stresses once the pressure is released. The goal of autofrettage is to increase the pressure-carrying capacity ...

  7. Diving cylinder - Wikipedia

    en.wikipedia.org/wiki/Diving_cylinder

    The pressure vessel is a seamless cylinder normally made of cold-extruded aluminium or forged steel. Filament wound composite cylinders are used in fire fighting breathing apparatus and oxygen first aid equipment because of their low weight, but are rarely used for diving, due to their high positive buoyancy.

  8. Composite overwrapped pressure vessel - Wikipedia

    en.wikipedia.org/wiki/Composite_overwrapped...

    A COPV inside a sounding rocket. A composite overwrapped pressure vessel (COPV) is a vessel consisting of a thin, non-structural liner wrapped with a structural fiber composite, designed to hold a fluid under pressure. The liner provides a barrier between the fluid and the composite, preventing leaks (which can occur through matrix microcracks ...

  9. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle in two crankshaft revolutions.