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  2. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    Some types are also referred to as a compressed air breathing apparatus (CABA) or simply breathing apparatus (BA). Unofficial names include air pack, air tank, oxygen cylinder or simply pack, terms used mostly in firefighting. If designed for use under water, it is also known as a scuba set (self-contained underwater breathing apparatus).

  3. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    High altitude breathing apparatus is a breathing apparatus which allows a person to breathe more effectively at an altitude where the partial pressure of oxygen in the ambient atmospheric air is insufficient for the task or to sustain consciousness or human life over the long or short term.

  4. Primary life support system - Wikipedia

    en.wikipedia.org/wiki/Primary_Life_Support_System

    The interior of the Apollo PLSS Diagram of the A7L PLSS and OPS, with interfaces to the astronaut and the Lunar Module cabin. The portable life support system used in the Apollo lunar landing missions used lithium hydroxide to remove the carbon dioxide from the breathing air, and circulated water in an open loop through a liquid-cooled garment, expelling the water into space, where it turned ...

  5. Compressed-air energy storage - Wikipedia

    en.wikipedia.org/wiki/Compressed-air_energy_storage

    Compressed-air energy storage can also be employed on a smaller scale, such as exploited by air cars and air-driven locomotives, and can use high-strength (e.g., carbon-fiber) air-storage tanks. In order to retain the energy stored in compressed air, this tank should be thermally isolated from the environment; otherwise, the energy stored will ...

  6. List of equipment used by Russian people's militias in Ukraine

    en.wikipedia.org/wiki/List_of_equipment_used_by...

    Man-portable air-defense system: 1500m Soviet Union: Some Ukrainian stocks of Strela-2s went missing early in the conflict, and are presumably under separatist control. [1] 9K38 Igla [1] Man-portable air-defense system: 3500m Soviet Union: Supplied by Russia (Ukrainian claim). [1] [74] [75] Captured from Ukrainian armouries (DPR claim). [76]

  7. Compressed air - Wikipedia

    en.wikipedia.org/wiki/Compressed_air

    Compressed air is an important medium for the transfer of energy in industrial processes and is used for power tools such as air hammers, drills, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer ...