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2. 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 ...

3. Apollo/Skylab spacesuit - Wikipedia

   en.wikipedia.org/wiki/Apollo/Skylab_spacesuit

   The Apollo EMUs consisted of a Pressure Suit Assembly (PSA) aka "suit" and a Portable Life Support System (PLSS) that was more commonly called the "backpack". [3] The A7L was the PSA model used on the Apollo 7 through 14 missions. [4] The subsequent Apollo 15-17 lunar missions, [5] Skylab, [6] and Apollo–Soyuz used A7LB pressure suits. [7]

4. Life-support system - Wikipedia

   en.wikipedia.org/wiki/Life-support_system

   The life support system provides a nitrogen/oxygen atmosphere at sea level partial pressures. The atmosphere is then regenerated through KO2 cylinders, which absorb most of the CO2 and water produced by the crew biologically and regenerates the oxygen, the LiOH cylinders then absorb the leftover CO2.

5. Space suit - Wikipedia

   en.wikipedia.org/wiki/Space_suit

   Space suits augment pressure suits with complex system of equipment and environmental systems designed to keep the wearer comfortable, and to minimize the effort required to bend the limbs, resisting a soft pressure garment's natural tendency to stiffen against the vacuum. A self-contained oxygen supply and environmental control system is ...

6. High altitude breathing apparatus - Wikipedia

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

   There are different aviation oxygen systems and delivery methods available depending on the specific application. The oxygen source may be chemical oxygen generators, high pressure portable gaseous oxygen storage systems (gas cylinders), on-board oxygen generating systems (oxygen concentrators), or liquid oxygen systems. [4]

7. Mechanical counterpressure suit - Wikipedia

   en.wikipedia.org/wiki/Mechanical_counterpressure...

   The image shows the complete multi-layer suit and positive-pressure helmet, lacking only the backpack. (taken c. 1971) A mechanical counterpressure (MCP) suit , partial pressure suit , direct compression suit , or space activity suit ( SAS ) is an experimental spacesuit which applies stable pressure against the skin by means of skintight ...