Filtering
Filtering is the process of removing unwanted particles or substances from a fluid or gas. In the context of space and astronautical engineering, filtering is a crucial process in maintaining the quality of air and water in spacecraft. The air and water systems in spacecraft are closed-loop systems, which means that the same air and water are continuously recycled. Filtering is necessary to remove any contaminants that may accumulate in the system over time. In addition, filtering is also used in propulsion systems to remove any debris or particles that may damage the engine. The effectiveness of filtering is measured by its ability to remove particles of a certain size, known as the filter's micron rating.
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