Vacuum Resource Provision for Space Station Freedom 891453

The use of vacuum resources is integral to a number of proposed concepts for gas disposal from Space Station Freedom. These include both direct overboard venting and onboard collection and storage of waste gases. A methodology is presented for determining flowrates through proposed vacuum lines. The flowrates through overboard vents are used to calculate number column densities, which are compared with current Freedom program requirements. The results are combined with discussions about the relative merits of some proposed and alternate concepts for providing vacuum resources.


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