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Record Details

Record 76 of 16323
Determination of On-Orbit Cabin Air Loss from the International Space Station (ISS)
Author and Affiliation:
Williams, David E.(NASA Johnson Space Center, Houston, TX, United States)
Leonard, Daniel J.(Boeing Co., United States)
Smith, Patrick J.(Boeing Co., United States)
Abstract: The International Space Station (ISS) loses cabin atmosphere mass at some rate. Due to oxygen partial pressures fluctuations from metabolic usage, the total pressure is not a good data source for tracking total pressure loss. Using the nitrogen partial pressure is a good data source to determine the total on-orbit cabin atmosphere loss from the ISS, due to no nitrogen addition or losses. There are several important reasons to know the daily average cabin air loss of the ISS including logistics planning for nitrogen and oxygen. The total average daily cabin atmosphere loss was estimated from January 14 to April 9 of 2003. The total average daily cabin atmosphere loss includes structural leakages, Vozdukh losses, Carbon Dioxide Removal Assembly (CDRA) losses, and other component losses. The total average daily cabin atmosphere loss does not include mass lost during Extra-Vehicular Activities (EVAs), Progress dockings, Space Shuttle dockings, calibrations, or other specific one-time events.
Publication Date: Jan 01, 2004
Document ID:
20050217416
(Acquired Oct 12, 2005)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number: SAE-2004-01 -2597
Document Type: Preprint
Meeting Information: International Conference for Environmental Systems; 19-22 Jul. 2003; Colorado Springs, CO; United States
Meeting Sponsor: Society of Automotive Engineers, Inc.; United States
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: INTERNATIONAL SPACE STATION; SPACECRAFT CABIN ATMOSPHERES; CARBON DIOXIDE REMOVAL; EXTRAVEHICULAR ACTIVITY; NITROGEN; OXYGEN; PARTIAL PRESSURE
Availability Source: Other Sources
Availability Notes: Abstract Only
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