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Mass Analysis for the Space Station ECLSS Using the Balance Spreadsheet Method
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English
Abstract
The balance spreadsheet method is applied to mass analysis of the Environmental Control and Life Support System (ECLSS). This method is used to analyze the requirements for ECLSS carbon dioxide, latent water, crew potable water, crew hygiene water, crew hygiene waste water, crew urinal water, crew waste water, animal potable water, animal hygiene water, hydrogen, oxygen, nitrogen, and various solid wastes. The spreadsheet layout reduces the complexity of the ECLSS analysis by concisely defining the sources, sinks, and net changes in mass for each fluid. This approach also builds the data base by assigning an area for time-independent data and another one for time-dependent data so that layout modifications and formula implementations can be easily accomplished. The analysis method is illustrated by using information from the latest Space Station ECLSS Architectural Control Documents and a given Space Station assembly sequence. The analysis results are plotted and discussed.
Citation
Chu, W., "Mass Analysis for the Space Station ECLSS Using the Balance Spreadsheet Method," SAE Technical Paper 891502, 1989, https://doi.org/10.4271/891502.Also In
References
- “Architectural Control Document, Environmental Control and Life Support System,” NASA Space Station Program Office, SSP 30262, Rev. B July 1988
- Reuter J. L. “Consumables Tracking Program For Space Station Fluids - SSCONS,” Marshall Space Flight Center, Huntsville, AL, EL84 (85-87) Nov. 1987
- Reuter J. L. “Consumables Tracking Program For Space Station Fluids - TRANCONS,” Marshall Space Flight Center, Huntsville, AL, EL84 (92-87) Nov. 1987
- Chu W.H. “Balance Spreadsheet Method for Analysis of the Space Station IWS Water and RCS Propellant Requirements,” (to be published)
- “Architectural Control Document, Fluid Management Systems,” NASA Space Station Program Office, SSP 30264, Rev. 1, Section 6 Sept. 1988
- “Assembly Sequence, CR BB000468, Supporting Data,” NASA Space Station Freedom Program System Engineering and Integration Level II, SSE-E-88-R20 Sept. 1988