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Mass Balance Sensitivity for Space Station Freedom: Closed Loop Life Support
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English
Abstract
Water reclamation will be the basis of the closed loop Water Recovery Management (WRM) system on Space Station Freedom (SSF). The life support loop is considered “closed” in the sense that water will not be resupplied to SSF, only food with sufficient water percentage to make-up for inefficiencies in recovery, will be resupplied every 90 days. Oxygen will be generated from water. Mass balance for water, atmosphere and solids pertaining to Environmental Control and Life Support Systems (ECLSS) on SSF has been modeled on a Lotus 123 spreadsheet. Pictoral and numerical representations of the mass balance is shown in Figures 1, 2 and 3 for Manned Tended Configuration (MTC), Permanently Manned Configuration (PMC) and Eight Man Capability Configuration (EMCC), respectively. Parameters are varied to analyze the sensitivity of the mass balance to different hardware combinations, crew configurations and metabolic rates. This program has been used by Boeing ECLSS design to estimate capacity, tank sizing and system integration of ECLSS hardware.
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Citation
Miernik, J. and Baer-Peckham, D., "Mass Balance Sensitivity for Space Station Freedom: Closed Loop Life Support," SAE Technical Paper 911417, 1991, https://doi.org/10.4271/911417.Also In
References
- Humphries, W. R. Reuter J. L. Schunk R. G. “Space Station Environmental Control and Life Support System Distribution and Loop Closure Studies” SAE # 860942 July 1986
- Noble, L. D. Schubert F. H. Pudoka R. J. Miernik J. H. “Phase Change Water Recovery for the Space Station Freedom and Future Planetary Exploration Missions” SAE # 901294 July 1990
- Woodcock, G. L. Space Stations and Platforms Orbit Book Co. Malabar, Fl. 1986
- NASA MSFC, SSP 30262 “Environmental Control and Life Support Systems Architectural Control Document” Oct. 1990
- Reuter, J. L. “Determination of Space Station Crew Water Requirements Based on Skylab Data” Memorandum for Record, NASA MSFC Jan. 1988
- JCS/Grumman response to ECLSS Working Group Action Item #234 June 1989
- Miernik, J. H. “Mass Balance Sensitivity Analysis” Memo #2-H8RG-JHM273/90RR Nov. 1990 Boeing SSF PDR submittal and RID response
- Farrel, T. NASA/JSC Mission Support Directorate response to ECLSS Working Group Action Item #406 Dec. 1989
- Sauer, D. NASA/JSC response to ECLSS Working Group Action Item #700 Apr. 1991