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Status of the International Space Station Nodes 2/3 Environmental Control and Life Support System
Technical Paper
2002-01-2490
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The International Space Station (ISS) modules Nodes 2 and 3 are progressing through the design phase into integration, test, and verification. This paper gives a status of the Nodes 2 and 3 Environmental Control and Life Support System (ECLSS) design progress since 1999 (ICES paper 1999-01-2146). The Node 2 Design Review 2 was completed in March 2001. Node 2 is currently in the hardware integration/test phase at Alenia Spazio. The ECLSS for Node 2 includes inter- and intramodule ventilation, temperature and humidity control, distribution of atmosphere samples, low pressure and recharge oxygen and nitrogen, fuel cell and wastewater, and fire detection and suppression. Changes/challenges since 1999 have included the addition of a low temperature loop coolant bypass around the Common Cabin Air Assembly condensing heat exchanger and resolution of common hardware and verification issues. The current status of hardware integration and testing is also discussed.
In addition to providing the same functions as Node 2, the ECLSS for Node 3 includes carbon dioxide removal, trace contaminant control, atmosphere monitoring, atmosphere pressure control, oxygen generation, urine and potable water processing, and potable water distribution. Scarring for future incorporation of carbon dioxide reduction and waste management is also included. Since the July 1999 Design Review 1, significant work has been accomplished to mature the Node 3 ECLSS design, particularly in the area of rack integration. Planning for Node level integrated testing is also underway and creates some significant challenges for the ECLS system. The latest design, accomplishments, and remaining challenges are discussed.
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Carrasquillo, R., Ogle, K., Harris, D., and Bertotto, D., "Status of the International Space Station Nodes 2/3 Environmental Control and Life Support System," SAE Technical Paper 2002-01-2490, 2002, https://doi.org/10.4271/2002-01-2490.Also In
References
- Carrasquillo, R. L. Bertotto, D. ECLSS Design for the International Space Station Nodes 2 & 3 SAE 1999-01-2146 29th International Conference on Environmental Systems Denver, Colorado July 1999
- Roman, M.C. Steele, J.W. Marsh, R.W. Callahan, D.M. Von Jouanne, R.G. Assessment of the Microbial Control Measures for the Temperature and Humidity Control Subsystem Condensing Heat Exchanger of the International Space Station SAE 1999-01-2109 29th International Conference on Environmental Systems Denver, Colorado July 1999
- Joiner, C. Ruff, T. Node 3 Environmental Control and Life Support System Verification Test Plan D683- 53453-1 July 2001
- Williams, D.E Lewis, J.L. Carrasquillo, R.L. Reysa, R. Gentry, G International Space Station Environmental Control and Life Support System Status: 2001-2002 SAE 2002-01-2494 33rd International Conference on Environmental Systems San Antonio, Texas July 2002