Simulation Study of Environmental Control and Life Support System Design for Deep Space Exploration



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49th International Conference on Environmental Systems


With Japan participating in the Lunar Orbital Platform-Gateway (LOP-G) program, expectations to use the LOP-G as an advanced base to open the door to deep space will increase and further destinations for human spaceflight will likely to be planned. This derives the need to design an environmental control and life support system (ECLSS) that can withstand a long duration mission without resupplies. In particular, an atmosphere revitalization (AR) subsystem and a water recovery and management (WRM) subsystem require highly reliable architectures with higher regeneration rates than ones currently operating in the International Space Station (ISS), as well as an environmental monitoring and control subsystem demands advanced technologies with great efficiency. We have worked for years to develop SICLE (SImulator for Closed Life and Ecology), a software to design and simulate ECLSS models, based on the knowledge of ECLSS simulations at the Closed Ecology Experiment Facilities (CEEF) in Japan. In addition, our recent research and development of ECLSS assemblies including carbon dioxide removal, oxygen generator and water recovery and management with JAXA has contributed largely to the development of SICLE. This paper discusses the results of the ECLSS simulation analyses using SICLE especially on water/air revitalization, temperature, humidity, and CO2 concentration control of the space habitat currently designed for deep space exploration.


Reiji Moroshima, Space Systems Development Corporation (SSD), Japan
Eriko Moriyama, Space Systems Development Corporation (SSD), Japan
Takuma Terao, Space Systems Development Corporation (SSD), Japan
Ayako Taguchi, Space Systems Development Corporation (SSD), Japan
Tomofumi Hirosaki, Space Systems Development Corporation (SSD), Japan
Samuel Eshima, University of Colorado Boulder (CU Boulder), USA
Hiroyuki Miyajima, International University of Health and Welfare (IUHW), Narita Campus, Japan
ICES301: Advanced Life Support Systems Control
The 49th International Conference on Environmental Systems was held in Boston, Massachusetts, USA on 07 July 2019 through 11 July 2019.


ECLSS, Life Support System, Deep Space Exploration, SICLE, Atmosphere Revitalization, Water Recovery and Management