Browsing by Author "Moriyama, Eriko"
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Item New ECLSS Simulation Software and Its Demonstration by Manned Mars Missions(45th International Conference on Environmental Systems, 2015-07-12) Moriyama, Eriko; Moroshima, Reiji; Ohura, Satoshi; Hirosaki, Tomofumi; Yamashita, Teruhiro; Iino, Shota; Miyajima, Hiroyuki; Ishikawa, Yoshio; Nakane, Masakatsu; Terao, TakumaThe role of the Environmental Control and Life Support System (ECLSS) is to create a sustainable environment for humans by utilizing plants and physicochemical systems. For future human space missions, more research and practical experiments are desired. Our team has been developing an ECLSS simulator, called SImulator for Closed Life and Ecology (SICLE), for use as a tool in satisfying a wide range of research in ecology and resource recycling. The most significant feature of this simulator is that it can construct environment models by simple operations, applied to both closed and open systems. We ran three simulations on two situations to investigate the behavior of the simulator and to obtain numerical data. The first two models were derived from our Mars exploration operations research at Mars Desert Research Station (MDRS) in the Utah desert. The MDRS model refers to water consumption in a two-week habitation by 6 crew members of Crew 137, Team NIPPON, in a habitat module of MDRS with open air and water systems. SICLE simulation results for the MDRS model show that water flow corresponds to actual measurement values, as well as indicating complete substance exchanges among factors such as air, water and human activities for a hypothetical closed-system model of MDRS. The other model was Inspiration Mars Mission, a partially closed ECLSS with 2 crew members for 501 days, designed by Team Kanau, winner of International Inspiration Mars Student Design Competition. The designed ECLSS model consisted of recycling systems and supplemental storage which compensated for recycling loss as the mission progressed. In the simulation, the tank size was effectively defined by reading possible maximum substance amounts in each tank, and failure event behavior was investigated. We believe that improving SICLE, as it can be applied to a variety of resource recycling and circulation models, contributes to accelerate research in this field.Item Simulation Study of Environmental Control and Life Support System Design for Deep Space Exploration(49th International Conference on Environmental Systems, 2019-07-07) Moroshima, Reiji; Moriyama, Eriko; Terao, Takuma; Taguchi, Ayako; Hirosaki, Tomofumi; Eshima, Samuel; Miyajima, HiroyukiWith 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.