Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"ISRU"”.
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Laboratory Characterization of Mars In-Situ Resource Utilization (ISRU) using the Mars Oxygen ISRU Experiment (MOXIE) FlatSat Testbed
… Mars in-situ resource utilization (ISRU) system. The research presented in this thesis involves a series of experiments conducted on the FlatSat testbed to inform design and operation of a next-generation Martian ISRU system. Specifically, this thesis discusses the capabilities of …
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Plasma-based CO₂ Conversion for Mars ISRU
… process for Mars In-Situ Resource Utilization (ISRU). The abundant CO₂ in the Martian atmosphere can be converted into breathable oxygen and fuel for astronauts, enabling safer and more independent Mars missions while reducing launch costs. Nonthermal plasma technologies leverage electron …
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Multi-Objective System Optimization of a Mars Atmospheric ISRU Plant
… is demonstrating In-Situ Resource Utilization (ISRU) on the surface of another planetary body. MOXIE produces oxygen from atmospheric CO2 on Mars. It was developed for NASA’s Mars 2020 Rover and produces oxygen with greater than 99.6% purity through solid oxide electrolysis. MOXIE is a small …
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Towards the sustainable industrial development of Mars : comparing novel ISRU / ISM architectures using lifetime embodied energy
… as a result of reusable rockets, adoption of ISRU and ISM, and a new emphasis on developing permanent infrastructure on other worlds. This thesis investigates the case for adopting embodied energy as a novel and more capable metric for the value and cost of in-space activities. Energy is the …
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Adaptive Oxygen Production of the Mars Oxygen ISRU Experiment (MOXIE) though Feedback Control of Pressure Sensor 4
The Mars Oxygen ISRU Experiment (MOXIE) has demonstrated the ability of a system to produce Oxygen on the surface of Mars by means of Solid Oxide Electrolysis from atmospheric Carbon Dioxide. This work builds on the mission goals of MOXIE, which runs only intermittently and with much manual …
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Molten Regolith Electrolysis reactor modeling and optimization of in-situ resource utilization systems
In-Situ Resource Utilization (ISRU), the practice of leveraging space resources to support space exploration, has long been considered as a possible avenue for reducing the mass and cost of exploration architectures. In particular, producing oxygen from lunar regolith holds great promise for …
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Towards Earth independence - tradespace exploration of long-duration crewed Mars surface system architectures
… Support (ECLS), In-Situ Resource Utilization (ISRU), and Supportability analysis framework - and applies it to three different Mars mission scenarios to analyze the impacts of different system architectures on the costs of deploying and sustaining a continuous human presence on the surface of …
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Development of new processes for ISRU (In Situ Resource Utilization) and ISFR (In Situ Fabrication and Repair) applications on Moon and Mars
… missions, in the framework of the so-called ISRU (In-Situ Resource Utilization) and ISFR (In-Situ Fabrication and Repair) concepts. Specifically, the approach to ISRU will focus on technologies necessary to extract consumables for human life-support system replenishment while ISFR is aimed to …
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System modeling, design, and control of the Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE) and implications for atmospheric ISRU processing plants
… feasible. In-Situ Resource Utilization (ISRU), the science of using space resources to support exploration missions, unlocks potential destinations by significantly reducing the mass to be launched from Earth. Mars is considered a promising location with significant indigenous resources. …
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Technology selection and architecture optimization of in-situ resource utilization systems
… design of a lunar in-situ resource utilization (ISRU) oxygen plant. Four optimization methods using genetic algorithms are compared on both a quadratic-based test function and the ISRU plant design with the goal of balancing the resources spent on exploiting individual architectures and exploring …
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In-Situ Resource Utilization of Pectin and Bosch Carbon for Energy Storage
… a wider system of In-Situ Resource Utilization (ISRU) has been implemented in both sodium-ion batteries with other resources expected to be available on missions to the moon and Mars. ISRU soft carbon was compared with commercial hard carbon in batteries and activated biomass carbon when applied …
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Generalized multi-commodity network flows : case studies in space logistics and complex infrastructure systems
… propulsion is used along with oxygen-rich ISRU. We also present one possible scenario with two "gateway" resource depots at GTO and DTO with orbital transfer vehicles (OTVs) running in the cislunar and Martian systems. Then we solve variant problems that have different settings to see the …
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From Lunar Modules to In-Situ Habs: Conceptualization & Considerations of a Developing Lunar South Pole Base
… and theorizes how in-situ resource utilization (ISRU) technologies could be used to construct more robust and protective habitation that integrates with existing prefabricated modules for supporting large-scale surface operations. This ties into an exploratory conceptualization of how an example …
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Dynamic network modeling for spaceflight logistics with time-expanded networks
… those between in-situ resource utilization (ISRU) and propulsion technologies as well as orbit and depot location selection over time. The numerical results show that using specific combinations of propulsion technologies, ISRU, and other space infrastructure elements effectively, we can …
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Cryogenic deformation of two comet and asteroid analogs under varying conditions of saturation
… bodies and in situ resource utilization (ISRU) activities have been identified as some of the most important scientific endeavors of the coming decade. With the failure of Rosetta's Philae lander to penetrate the surface of comet 67P and obtain a sample due to the high compressive strength …
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Investigation Of Material Properties Of Sintered Black Point-1 Lunar Regolith Simulant
… the need for In Situ Resource Utilization (ISRU). The aim of this research was to investigate the possible usage of in situ resources for lunar construction and other economic development. The study evaluated different methods of material preparation using lunar regolith simulant for …
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Composition sensors calibration and characterization and warmup analysis for the Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE)
… the first time, In-Situ Resource Utilization (ISRU) on another planet by extracting O₂ from CO₂ in the Martian atmosphere using solid oxide electrolysis (SOE). In order to inform and control its system, MOXIE has a set of temperature, pressure, and composition sensors that measure its internal …
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Aurora: Lunar Surface Power Plant
… approach uses in-situ resource utilization (ISRU) of lunar regolith to minimize mass transported from Earth while meeting structural, thermal, and safety requirements for long-duration lunar missions.
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Processes and Materials for Space Exploration and Colonization
… The paradigm of In Situ Resource Utilization (ISRU) is a long-time established concept to minimize such costs. In this regard, instead of bringing the required materials from Earth, it is worth to study how to maximize the use of in-situ available resources such as regolith, Mars soil, for …
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Cost Optimized Logistics for Commercial Operations in Low Earth Orbit and Cislunar Space
… a commercial lunar in-situ resource utilization (ISRU) liquid oxygen generation system. These mission architectures were modelled and simulated in SpaceNet which first analyzed for feasibility and then were processed by COST-O. This data was used to make financial forecasts and were analyzed for …
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