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 19 of 19 for “"Mars mission"”.
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Abort scenario feasibility for the manned Mars mission
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Nerva-derived reactor coolant channel model for Mars mission applications
NERVA-Derived Reactor Coolant Channel Model for Mars Mission Applications presents the results of a computational fluid dynamics (CFD) study of a 1.3m NERVA-Derived Reactor (NDR) coolant channel; The CFD code FLOW-3D was used to model the flow of gaseous hydrogen through the core of a NDR. Hydrogen …
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Supersonic Retro-Propulsion Computational Fluid Dynamics Analysis Applied to Future Mars Mission
… being considered by NASA for use in future Mars missions. This new form of Entry Descent Landing has the potential to help increase the allowable payload mass currently constraining many science instruments and operations. Computational Fluid Dynamics was used to show the feasibility of …
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Evaluation of Neuromuscular Electrical Stimulation as a Bone Loss Countermeasure on a Long Duration Mars Mission
… reduce the risk of fracture on a long duration mission to Mars (>6 months) and additional exercise cannot be added as exercise is time consuming, incurs high caloric demands, and future spacecraft will be unable to accommodate the current machines. Therefore, to minimize the risk of …
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Towards Earth independence - tradespace exploration of long-duration crewed Mars surface system architectures
… grown around the prospect of sending humans to Mars for the exploration and eventual settlement of that planet. With the signing of the 2010 NASA Authorization Act, this goal became the official policy of the United States and consequently, has become the long-term objective of NASA's human …
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An Optimization Method for the Preliminary Design of Interplanetary Aerobraking Missions (Spacecraft, Orbit Mechanics)
… payload mass fraction for various types of missions. A procedure is devised which determines the optimal combination of aerobrake shielding area and initial orbit period to maximize the spacecraft mass in the final orbit. Two computer codes are constructed and the results from each are …
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Investigating the Role of Mission Architecture in Crew Socioemotional Health for Mars Exploration
… with commercial successes and NASA’s Artemis missions driving rapid growth and innovation. Plans for longer, larger, and more complex missions necessitate development of new mission architectures to sustain the crews needed to support these missions. Larger missions and multi-site …
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Active Magnetic Radiation Shielding For Long-Duration Human Spaceflight
… limiting factors for</p> <p>NASA’s planned mission to Mars by the 2030s. Radiation exposure on a Mars mission</p> <p>is delivered primarily by high energy ions from galactic cosmic rays and moderate</p> <p>energy protons from solar particle events. The chronic radiation dose due to …
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Reducing human radiation risks on deep space missions
… radiation exposure risks for humans on the first missions to Mars. Alternatives are reviewed in the areas of Mars mission architectures, various shielding technologies, and medical treatment options to help mitigate the risks of radiation doses received. The over-arching goal of this study is to …
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Evaluation of power generation system architectures for manned Mars missions
… concepts capable of supporting a 20 crewmember Mars mission by the year 2040. The thesis confirms that current thin film solar technology is sufficient to sustain this mission, given the base of operations is located in the northern hemisphere (20°N-30°N) and is using regenerative fuel cells as …
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Magnetohydrodynamic energy generation and flow control for planetary entry vehicles
Proposed missions such as a Mars sample return mission and a human mission to Mars require landed payload masses in excess of any previous Mars mission. Whether human or robotic, these missions present numerous engineering challenges due to their increased mass and complexity. To overcome these …
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Design of power systems for extensible surface mobility systems on the Moon and Mars
… surface mobility systems on the Moon and Mars. The mathematical model of power systems for planetary vehicles was developed in order to estimate power system configuration with given mission parameters and vehicle specifications. The state-of-art power source technologies for space …
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Multi-Objective Exploration of Refueling Architecture for Sustainable Crewed and Cargo Space Transportation
… focusing on their application to the human space missions such as Artemis. The framework tightly couples vehicle sizing with a boil-off control model, allowing the evaluation of various combinations of propellant types, refueling locations, and boil-off control. The model captures the dynamic …
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Multi-Objective System Optimization of a Mars Atmospheric ISRU Plant
The Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE) represents the first time that NASA 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 …
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Investigating the Impact of Communication Delay on Mission Control as an Effective Team Member with the Crew
… Administration (NASA) aims to send humans to Mars in the coming decade. However, the significant communication delay of up to 22 minutes one way poses challenges for Mission Control (MC) in fulfilling its role as an effective team member with the crew, potentially jeopardizing mission safety …
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Behavioral Motivation of Prospective Mars’ Crewmembers
… hoping to find life on other planets such as Mars. This research was conducted to explore the effects on human behavior and willingness to go to Mars when individuals were informed about all the possible risks. Two studies were conducted to examine the participants. First, through an online …
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Engineering Robust and Autocatalytic Architectures for Human Missions to Mars
For decades, Mars architectures had been constrained to up to 6 crew members for surface endurances up to 600 days because the increased mass for larger missions implied significantly higher costs. More recently, reusable rockets and mass manufacturing approaches are starting to transform the human …
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System modeling, graphical user interface development, and sensors testing for the Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE)
The Mars Oxygen In-Situ Resource Utilization Experiment (MOXIE) represents the first time that NASA is demonstrating In-Situ Resource Utilization (ISRU) on the surface of another planetary body. MOXIE will produce oxygen from atmospheric CO 2 on Mars. It is being developed for NASA's 2020 Mars …
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Evaluating the Performance of Fibers and Fabrics for Astronaut's IVA Wardrobes for Long Duration Space Flight
… IVA clothing. With the advent of a long duration mission to Mars, NASA is seeking innovative ways to reduce the weight impact and linting problems associated with IVA clothing during long duration space flight. This research provides NASA with recommendations for improved IVA apparel and a …