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.
Results
Showing 1 to 20 of 80 for “"Astronaut"”.
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Dynamic analysis of astronaut motions during extravehicular activity
… of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Electronic architecture and technoogy development of astronaut spaceflight load sensors
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Development of astronaut reorientation methods : a computational and experimental study
Past spaceflight missions have shown that astronauts adapt their motor-control strategies to the microgravity environment. Even though astronauts undergo hundreds of training hours, the strategies for locomotion and orientation are not specifically prescribed. The majority of an astronaut's …
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Enhancing astronaut mobility through spacesuit kinematics and interactive space outreach
… Adapting this paradigm shift requires astronauts, both symbols and key elements of human space exploration, to be fully equipped to explore and share their experiences. Consequently, astronaut mobility during the exploration mission, characterized by spacesuit kinematics, as well as …
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Producing Knowledge about Astronaut Health Risks: Navigating Interdisciplinary Actor-Networks
When astronauts return from a space mission they smile for the cameras, but behind the scenes they undergo grueling rehab to recover from the effects of space and may face long-term health consequences. Space flights lasting more than thirty days are considered long-duration and may impact …
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The overview effect and counselling psychology: astronaut experiences of earth gazing
… Aeronautics and Space Administration (NASA) astronauts experienced Earth gazing from orbit and viewing nature from this perspective. Three main themes emerged: 1) Deeply Impactful Perceptions of Earth, 2) Profound and Unexpected Emotional Impact and, 3) A Space Odyssey. The first theme …
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Astronaut adaptive arm motions on the MIR Space Station : kinematic analysis
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Imagining an Astronaut: Space Flight and the Production of Korea's Future
… debates and discourses surrounding the Korean Astronaut Program (KAP) using the concepts of sociotechnical imaginaries, sociotechnical vanguards, and the construction of expertise. Based on documentary analysis and oral interviews, this research considers KAP as an example of how the visions of …
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Quantifying and modelling adaptive astronaut movement : motion strategies for long-duration spaceflight missions
Past spaceflight experience has shown that astronauts adapt their motor control strategies to microgravity movements after approximately four weeks of microgravity exposure. A similar (but typically shorter) re-adaptation period is required upon return to Earth or partial gravity environment such …
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Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
… in 2016, tested the ability of nighttime astronaut imagery from the International Space Station (ISS) to detect impervious cover. The artificial lighting emitted from a city’s nightscape is used as a proxy for imperviousness. This paper expands on their research by focusing on the …
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Cameras as Cultural Stressors in Changing the Immune System: Implications for NASA’s Astronaut Program
… to link the two and how this could influence astronaut health in current or future missions. This study used salivary cortisol concentrations run through an ELISA for twelve test subjects and surveys for eighteen subjects to determine the biological stress effects of cameras. Results showed …
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Simulation development and analysis of attitude-control system architectures for an astronaut mobility unit
Control-moment gyroscopes (CMGs) are spacecraft attitude-control actuators which control the spacecraft's orientation and pointing. CMGs operate on electrical power and therefore obey the the conservation of angular momentum. Single-gimbal CMGs are equipped with a high-speed flywheel which can be …
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Relationship between astronaut head motion and space motion sickness on Spacelabs 1 and D1
… of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Astronaut Extravehicular Activity : safety, injury & countermeasures; &, Orbital collisions & space debris : incidence, impact & international policy
… are a key enabling technology which allow astronauts to survive and work in the harsh environment of space. Of the entire spacesuit, the gloves may perhaps be considered the most difficult engineering design issue. A significant number of astronauts sustain hand and shoulder injuries during …
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Model of medical supply demand and astronaut health for long-duration human space flight
… a model of long-duration human space flight astronaut health and a medical supply demand model in support of such missions. This model will be integrated into an existing comprehensive interplanetary supply chain management and logistics architecture simulation and optimization tool, …
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Astronaut-centric analysis of a jetpack with integrated control-moment gyroscopes for enhanced extravehicular activity performance
… missions would limit the independent mobility of astronauts, a maneuvering unit that offers counter reaction forces and torques during movements and tasks will likely be required. The next-generation maneuvering and stability system proposed in this research incorporates control moment gyroscopes …
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Supernumerary Robotic Limbs for Next Generation Space Suit Technology
… considered one of the most complex operations an astronaut can perform during a spaceflight mission. Coordinating and executing EVAs are complex and costly affairs that are a necessity for any space vehicle; this is especially true for expanding the longevity of a spacecraft, like that of the …
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OmicsSpace: A Proposed Omics Data Plan for NASA Human Research and Clinical Investigations
… or as the result of environmental exposures. Astronauts can experience numerous environmental changes during spaceflight including exposure to solar and cosmic radiation, circadian rhythm shifts, body fluid shifts, altered levels of carbon dioxide and oxygen, and changes in ambient pressure. …
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Low magnitude high frequency vibrations applied to the foot through the pedal of a human powered artificial gravity (HPAG) cycle
Astronauts are exposed to hazards unique to space travel. These hazards include radiation exposure and adaptation of the human body to the microgravity environment. For lunar and low earth orbital missions, the exposure period is typically less than six months and return to Earth is less than two …
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