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 8 of 8 for “"long duration space flight"”.
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Evaluating the Performance of Fibers and Fabrics for Astronaut's IVA Wardrobes for Long Duration Space Flight
… been recognized by NASA as a critical element of space exploration up until this point. The NASA Standard 3000 for Crew Personal Equipment includes an explanation of clothing guidelines, but lacks rigid requirements or measurable performance levels for IVA clothing. With the advent of a long …
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The effect of head turn velocity on Cross-coupled Stimulation during centrifugation
… to the deleterious physiologic effects of long-duration space flight. Short-radius centrifugation (SRC) provides a practical means of producing AG, though perceptual side-effects may potentially limit its operational feasibility. Head-turns in the rotating environment of SRC produce …
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Material Related Effects on the Structural Thermal Optical Performance of a Thermally Tunable Narrowband Interferometric Spectral Filter
… quality measurements, and climate forecasting. A spaceborne HSRL instrument can provide great impact in these areas by enabling near-continuous measurements across the Earth, however the optical filter technology has typically been too complex for reliable long-duration space flight due to the …
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Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation
… being pursued as a potential countermeasure to long duration space flight. Short-radius centrifugation requires relatively high angular velocities (on the order of 30 rpm) to create centripetal accelerations on the order of 1 g. Unfortunately, out-of-plane head movements during centrifugation …
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Exercise in artificial gravity
… physiological effects of microgravity during long-duration space flight. We investigated the feasibility of dual countermeasures to address space flight deconditioning of the musculoskeletal and cardiovascular systems, by combining centrifugation with lower-body exercise. The exercise device …
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Assessment of hip fracture risk in astronauts exposed to long-term weightlessness
… included extravehicular activity (EVA, with spacesuit) and intravehicular activity (IVA). The structural properties of the femur were analyzed using a three-dimensional finite element model derived from quantitative computed tomography scans of a representative cadaveric femur. Space flight …
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Regulator control of a short-radius centrifuge and subjective responses to head movements in a rotating environment
… order to effectively use artificial gravity as a long-duration space flight countermeasure, the effects of artificial gravity on the human body must be investigated. If artificial gravity is created by use of a short-radius centrifuge, the high angular velocity required, about 23 rpm, causes …
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Design and development of advanced load sensors for the International Space Station
… for the construction of the International Space Station (ISS) a risk mitigation experiment was conducted to quantify the crew-induced disturbances to the microgravity environment on board a spacecraft during a long duration space flight. Achieving a microgravity environment for scientific …