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 120 for “"space environment"”.
-
Welded repair and maintenance in the space environment
Thesis (Nav.E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.
-
The charging of composites in the space environment
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
-
A field programmable gate array based software defined radio design for the space environment
… to make the circuit more compatible with the space environment.
-
Analysis of Plasma Wave Irregularities Generated during Active Experiments in Near-Earth Space Environment
… irregularities generated during two active space experiments: the injection of an artificial dust layer, and high-power radio waves. The objective of the "first experiment is to examine the effects of artificially created dust layers on the scatter of radars from plasma irregularities …
-
Food Preparation And Dining In A Normalized Space Environment The Meal: A Centerpiece For Psychological Survival
… multipurpose units as the cooking aspect of space travel creates a more normalized space environment that gives the crew a sense of home away from earth. Bringing a cooking aspect to Mars will create a sense of community and improve the astronauts' mental and physical health. These units are …
-
Modeling of Plasma Irregularities Associated with Artificially Created Dusty Plasmas in the Near-Earth Space Environment
… irregularities embedded in dusty plasmas in space. Plasma irregularities embedded in a artificial dusty plasma in space may shed light on understanding the mechanism for enhanced radar scatter in Noctilucent Clouds (NLCs) and Polar Mesospheric Summer Echoes (PMSEs) in the earth's mesosphere. …
-
Performance Evaluation of a Lithium-Ion Pouch Battery Cell in Simulated Space Environment for a Pico-Satellite Concept (PicoSat)
… performance of the battery cell in a simulated space environment to determine its suitability for the PicoSat concept and identify any potential issues (such as due to the swelling of the battery cell pouch) during the operation of the satellite with the battery cell in space. In this thesis, an …
-
Built-in controller for self-test and repair of 3D integrated Nand flash memory chip, used in radiation intense space environment
… advancements in technology. Both terrestrial and space related applications thrive on efficient ways and new technology for storing data that is incorruptible and dependable. Research is continuously carried out on making storage systems vast and reliable. The development of 3D integration has …
-
New-Measurement Techniques to Diagnose Charged Dust and Plasma Layers in the Near-Earth Space Environment Using Ground-Based Ionospheric Heating Facilities
… region associated with mesospheric dusty space plasmas may be modulated by radio wave heating with ground-based ionospheric heating facilities. These experiments show great promise as a diagnostic for the associated dusty plasma in the Near-Earth Space Environment which is believed to have …
-
Architecturing the future national security space domain awareness acquisition enterprise
Space-based capabilities are increasingly critical to prosperity in the United States (US) and around the globe. They are deeply embedded within society's vital functions and even more tightly intertwined with US national security capabilities across all warfighting domains. The disruption to these …
-
Computational Fabrication and Assembly for In Situ Manufacturing
… severe at points of need, such as the space environment. The space environment is remote and unpredictable, and the ability to manufacture in situ offers unique opportunities to address new challenges as they arise. However, the challenges faced in space are often mirrored on Earth. In …
-
Starfish: A Compact, Biomimetic, and Adaptive Shape Memory Alloy Orbital Debris Remover
… mimic those seen by actual orbital debris in the space environment is tested along with Starfish’s grip strength on various objects. Starfish demonstrated the ability to passively adjust its grip around target objects due to its extension spring actuated joints, resulting in only a momentary loss …
-
Effects of Atomic Oxygen on Outgassing of Silicone Materials
<p>An important consideration for spacecraft material selection is the space environment that the spacecraft will be operating in. Two features of the space environment that drive material selection are material outgassing and the presence of atomic oxygen in low Earth orbit (LEO). Materials that …
-
Safe Harbor: An Exploration in Lunar Habitation
… and theoretical challenges of urban design in a space environment. Analysis of the lunar environment aided by data and imagery from the Lunar Reconnaissance Orbiter allows the project to narrow focus on site selection while simultaneously capturing the bizarre and beautiful landscape. Intensive …
-
Effects of Atomic Oxygen on the Vacuum-Induced Mass Loss Properties of a Variety of Spacecraft Materials
<p>The space environment influences spacecraft design and material selection in many ways. Two aspects of the space environment that were of interest for this research are the vacuum and atomic oxygen (AO) environments. This project used the outgassing testing chamber and the AO chamber in the Cal …
-
A performance-driven experiment framework for space technology development using the International Space Station
Space systems are inherently difficult to verify prior to launch due to the challenges of replicating the space environment through ground testing. The SPHERES testbed on the International Space Station has provided a risk-tolerant test facility for evaluating enabling technology. The operational …
-
Adaptive and Responsive Design Under Uncertainty for Resource-Constrained Small Satellites
The space environment that satellites face is uncertain and challenging for survival and operation. Traditionally, satellite design methods mitigate the effects of uncertainty through the use of ample margin. However, robust designs often sacrifice significant nominal performance in exchange for …
-
Metrology and mechanics for manufacturing space-based x-ray grating spectrometers
… lithography, and display technologies. A space x-ray telescope needs more stringent requirements as it observes distant space objects using a limited number of x-ray photons in a harsh space environment. The optical instruments for x-ray telescopes need to be high-resolution, efficient in …
-
Analysis of LEO Radiation Environment and its Effects on Spacecraft's Critical Electronic Devices
<p>Spacecraft, space stations, satellites and astronauts are exposed to an increased level of radiation when in space, and it is important to evaluate the risks associated with extended radiation exposures in missions and space travel in general. The thesis focuses on the LEO radiation environment …
-
Exploring the relationship between the growing number of satellites and space debris in low earth orbit, and people's perception of space debris environmental impacts
… orbits is causing an increase to the numbers of space debris and inactive satellites in Earth's orbits which poses a growing threat of orbital collisions. Orbital collisions can trigger a domino effect, known as the Kessler syndrome, which can cause uncontrolled continuous orbital collisions. …
Page 1 of 6