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 51 for “"Space Debris"”.
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Evolution of artificial space debris clouds
… whether by explosion or collision, a cloud of debris is formed. The overall objective of the PhD is to examine the interaction between the debris clouds produced by on-orbit fragmentation events and specific space systems. A breakup event will give rise to concentrations of debris which, for …
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Orbiting space debris : dangers, measurement and mitigation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Modeling the Future Space Debris Population and Orbital Capacity
… thousands of satellites have been proposed, with SpaceX’s Starlink satellite constellation now reaching more than 5400 operational satellites. This denser LEO environment underscores the urgent need for models to predict and manage the risk of collisions and the sustainable use of space. Many …
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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. …
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Visual Servo Based Space Robotic Docking for Active Space Debris Removal
… and at different angles, for the purposes of space robotic rendezvous and docking control. The computer vision algorithm was paired with a virtual robotic simulation to test the feasibility of using the proposed algorithm for visual servo. This thesis also developed a method for generating …
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Self Balanced Bare Electrodynamic Tethers. Space Debris Mitigation and other Applications
… of both concepts working together in several space applications: from mitigation of the space debris to capture in a Jovian orbit. The computation of the electron collection by a bare tether is faced in first place. The semi-analytical method derived in this work allows to calculate accurately …
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Mission Planning Tool for space debris studies with the MeerKAT radar
… the MeerKAT radio telescope as receiver for space debris detection, tracking and imaging. This dissertation details the development of a Mission Planning Tool (MPT) to perform sensor scheduling and to support the performance prediction and analysis of the proposed MeerKAT radar. The MeerKAT …
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Investigation of the potential applications of shape memory alloys for space debris remediation applications
Active debris removal is becoming an important area of research due to the rapid growth of space debris and the need for some form of debris remediation. Debris remediation concepts fall into two general categories: contactbased and contactless. Contact-based schemes for debris capture have to …
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Astronaut Extravehicular Activity : safety, injury & countermeasures; &, Orbital collisions & space debris : incidence, impact & international policy
Extravehicular Activity (EVA) spacesuits 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 …
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A Feasibility Study of CubeSat Architectures for Space Debris Removal from Low Earth Orbit
The rapid increase of space debris in low earth orbit has had tangible impacts on government and commercial missions and caused growing concern among the space community. Removal of collision-prone objects using deorbiter satellites represents a viable strategy for stabilizing the debris …
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On the Atmospheric Saliency of Space Debris Reentries: Estimating Distribution, Lifetime and Radiative Forcing of Reentry-Ablated Alumina
As the space economy grows, numerous satellite operators are looking to build megaconstellations in Low Earth Orbit (LEO). These megaconstellations are expected to have hundreds to thousands of satellites operating in altitudes from 350km to 650km. Once built, many of these constellations will …
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Orbital debris : drafting, negotiating, implementing a convention
It is time to recognize that while space may be infinite, Earth orbital space is a finite natural resource that must be managed properly. The problem we face with space pollution is complex and serious. The space treaties and conventions are not sufficient. They were drafted at the time of space …
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The Mineralogy And Chemistry Of Micrometeorites
… up the 'V2' solar array panel from the Huhble Space Telescope (HST) were prone to hypervelocity (>5 km/s ) impact damage from micrometeoroids and space debris. The analysis of such passive collector surfaces allows sampling of micrometeoroids that have not undergone any terrestrial atmospheric …
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Governing Outer Space as a Global Commons: Examining ‘Tragedy’ in Orbital Medium
… purpose of this research is to examine the outer space governance regime and to identify key governance deficits which are arguably the main reason for the far-reaching proliferation of space debris in the outer space commons. To this end, the research initially inspects two of the existing global …
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Observation of Low Earth Orbit Debris using GNSS Radar
Space debris is an increasing hazard to space assets, and accurate, affordable tracking of all space objects is necessary to maintain efficient and safe space operations. There is a very large quantity of debris objects 10cm or smaller which pose a hazard to spacecraft, but are difficult to …
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The Impact of Atmospheric Models on the Dynamics of Space Tether Systems
Space debris has become an increasingly larger concern for aerospace travel and exploration. One idea to control the space debris population is to de-orbit defunct satellites using a space tether system. A space tether system is often made up of three parts: the main satellite, the tether and the …
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Evolutionary Debris Modeling of LEO and Cis-Lunar Space
Space debris can be detrimental to missions in any orbital regime. With the advent of large satellite constellations in Low Earth Orbit (LEO) and planned return missions to the Moon, the risk created by fragmentation events in both LEO and cis-lunar space motivates an analysis of space debris …
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In Space Reverse Logistics
This study proposes In Space Reverse Logistics (ISRL), a fully reusable multi-mission network design for mitigating and remediating space debris in proliferated Low Earth Orbit (pLEO) constellations. The ISRL design aims to collect defunct satellites from their operating orbits and to bring them to …
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System design of the MeerKAT L - band 3D radar for monitoring near earth objects
… investigates the current knowledge of small space debris (diameter less than 10 cm) and potentially hazardous asteroids (PHA) by the use of radar systems. It clearly identifies the challenges involved in detecting and tracking of small space debris and PHAs. The most significant challenges …
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