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 13 of 13 for “"Active Debris Removal"”.
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Feasibility of Microsatellite Active Debris Removal Systems
<p>Space debris has become an increasingly hazardous obstacle to continued spaceflight operations. In an effort to mitigate this problem an investigation of the feasibility of a microsatellite active debris removal system was conducted. Through proposing a novel concept of operation, utilizing a …
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Asteroid deflection and active debris removal methods with spaceborne lasers
… the case where the target is a manmade piece of debris orbiting around the Earth instead of an asteroid.;In this case, pulsed lasers rather than CW lasers are considered in order to maximize the achievable laser intensity (TW/m2 can be achieved even with a few watts of average power and moderate …
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A Viable Orbital Debris Mitigation Mission using Active Debris Removal
… environment contains a growing number of orbital debris objects. This growing orbital debris population increases collision probabilities between both orbital debris and functioning satellites. A phenomenon known as Kessler Syndrome can be induced if these collisions occur. Kessler Syndrome states …
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Long-term effects of satellite megaconstellations on the debris environment in low earth orbit
… will affect their contributions to orbital debris over the next 150 years. A new, medium-fidelity simulation for modeling orbital debris is developed and described, and several test cases are run with SpaceX’s Starlink megaconstellation and varying success rates for post-mission disposal. In …
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Autonomous rendezvous and docking with tumbling, uncooperative, and fragile targets under uncertain knowledge
… Such in-space close proximity maneuvers include active debris removal, satellite servicing, and in-space assembly. Active debris removal will facilitate the continued use and access to low Earth orbit, mitigating the exponential debris growth occurring due to decrepit satellites and rocket bodies …
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Real-time quasi-analytical trajectory generation for docking with tumbling objects
… has become prominent with increased interest in active debris removal, satellite servicing, and in-space assembly. Guidance and control algorithms have been developed in the literature to allow for a spacecraft to capture an uncooperative and tumbling object under several constraints such as …
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Evolutionary Spacecraft Design Using a Generalized Component-Resource Model
… as well as to the design of low Earth orbit active debris removal spacecraft constellations.
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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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Robust Control and Learning for Autonomous Spacecraft Proximity Operations with Uncertainty
As the number of spacecraft and debris objects in orbit rapidly increases, active debris removal and satellite servicing efforts are becoming critical to maintain a safe and usable orbital environment. At the same time, future unmanned solar system exploration missions are targeting challenging …
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Polynomial motion planning in spacecraft attitude and docking to tumbling debris
… the frame of docking to a tumbling satellite for Active Debris Removal missions (in which the detumbling case is also studied). In the case of attitude slew manoeuvres, quaternions are shaped with polynomials and normalised.Issues such as numerical stability of high-order polynomials and the …
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Optimal docking to tumbling objects with uncertain properties
Active debris removal (ADR), on-orbit servicing and in-space assembly likely require proximity operations and soft docking between two or more satellites. These operations can be complicated by the presence of several challenges, including 1) flexible dynamics, 2) impending collision with other …
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RIDDS: Removal of Irregular Debris Using Double Nets
<p>The quantity of debris in Earth’s orbit is increasing at an alarming rate, and without a sustainable solution, this will detriment the space environment, impacting the future of space travel and space traffic management. While numerous debris removal concepts and designs have been proposed, very …
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Starfish: A Compact, Biomimetic, and Adaptive Shape Memory Alloy Orbital Debris Remover
… thesis aims to turn the tides on the orbital debris issue through the fabrication and demonstration of a compact, biomimetic, and adaptive shape memory alloy actuated orbital debris remover. The design, referred to as Starfish, is discussed in detail along with its fabrication process and …