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 15 of 15 for “"In-Space Assembly"”.
-
Reconfigurable Resonant Cubic HF Phased Array for In-Space Assembly Operation
… phased arrays face two major shortcomings: the presence of ambiguities in direction of arrival measurements and beam broadening endfire effects. The literature provides methods for addressing and minimizing these problems on conventional planar phased array structures, but there has …
-
Semantic and Fiducial Aided Graph Simultaneous Localization and Mapping for Robotic In-Space Assembly and Servicing of Large Truss Structures
… aided graph simultaneous localization and mapping (SF-GraphSLAM) method that is tailored for robotic assembly and servicing of large truss structures. SF-GraphSLAM contributes to the state of the art by creating a novel way to add associations between map landmarks, in this scenario fiducials, …
-
Autonomous rendezvous and docking with tumbling, uncooperative, and fragile targets under uncertain knowledge
As efforts to expand humanity's presence in space continue to increase, a need for spacecraft to autonomously perform in-space close proximity maneuvers without a human operator increases, as well. Such in-space close proximity maneuvers include active debris removal, satellite servicing, and …
-
Real-time quasi-analytical trajectory generation for docking with tumbling objects
The capability to rendezvous and dock 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 …
-
Characterization of on-orbit robotic assembly
On-orbit assembly missions typically involve humans-in-the-loop and use large custom-built robotic arms designed to service existing modules. The concept of on-orbit robotic assembly of modularized CubeSat components supports use cases such as rapidly placing failed nodes within a constellation of …
-
Task Modeling, Sequencing, and Allocation for In-Space Autonomous Assembly by Robotic Systems
As exploration in space increases through the use of larger telescopes, more sophisticated structures, and physical exploration, the use of autonomous robots will become instrumental to build and maintain the infrastructures required for this exploration. These systems must be autonomous to deal …
-
Bond exchange reactions in high temperature thermoset polymers
In this work, we examine the use of exchangeable bonds within an all-aromatic thermoset to enable reversible bonding towards potential utility as an adhesive for in-space assembly. Interchain transesterification (ITR) is a type of bond exchange reaction accessible by polymers possessing ester …
-
Strategies for launch and assembly of modular spacecraft
… system between Earth and the Moon or Mars. In recent years, unfortunately, human space exploration programs have faced myriad political, technical, and financial difficulties. In order to avoid such problems, future human space exploration programs should be designed from the start for …
-
Localization Performance Improvement of a Low-Resolution Robotic System using an Electro-Permanent Magnetic Interface and an Ensemble Kalman Filter
As the United States is on the cusp of returning astronauts to the Moon, it becomes increasingly apparent that the assembly of structures in space will have to rely upon robots to perform the construction process. With a focus on sustaining a presence on the Moon's surface in such a harsh and …
-
Computational Fabrication and Assembly for In Situ Manufacturing
Fabrication today relies on disparate, large machines spread across industrial facilities. These are operated by domain experts to construct and assemble artefacts in sequential steps from large numbers of parts. This traditional, centralized mass manufacturing paradigm is characterized by large …
-
Development of miniature robotic arm manipulators to enable smallsat clusters
This Thesis was approved for publication on 2017-04-28 at 13:56.
-
Active Force Correction of Off-Nominal Structures Using Intelligent Scaffolding
The culmination of this research focuses on the area of structural support and stability as it relates to the field of large space structures. Fitting into the branch of in-space assembly, servicing, and manufacturing (ISAM), this topic covers essential subject matter areas of robotic manipulation, …
-
Optical Satellite/Component Tracking and Classification via Synthetic CNN Image Processing for Hardware-in-the-Loop testing and validation of Space Applications using free flying drone platforms
The proliferation of reusable space vehicles has fundamentally changed how we inject assets into orbit and beyond, increasing the reliability and frequency of launches. Leading to the rapid development and adoption of new technologies into the Aerospace sector, such as computer vision (CV), machine …
-
Parametric Modeling of Deformable Linear Objects for Robotic Outfitting and Maintenance of Space Systems
Outfitting and maintenance are important to an in-space architecture consisting of long duration missions.During such missions, crew is not continuously present; robotic agents become essential to the construction, maintenance, and servicing of complicated space assets, requiring some degree of …
-
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 …