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 23 for “"On-Orbit Servicing"”.
-
On-orbit servicing for satellite upgrades
Except for manned servicing operations using the Shuttle, there is no maintenance infrastructure for space systems. The traditional approach is to build in reliability and to replace the system in case of obsolescence or failure. Space systems therefore offer a limited degree of flexibility to …
-
Prototyping and Testing an Inflatable Robot for On-Orbit Servicing
L'abstract è presente nell'allegato / the abstract is in the attachment
-
On-Orbit Servicing System Architectures for Proliferated Low Earth Orbit Constellations
On-orbit servicing (OOS) presents new opportunities for refueling, inspection, repair, maintenance, and upgrade of spacecraft (s/c). OOS is a significant area of need for future space growth, enabled by the maturation of technology and the economic prospects. This congestion is leading s/c …
-
Impact evaluation of in-space additive manufacturing and recycling technologies for on-orbit servicing
Made available in DSpace on 2018-09-04T20:42:00Z (GMT). No. of bitstreams: 2 SEARS-THESIS-2018.pdf: 502754 bytes, checksum: 9fc27d97554ffc268d11cbb6ddbe49d3 (MD5) LICENSE.txt: 4210 bytes, checksum: 0cc39aa6e04642f01c5b652b842fc32a (MD5) Previous issue date: 2018-04-27
-
Reconfiguration methods for on-orbit servicing, assembly, and operations with application to space telescopes
Reconfiguration is an important characteristic in furthering on-orbit servicing, assembly, and operations. Previous work has focused on large assemblers manipulating small payloads, where the dynamics of the assembler is not significantly changed. This work seeks to identify the impact of …
-
Modeling and simulation of permanent on-orbit servicing infrastructures dedicated to modularized earth-orbiting platforms
This research aims to quantify the responsiveness and cost-effectiveness of permanent on-orbit servicing (OOS) infrastructures providing services to multiple serviceable platforms in coplanar medium Earth orbit (MEO) and/or geostationary orbit (GEO). The customer satellites are assumed to be made …
-
Weaving time into system architecture : new perspectives on flexibility, spacecraft design lifetime, and on-orbit servicing
… is developed that addresses the following questions: 1) What are the characteristic features of flexibility in system design? Can one clearly and unambiguously characterize flexibility, and disentangle it from closely related concepts? 2) What drives the need for flexibility in system design, and …
-
A framework to account for flexibility in modeling the value of on-orbit servicing for space systems
… Institute of Technology, Dept. of Aeronautics and Astronautics, 2001.
-
A decision-making framework to determine the value of on-orbit servicing compared to replacement of space telescopes
The Hubble Space Telescope has demonstrated that on-orbit servicing can provide significant benefits for scientific space programs. Specifically, servicing missions can replace failed components to keep spacecraft operational, and can upgrade onboard components to improve spacecraft performance. …
-
On-orbit serviceability of space system architectures
On-orbit servicing is the process of improving a space-based capability through a combination of in-orbit activities which may include inspection; rendezvous and docking; and value-added modifications to a satellite's position, orientation, and operational status. As a means to extend the useful …
-
Study of Autonomous Capture and Detumble of Non-Cooperative Target by a Free-Flying Space Manipulator Using an Air-Bearing Platform
… Existing systems are heavily dependent on external systems to compute the position and orientation of the chaser and target satellite simulators. Using external sensors and high-power computers allows their systems to have high accuracy and high sampling frequencies. This approach is not …
-
Framework for evaluating customer value and the feasibility of servicing architectures for on-orbit satellite servicing
The question that this thesis examines is whether traditional monolithic satellite designs have limited the value that the satellite market generates for the space industry. To answer this question, this thesis focuses on the "Value" that satellites generate. By examining the value that satellites …
-
In Space Reverse Logistics
… 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 a Workshop Space Station (WSS) …
-
Dynamic and Control of Air-Bearing Spacecraft Simulator
… bearing is being designed as a spacecraft rotational motion simulator, featuring the Sawyer Robot and its control box. The objective is to maneuver the robot as desired, performing operations specific to on-orbit servicing operations while maintaining stability of the system. Before the control …
-
Autonomous Visual Servo Robotic Capture of Non-cooperative Target
… develops and validates experimentally a vision-based control scheme for the autonomous capture of a non-cooperative target by robotic manipulators for active space debris removal and on-orbit servicing. It is focused on the final capture stage by robotic manipulators after the orbital …
-
Analyzing Attitude Correction of a Spacecraft Due to the Motion of a Robotic Arm Payload
There are millions of pieces of space debris in orbit around Earth that pose threats to operating spacecraft. Some of these debris can be attributed to satellite failure, or end-of-life protocols. With a continual increase in commercial satellite launches per year, decommissioned spacecraft act as …
-
Exploring design and policy options for orbital infrastructure projects
… industry is currently at a significant inflection point. New economies are forming in low- Earth orbit (LEO), driven by miniaturization of technologies and the promise of lower launch costs, which should then allow many of these LEO systems to capitalize on designs incorporating smaller, …
-
Guidance and control for multi-stage rendezvous and docking operations in the presence of uncertainty
Rendezvous and docking missions have been a mainstay of space exploration from the Apollo program through present day operations with the International Space Station. There remains a growing interest in several mission types that not only rely on rendezvous and docking, but also rely on maneuvering …
-
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 …
Page 1 of 2