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 9 of 9 for “"De-orbit"”.
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NEIGHBOR: A reliable de-orbit device for CubeSats
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Atomic Oxygen Considerations for LEO De-orbit Trajectories Using Solar Sails
… required for present-day use. To grow confidence in solar sail technology, they could be deployed on LEO satellites higher than 600 km to help de-orbit the satellite within 25 years upon mission termination. To determine how atomic oxygen would affect the solar sail, material from …
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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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Development of Safety Standards for CubeSat Propulsion Systems
<p>The CubeSat community has begun to develop and implement propulsion systems. This movement represents a new capability which may satisfy mission needs such as orbital and constellation maintenance, formation flight, de-orbit, and even interplanetary travel. With the freedom and capability …
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Constrained trajectory optimization of a soft lunar landing from a parking orbit
… completed. Metrics of trajectory evaluation included fuel expenditure, terminal attitude, thrust histories, etc.. The vehicle was initialized in a circular parking orbit and the trajectory divided into three distinct phases: de-orbit, descent, and braking. Analysis was initially performed with …
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Phasing of Ground-based Optical Arrays for Space Applications
Delivery of optical power to targets in space has many applications, including optical communication, active sensing, laser propulsion, and the removal of space debris. However, large monolithic optics required to obtain high directivity are costly and difficult to slew at the rates required to …
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Orbital Debris Removal Technologies: A Hybrid Electrodynamic Tether and Ion Beam Shepherd Satellite Design for Fuel Efficient Contactless Debris Removal
<p>Space debris poses a serious threat to humanities efforts at space exploration as well as the expanding uses for earth-orbiting satellites. This thesis investigates the proposed technologies for the debris's removal both large and small. Focus is applied to the large debris removal technologies …
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A CubeSAT Orbital Test Platform for an Electrothermal Plasma Micro-Thruster
… and capability of CubeSats increases, a demand for propulsion systems is becoming apparent. The limitations put forth in the ``CubeSat Design Specifications" and the additional difficulties of low available Size, Weight and Power (SWaP) for propulsion systems aboard CubeSats have left a …
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Self Balanced Bare Electrodynamic Tethers. Space Debris Mitigation and other Applications
… field since the 70’s. This technology has been developed thanks to both theoretical studies and demonstration missions. During this period, several technical issues were identified and overcome. Among those problems, two of them would entail an important reduction in the operational capabilities …