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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 11 of 11 for “"nano-satellites"”.
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Attitude Determination and Control of Nano-Satellites
… bus is unique in that it is among only a few nano-satellites that implements three-axis, onboard attitude determination and control. Though this is an ambitious goal, it will allow for a wide range of scientific missions to be accomplished on this bus. To complete the system, an accurate …
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A CFD Investigation of Axisymmetric Microthruster Nozzles for Use on Nano-Satellites
… propellant and surroundings, destined for use in nanosatellite missions, is investigated via a numerical approach using the Wind-US flow solver. An experimental apparatus designed to measure microthruster performance in atmospheric or vacuum conditions used to aid numerical simulations is also …
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Investigating Energetic Porous Silicon as a Solid Propellant Micro-Thruster
… mobile platforms such as microrobots and nano-satellites. Porous silicon becomes reactive when nano-scale pores are infused with an oxidizer such as sodium perchlorate. In this work, energetic porous silicon was investigated as a means of propulsion by quantifying thrust and impulse …
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A Framework for Validation and Testing of a CubeSat Retarding Potential Analyzer
… Analyzers (RPAs) operate exclusively on large satellites due to the size, power, and mass constraints posed by nano-satellites like CubeSats. These sensors take in-situ measurements of Earth's atmospheric ion current during a range of time-varied ``retarding" voltage steps. Curve-fitting the …
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Exploring the Concept of a Deep Space Solar-Powered Small Spacecraft
… System (OSS) with the capabilities of low-power nano-satellites may enable much more affordable access to deep space. This paper explores a design concept for a low-cost, small spacecraft, designed to study the OSS and satisfy mission requirements with solar power. The general spacecraft design …
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Considerations for a multi-modal electrospray propulsion system
Micro- and nano-satellites have begun to garner significant interest within the space craft community as economic trends encourage a shift away from larger, stand-alone satellite platforms. In particular, CubeSats have emerged as popular, economic alter natives to traditional satellites which might …
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Developing Hybrid Near-Space Technologies For Affordable Access To Suborbital Space
… systems. With the increased development of nano-satellites and atmospheric sensors, combined with rising interest in global atmospheric data, there is an increase in desire for affordable access to extreme altitudes that does not necessarily require the precision of ground launches. </p> <p> …
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Solar radiation pressure, drag and gravitational effects on a dust particle in Earth orbit
… to aid precise orbital propagation of swarms of nano-satellites through the use of heavier computational resources. Due to the non-specific nature of all parameters used, this model can also be utilized for missions at other planetary bodies or those in lunar orbit. Inclusion of higher-order …
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Real time hardware in the loop simulation testbed of spacecraft formation flying
… for low earth orbit autonomous SFF consisting of nano satellites has been developed which can integrate original hardware in the close or open loop. The proposed real time close loop test bed consists of a real time SFF model, a real time relative navigation system, guidance and control algorithm, …
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The X-ray and gamma-ray sky - Temporal, spectral and triangulation techniques for the characterization and localization of sources in High Energy Astrophysics
… of the mission, based on a constellation of nano-satellites with the aim of accurately localizing gamma-ray bursts. The HERMES mission aims to study GRBs and provide quick and accurate localization through triangulation techniques. From the simulated data, we can test the spectral properties …
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Laser Ablation Propulsion: Synthesis and Analysis of Materials and Impulse Measurements
… one of the more recent taken is related to nanosatellites propulsion. The study of Laser Ablation Propulsion (LAP) requires research activity on different fields like high power pulsed lasers, laser ablation itself, because it is still a problem to relate the well known mechanisms to impulse …