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 8 of 8 for “"shield design"”.
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Divergent Plume Reduction of a High-Efficiency Multistage Plasma Thruster
… and specific impulse. This thesis explores the design and application of a magnetic shield to modify the thruster’s magnetic field to force more ion current towards the centerline. A previous Cal Poly thesis explored the same concept, and that work is continued and furthered here. The previous …
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On-Orbit Cryogenic Propellant Storage Optimization
… the moon, and Mars. The optimal CPS sun-shield design and attitude control approach documented herein minimizes LH2 boiloff to near zero boiloff in Low Earth Orbit (LEO) using only passive thermal control techniques, eliminating the need for developing complex and costly active thermal …
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Hollow Plume Mitigation of a High-Efficiency Multistage Plasma Thruster
… to characterize this plume shape and implement a shield to restore a conical shape to the plume. A similar solution was used on a different type of thruster, a cylindrical hall thruster, at Princeton with excellent results. A shield was designed to shunt the magnetic field outside the thruster, …
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Drug delivery during breastfeeding: investigations of formulations and clinical feasibility
… need for clean water. Hereby, a silicone nipple shield, containing a formulation inside its teat, is meant to be worn by a mother during breastfeeding, enabling drug delivery to the sucking infant through the flow of human milk. Furthering past research, this doctoral work aimed to investigate …
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Methodologies for Design-Oriented Electromagnetic Modeling of Planar Passive Power Processors
… quality and tighter regulations raise various design challenges. Because inductors and transformers constitute a rather large part of the overall converter volume, size and performance improvement of these structures can subsequently enhance the capability of power converters to meet these …
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A High-Resolution Microscopic Electrical Impedance Imaging Modality: Scanning Impedance Imaging
… used to optimize both the probe height and the shield-spacing for probe fabrication and also to evaluate system parameters including the frequency and the resistor in the peripheral circuit. Based on this model, an approach is also developed to quantifying conductivity values using the SII …
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Procedimiento de estimación de la presión de trabajo óptima en la cámara de mezclado de un escudo de presión de tierras. Implicación en los parámetros de diseño del escudo
… problems to be solved when a tunnel is being designed and constructed. Tunnel execution by Earth Pressure Balance (EPB) shields is a good solution of the problems associated to that instability. The performance of EPB shield for maintaining the required support pressure at the tunnel face …
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Investigations of Hypervelocity Impact Physics
… brief plasmas at higher speeds. Sacrificial shields have been developed to protect critical components from damage under these conditions, but the response of many materials in such an extreme event is still poorly understood. This work presents the summary of computational analysis methods …