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 20 of 60 for “"space propulsion"”.
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Materials for small-scale space propulsion systems
… creating emitter arrays for the ion electrospray propulsion system (iEPS), a compact, efficient, and scalable space propulsion system for use in a wide range of space missions. The increasing utilization of small, cheap, easy-to-launch satellites known as CubeSats has spurred demand for a …
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Development of Magnetic Nozzle Simulations for Space Propulsion Applications
A means of space propulsion using the channeling of plasma by a divergent magnetic field, referred to as a magnetic nozzle has been explored by a number of research groups. This research develops the capability to apply the high order accurate Runge-Kutta discontinuous Galerkin numerical method to …
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Investigation of a space propulsion concept using inertial electrostatic confinement
… Inertial Plasma Electrostatic Rocket (HIIPER), a space propulsion concept consisting of a helicon source for plasma generation and an ion extraction method using a nested pair of inertial electrostatic confinement (IEC) grids that are asymmetrically designed. In this study, which used argon as a …
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Power balance in a helicon plasma source for space propulsion
Electric propulsion systems provide an attractive option for various spacecraft propulsion applications due to their high specific impulse. The power balance of an electric thruster based on a helicon plasma source is presented. The power balance is shown to be comprised of several variables, …
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Medium size nuclear power source for space propulsion and applications.
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Thesis. 1970. M.S.
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The design and feasibility of a 10 mN chemical space propulsion thruster
… the design of a ten milli Newton chemical propulsion system for providing approximately 200 m/s delta velocity to a five kg satellite. The nozzle is the focus of the experimental work, which involves building and testing ten 20x upscale 2D nozzles. The ten nozzles involve three classes, an …
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A fully microfabricated two-dimensional electrospray array with applications to space propulsion
… lead to more efficient and precise thrusters for space propulsion applications. The same techniques could be used for making arrays to increase throughput in many other electrospray applications. Electrospray thrusters work by electrostatically extracting and accelerating ions or charged droplets …
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An analysis of energy balance in a helicon plasma source for space propulsion
This thesis covers work done on the mHTX@MIT helicon source as it relates to the analysis of power losses. A helicon plasma is a rather complex system with many potential loss mechanisms. Among the most dominant are optical radiation emission, wall losses due to poor magnetic confinement, and poor …
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Design of a cusped field plasma thruster
A plasma space propulsion thruster has been designed. It is classified as a Cusped Field Thruster (CFT), which refers to the geometry of the magnetic field that influences the flow of electrons and ions. The thruster was modeled after an original Diverging Cusped Field Thruster (DCFT) developed at …
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Improvements to a fully kinetic Hall thruster simulation code and characterization of the cylindrical cusped field thruster
… cylindrical Hall thrusters. This class of space propulsion devices has come under attention since the 1990s as a possible candidate for the propulsion of 100-1000 kg satellites. In first part, a fully kinetic simulation code developed at the MIT Space Propulsion Laboratory (SPL) is …
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The design, fabrication and testing of micro-fabricated linear and planar colloid thruster arrays
New space applications such as orbital control of micro-satellites and precise interferometry have created a demand for high precision, low thrust efficient space engines. Electrospray propulsion is a serious candidate for this new technological niche. Electrospray thrusters are space propulsion …
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Active Thermal Augmentation and Ultra Dense MEMS-Based Electrospray Thrusters
… thrusters, a highly efficient form of electric space propulsion, have several advantages over traditional chemical forms of space propulsion as well as competing forms of electric propulsion, including their unique scalability down to extremely small sizes, their use of nontoxic propellants that …
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Formation and extraction of a dense plasma jet from a helicon-plasma-injected inertial electrostatic confinement device
… has its own potential application for electric space propulsion. The jet-mode gets its name from the characteristic bright plasma jet emanating from the central grid. In this dissertation work, a full study was undertaken to provide an understanding on the formation and propagation of the IEC …
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The Dynamics and Control of the Cubesail Mission---A Solar Sailing Demonstration
… the slow emergence of solar sailing as a viable space propulsion method. The low technology readiness level and complications related to stowage, deployment, and support of the sail structure are both addressed by combining the CU Aerospace and University of Illinois-developed UltraSail and …
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The dynamics and control of the CubeSail mission—A solar sailing demonstration
… the slow emergence of solar sailing as a viable space propulsion method. The low technology readiness level and complications related to stowage, deployment, and support of the sail structure are both addressed by combining the CU Aerospace and University of Illinois-developed UltraSail and …
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Instruments design and testing for a Hall thruster plume experiment on the space shuttle
… experiment (ETEEV) is designed to obtain in-space measurements in the plume and backflow regions of lowpower thrusters. The ETEEV payload will be installed on a Hitchhiker-palette onboard the Shuttle and will use plasma diagnostics mounted on the palette as well as on an articulated boom. …
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Analysis of power balance in a helicon plasma source
… Inertial Plasma Electrostatic Rocket (HIIPER), a space propulsion concept consisting of a helicon source for plasma generation and an ion extraction method using a nested pair of inertial electrostatic confinement (IEC) grids that are asymmetrically designed. In this study, the HIIPER setup was …
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