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 151 for “"electric propulsion"”.
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Optimization of electric propulsion orbit raising
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Nuclear Electric Propulsion with Low Enriched Uranium
… have used monopropellant or fuel-oxidiser propulsion systems to provide the required delta-v for orbital transfers and other in-space manoeuvres. Electric propulsion offers an alternative means of providing thrust that makes much more economical use of propellant due to its very high …
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Milli-Newton thrust stand for electric propulsion
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Hybrid Chemical-Electric Propulsion Systems for CubeSats
… navigation, or science, miniaturized propulsion systems have been actively developed and demonstrated in-flight to support these applications. Propulsion systems are primarily divided into two main categories. Chemical propulsion systems benefit from high thrust to perform impulsive …
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Lunar Robotic Precursor Missions Using Electric Propulsion
A trade study is carried out for the design of electric propulsion based lunar robotic precursor missions. The focus is to understand the relationships between payload mass delivered, electric propulsion power, and trip time. The results are compared against a baseline system using chemical …
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A Homegrown DSMC-PIC Model for Electric Propulsion
<p>Powering spacecraft with electric propulsion is becoming more common, especially in CubeSat-class satellites. On account of the risk of spacecraft interactions, it is important to have robust analysis and modeling tools of electric propulsion engines, particularly of the plasma plume. The …
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Fundamental Configuration Optimisation of Aircraft with Electric Propulsion
Electric propulsion has the potential to induce a paradigm shift in how aircraft perform, provided the same shift occurs in their design. Improvements to conventional aircraft have reduced CO2 emissions per passenger kilometre by, on average, 3.8% per year since 1960, but these incremental …
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Outside the hull electric propulsion for a submarine
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1990.
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A submarine electric propulsion system with large hub propeller
… Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Evaluation and comparison of electric propulsion motors for submarines
… Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Systems analysis of an astrophysics mission utilizing electric propulsion
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Nuclear electric propulsion : assessing the design of Project Prometheus.
The high fuel efficiency of electric propulsion makes it a viable alternative for long-distance space travel. Project Prometheus was a NASA-led project that sought to demonstrate that distant electric propulsion missions were achievable by planning an expedition to characterize the Jovian moons of …
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Emission spectroscopy for the study of electric propulsion plasmas
Typical electric propulsion devices rely on the acceleration of highly ionized plasmas to produce thrust at specific impulses unattainable with state-of-the-art chemical systems. This thesis examines the use of a miniaturized Helicon plasma source for an open-ended, electrode-less, cathode-less …
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Characterization of a green electric solid propellant for electric propulsion
<p>"Electric solid propellants are advanced solid chemical rocket propellants that can be controlled (ignited, throttled and extinguished) through the application and removal of an electric current. These propellants are also being considered for use in ablative pulsed plasma thruster and multimode …
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On the Electric Propulsion/mission System: Energy, Constraints, and Characteristic Surfaces
Made available in DSpace on 2014-12-10T23:36:45Z (GMT). No. of bitstreams: 1 7511527.pdf: 3739836 bytes, checksum: 6f2a132813a740f94f2f7bf7607e6b07 (MD5) Previous issue date: 1974
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Modeling and simulation of a CubeSat with dual electric propulsion systems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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Design, development and evaluation of a distributed electric propulsion testbed aircraft
… technology readiness level of a distributed electric propulsion (DEP) based control system. The primary objectives of this work were to experimentally characterize the propulsion-airframe interactions inherent to DEP vehicles to aid in modeling and to explore and validate the use of DEP to …
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Power conversion and scaling for vanishingly small satellites with electric propulsion
The development of ion electrospray propulsion systems (iEPS) as integrated microelectromechanical systems (i.e. MEMS) effectively miniaturizes propulsion for nanosatellites. Current iEPS thrusters consist of arrays of ion emitters, with a thruster for CubeSat application consisting of hundreds of …
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Development of a Parallel Electrostatic PIC Code for Modeling Electric Propulsion
This thesis presents the parallel version of Coliseum, the Air Force Research Laboratory plasma simulation framework. The parallel code was designed to run large simulations on the world fastest supercomputers as well as home mode clusters. Plasma simulations are extremely computationally intensive …
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