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Showing 1 to 20 of 41 for “"Hall Thruster"”.
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Numerical models of Hall thruster ionization oscillations
… thesis, low frequency ionization oscillations in Hall thrusters resembling the breathing mode are studied through computational simulation. The relationship between wall erosion and discharge current oscillations is analyzed using particle-in-cell simulation, and a series of parametric simulations …
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Hybrid-PIC modeling of Hall thruster plumes
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.
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Design of a miniaturized Hall thruster for microsatellites
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Theoretical and experimental investigation of Hall thruster miniaturization
… in the area of formation flight. Miniaturized Hall thrusters have been identified as a candidate for lightweight, high specific impulse propulsion systems that can extend mission lifetime and payload capability. A set of scaling laws was developed that allows the dimensions and operating …
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Modeling of Hall thruster lifetime and erosion mechanisms
Hall thrusters and other types of electric propulsion have become a tempting alternative to traditional chemical propulsion systems for in-space applications due to the high specific impulses (Isp) they provide. Large Isp translates to a highly desirable mass savings and system trades show that …
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Experimental and theoretical characterization of a Hall thruster plume
Despite the considerable flight heritage of the Hall thruster, the interaction of its plume with the spacecraft remains an important integration issue. Because in-flight data fully characterizing the plume in the space environment are currently unavailable, laboratory measurements are often used to …
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Continuous-wave cavity ring down spectroscopy sensor for Hall thruster erosion measurement
Hall thruster and other Electric propulsion (EP) devices have become appealing alternatives to traditional chemical propulsion thrusters for space applications due to this high specific impulse (Isp), which allows high fuel efficiency. However, the uncertainty of the lifetime for Hall thruster …
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Instrument development and plasma measurements on a 200-watt Hall thruster plume
… instruments were developed and the BHT-200 Hall thruster plume was characterized in order to support ongoing computational plume models. The instruments included a Faraday probe to measure current density, a hot emissive probe to measure plasma potential, and a cold Langmuir probe to measure …
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Computational modeling of a Hall thruster plasma plume in a vacuum tank
Hall thrusters have become a tempting alternative to traditional chemical propulsion systems due to the great mass savings they provide through high specific impulses. However, a major stumbling block to their widespread integration is uncertainty about the thruster plume's interaction with …
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Performance testing and internal probe measurements of a high specific impulse Hall thruster
The BHT-1000 high specific impulse Hall thruster was used for performance testing and internal plasma measurements to support the ongoing development of computational models. The thruster was performance tested in both single and two stage anode configurations. In the single stage configuration, …
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Development of a model for the near-exit plume of a Hall thruster
… electron behavior in the near-exit plume of a Hall thruster. The model provides 3D results and allows to study the azimuthal asymmetry induced by the hollow cathode. The model is composed by the charge and energy conservation equations and is intended to solve for the electrostatic potential …
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Instruments design and testing for a Hall thruster plume experiment on the space shuttle
The Electric Thruster Environmental Effects Verification 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 …
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Advances in fully-kinetic PIC simulations of near-vacuum Hall thruster and other plasma systems
… numerically modeled the near-anode region of a Hall thruster in attempts to better understand the associated physics of thruster operation. Originally, simulations assumed a continuum approximation for electrons and used magnetohydrodynamic fluid equations to model the significant processes. …
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Validation of the DRACO Particle-in-Cell Code using Busek 200W Hall Thruster Experimental Data
… data from an AFRL experiment using a Busek 200 W Hall Thruster. DRACO is a PIC code that models particles kinematically while using finite differences schemes to solve the electric potential and field. The DRACO code has been recently modified to improve simulation results, functionality and …
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Issues regarding a complete computational model of a Hall thruster from the acceleration channel through the plume
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
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Improvements to a fully kinetic Hall thruster simulation code and characterization of the cylindrical cusped field thruster
… of the operation of miniaturized 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 …
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