Results 151 to 160 of about 6,632 (182)

Electron Transport Modeling in Hall-Effect Thrusters

42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006
One of the most interesting phenomena in Hall-effect thrusters is the anomalous electron transport. Experimental investigations show that the electron transport coefficient along the thruster axis direction is much greater than the electron transport coefficient that we obtain through the classical electron-transport model.
DE MARCO E. A, ANDRENUCCI, MARIANO
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Kinetic effects in hall plasma thrusters

2010 Abstracts IEEE International Conference on Plasma Science, 2010
The plasma-wall interaction in the presence of strong secondary electron or thermionic emission has been studied theoretically and experimentally both as a basic phenomenon and in relation to numerous plasma applications such as, for example, fusion devices and plasma propulsion. For Hall thrusters, existing fluid models predict that secondary electron
Yevgeny Raitses, Igor Kaganovich, Alexander Khrabrov, Leonid A. Dorf, Nathaniel J. Fisch, Dmytro Sydorenko, Andrei Smolyakov   +6 more
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Non-invasive Hall current distribution measurement in a Hall effect thruster

Review of Scientific Instruments, 2015
A means is presented to determine the Hall current density distribution in a closed drift thruster by remotely measuring the magnetic field and solving the inverse problem for the current density. The magnetic field was measured by employing an array of eight tunneling magnetoresistive (TMR) sensors capable of milligauss sensitivity when placed in a ...
Carl R, Mullins, Casey C, Farnell, Cody C, Farnell, Rafael A, Martinez, David, Liu, Richard D, Branam, John D, Williams   +6 more
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Physics, simulation and diagnostics of Hall effect thrusters

Plasma Physics and Controlled Fusion, 2008
This paper presents recent efforts to better understand and quantify charged particle transport in Hall effect thrusters (HETs). Particle-in-cell (PIC) models, hybrid models, laser induced fluorescence (LIF) measurements and collective scattering (CS) experiments are combined to get a better insight into anomalous electron transport in HETs and to ...
Adam, J.C., Boeuf, Jean-Pierre, Dubuit, Nicolas, Dudeck, M., Garrigues, Laurent, Gresillon, D., Heron, A., Hagelaar, Gerjan, Kulaev, V., Lemoine, N., Mazouffre, S., Perez-Luna, J., Pisarev, V., Tsikata, S.   +13 more
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Hall Effect on the Magnetoplasmadynamic Thruster Flowfields

38th Plasmadynamics and Lasers Conference, 2007
The influence of the Hall effect on the current distribution and the plasma flow is investigated using two-dimensional numerical simulation for a self-field MagnetoPlasmaDynamic (MPD) thruster consisting of a short cathode and a flared anode. We focus on the analysis of transitional behaviors between electrothermal and electromagnetic acceleration ...
Kenichi Kubota, Ikkoh Funaki, Yoshihiro Okuno   +2 more
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HALL-EFFECT THRUSTER ST-25 WITH PERMANENT MAGNET

Journal of Rocket-Space Technology, 2021
Results of development and experimental tests of Hall-effect Thruster ST-25 are presented. This thruster is intended for application on small space vehicles. With the purpose of decrease of input electric power in the magnetic system of the thruster a permanent magnet is applied. The permanent magnet is located at the base of the central magnetic core.
Dmitry Konstantinovich Voronovsky, Sergey Nikolaevich Kulagin, Victor Vladimirovich Maslov, Olexandr Nikolaevich Petrenko, Stanislav Victorovich Tolok   +4 more
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Modeling of double stage Hall effect thruster

IEEE Transactions on Plasma Science, 2005
Hall effect thrusters (HETs) are ion sources used for satellite station keeping and orbit raising. In Single Stage HETs, the same electric field is responsible for electron heating and ion acceleration. We present a new HET concept where ionization and acceleration are separated in two different stages. This double stage HET allows for a more versatile
C. Boniface, G.J.M. Hagelaar, L. Garrigues, J.P. Boeuf, M. Prioul   +4 more
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Azimuthal Spoke Propagation in Hall Effect Thrusters

IEEE Transactions on Plasma Science, 2015
Spokes are azimuthally propagating perturbations in the plasma discharge of Hall effect thrusters (HETs) that travel in the $E \times B$ direction. The mechanisms for spoke formation are unknown, but their presence has been associated with improved thruster performance in some thrusters motivating a detailed investigation.
Sekerak, Michael J., Longmier, Benjamin W., Gallimore, Alec D., Brown, Daniel L., Hofer, Richard R., Polk, James E.   +5 more
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On Scaling of Hall Effect Thrusters

IEEE Transactions on Plasma Science, 2015
The field of application of Hall effect thrusters (HETs) is constantly expanding toward increased power and specific impulse and also toward reduced power. The modern level of plasma simulations does not allow accurate prediction of a thruster performance in advance.
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Elementary Scaling Relations for Hall Effect Thrusters

Journal of Propulsion and Power, 2011
Various sizing methodologies are currently available to get a first estimate of the required Hall effect thruster dimensions for a given input power and a corresponding thrust and specific impulse level. In this work, a semiempirical approach to compute the three characteristic thruster dimensions, i.e., the channel length, the channel width, and the ...
Käthe Dannenmayer, Stéphane Mazouffre
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