scholarly journals Studies of non-conventional configuration closed electron drift thrusters

2001 ◽  
Author(s):  
Y. Raitses ◽  
D. Staack ◽  
A. Smirnov ◽  
A. Litvak ◽  
L. Dorf ◽  
...  
Keyword(s):  
Electron Drift ◽  
Closed Electron

Experimental studies of iodine stationary plasma thruster

2019 ◽  
pp. 81-90
Author(s):  
Boris A. Sokolov ◽  
Pavel A. Shcherbina ◽  
Ivan B. Sishko ◽  
Aleksandr V. Shipovskiy Aleksandr ◽  
Aleksandr A. Lyapin ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Thermal Conditions ◽  
Economic Viability ◽  
Electron Drift ◽  
Experimental Facility ◽  
Operational Mode ◽  
Stationary Plasma Thruster ◽  
Stationary Plasma ◽  
Plasma Thruster ◽  
Closed Electron

The paper demonstrates the feasibility of using iodine as propellant for thrusters with closed electron drift and its economic viability. It describes a test setup for running experiments. It provides the results of experimental studies of the stationary plasma thruster using iodine as its propellant with xenon gas-passage hollow cathode, as well as of the operational mode of the thruster where a mixture of xenon and iodine is used. During tests gas dynamic and electrical properties of the thruster were analyzed. Thermal conditions in the iodine storage and supply system were studied. Conclusions were drawn on how the test object could be improved and upgraded. The paper describes the option to use a thermionic non-flow cathode as the compensator cathode for the operation of the iodine thruster. The paper provides the results of an experimental study of the prototype non-flow compensator cathode in diode mode. Based on the results of the studies an experimental facility was built for testing a thruster with non-flow compensator cathode. Key words: cathode, compensator cathode, thruster with closed electron drift, stationary plasma thruster, iodine.

Insight on closed electron drift thrusters obtained with a discharge shutter as diagnostic tool

2001 ◽  
Author(s):  
M. Prioul ◽  
A. Bouchoule ◽  
S. Roche ◽  
D. Pagnon ◽  
L.M. Magne ◽  
...  
Keyword(s):  
Diagnostic Tool ◽  
Electron Drift ◽  
Closed Electron

Transient phenomena in closed electron drift plasma thrusters: insights obtained in a French cooperative program

2001 ◽  
Vol 10 (2) ◽  
pp. 364-377 ◽  
Author(s):  
A Bouchoule ◽  
Ch Philippe-Kadlec ◽  
M Prioul ◽  
F Darnon ◽  
M Lyszyk ◽  
...  
Keyword(s):  
Electron Drift ◽  
Transient Phenomena ◽  
Cooperative Program ◽  
Plasma Thrusters ◽  
Closed Electron

scholarly journals A New Type of Plasma Accelerator with Closed Electron Drift

2018 ◽  
Vol 63 (2) ◽  
pp. 110
Author(s):  
I. V. Litovko ◽  
A. N. Dobrovolsky ◽  
L. V. Naiko ◽  
I. V. Naiko
Keyword(s):  
Hybrid Model ◽  
Kinetic Equations ◽  
Plasma Accelerator ◽  
Electron Drift ◽  
Operation Modes ◽  
Current Voltage ◽  
New Type ◽  
Insignificant Difference ◽  
Potential Gradients ◽  
Closed Electron

A new type of plasma accelerator with closed electron drift and open walls has been studied further. In particular, the current-voltage characteristics in various operation modes are obtained. Two operation modes, low- and high-current ones, with specific parameters are revealed. To make the earlier proposed physical mathematical model more adequate to the experiment, a hybrid model, in which the dynamics of neutrals and ions is described by kinetic equations, is applied. The distribution of the electric potential in the accelerating gap is numerically obtained. An insignificant difference between the potential distributions in the hydrodynamic and hybrid models consisting in higher potential gradients in the hybrid model is found.

scholarly journals INFLUENCE OF WALL SCATTERING EFFECT ON ELECTRONS GAS DYNAMICS PARAMETERS IN ELECTRIC PROPULSION THRUSTERS WITH CLOSED ELECTRON DRIFT

2021 ◽  
Author(s):  
Guo Zongshuai, ◽  
Huang Zhihao
Keyword(s):  
Mathematical Modeling ◽  
Gas Dynamics ◽  
Electric Propulsion ◽  
Electron Drift ◽  
Dense Gases ◽  
Equations Of Gas Dynamics ◽  
Hall Effect Thrusters ◽  
Ion Thrusters ◽  
The Common ◽  
Closed Electron

The analysis is represented of some works devoted to the mathematical modeling of processes in plasma-ion thrusters and Hall effect thrusters. It is shown that the common in these works is the use of approximate forms of the equations of gas dynamics, which are applicable to the description of relatively dense gases, but not to analyze the processes in the rarefied plasma of electric propulsion thrusters. As a result, the above mathematical models do not represent the processes that are significantly responsible for the values of the thruster operating parameters.Authors try to partially correct this drawback by insertion into the initial approximate forms of the equations written for a point in the plasma volume, the parameters that actually represent the boundary effects and should be written not in the equations of gas dynamics themselves, but in the boundary conditions for these equations.The most complete forms of the necessary equations are given in this paper. It is shown that it is necessary to take into account electrons thermal conductivity as well as at least one (radial-azimuth) component of viscosity tensor to describe the "wall scattering" effect.It is concluded that the most productive approach in mathematical modeling is to write the most complete forms of equations with their subsequent simplification – removing the terms responsible for the processes recognized on the basis of primary numerical estimates as such, which can be neglected.

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