Hall thruster with grooved walls

Li, Hong; Ning, Zhiliang; Yu, Daren

doi:10.1063/1.4793561

Cited by 37 publications

(12 citation statements)

References 14 publications

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“…The recorded time series data were then numerically processed to obtain the averaged discharge current. The thrust T was measured with a three-wire torsion pendulum thrust stand [30]. The measurement principle involves equalizing the thrust to the rotation angle of the torsion platform and then converting the rotation angle into the linear displacement of a laser, so that this displacement is directly proportional to the thrust.…”

Section: Experimental Apparatusmentioning

confidence: 99%

The influence of the inclination of strong magnetic field lines on the performance and plume divergence of a magnetically shielded Hall thruster

Liu

Zhong

et al. 2020

J. Phys. D: Appl. Phys.

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It has been recognized that the application of magnetic shielding technology deteriorates the plume divergence efficiency of a Hall thruster. To try to alleviate this effect, three magnetic shielding configurations with different inclination directions of the lines of force in the strong magnetic field region are designed via the introduction of a peripheral coil surrounding the thruster body, and their influence on the performance and plume divergence are experimentally evaluated in this study. The measured results show that the performance and plume distribution vary significantly with the change in the inclination direction of the lines of force. Particularly, different to the unshielded Hall thruster that exhibits the best performance and minimal divergence when the strong magnetic field lines are non-inclined (perpendicular to the thruster axis), the magnetically shielded Hall thruster has the largest thrust and the smallest divergence angle when the strong magnetic field lines are inclined inward. Further theoretical research indicates that this is mainly due to the change in the ion acceleration process under the magnetic shielding discharge. This study is significant and instructive for the optimized design of magnetically shielded Hall thrusters.

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Section: Experimental Apparatusmentioning

confidence: 99%

The influence of the inclination of strong magnetic field lines on the performance and plume divergence of a magnetically shielded Hall thruster

Liu

Zhong

et al. 2020

J. Phys. D: Appl. Phys.

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“…Its absolute accuracy is 0.4 mN. [17] The discharge current I d is measured with a Tektronix TCP2020 current probe, and acquired and recorded using a Yokogawa DL850E ScopeCorder; the recorded time series data are then numerically processed to obtain the mean and peak-to-peak values of the discharge current. Besides, the anode efficiency η a is calculated using Eq.…”

Section: Experimental Design and Apparatusmentioning

confidence: 99%

Experimental and numerical investigation of a Hall thruster with a chamfered channel wall

Xia

Mao³

et al. 2018

Chinese Phys. B

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A discharge channel with a chamfered wall not only has application in the design of modern Hall thrusters, but also exists where the channel wall is eroded, and so is a common status for these units. In this paper, the laws and mechanisms that govern the effect of the chamfered wall on the performance of a Hall thruster are investigated. By applying both experimental measurement and particle-in-cell simulation, it is determined that there is a moderate chamfer angle that can further improve the optimal performance obtained with a straight channel. This is because the chamfering of the wall near the channel exit can enhance ion acceleration and effectively reduce ion recombination on the wall, which is favorable to the promotion of the thrust and efficiency. However, the chamfer angle should not be too large; otherwise, both the density of the propellant gas and the distribution of the plasma potential in the channel are influenced, which is undesirable for efficient propellant utilization and beam concentration. Therefore, it is suggested that the chamfer shape of the channel wall is an important factor that must be carefully considered in the design of Hall thrusters.

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“…The thrust measuring resolution was 0.3 mN and precision was about 0.5% at 100 mN and 2% at 20 mN. The schematic of the torsion pendulum can be found in [22], figure 5.…”

Section: Thrust Standmentioning

confidence: 99%

Effect of azimuthal diversion rail on an ATON-type Hall thruster

Zhang

Wei

Han

et al. 2017

J. Phys. D: Appl. Phys.

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A newly designed azimuthal diversion rail (ADR) is studied and used to enhance the ionization process in an ATON-type Hall thruster. The diversion rail efficiently reduces the neutral flow axial velocity, and hence, increases the resistance time of atoms in the discharge channel of the Hall thruster. Thrust performances, in terms of thrust, anode efficiency and ion beam divergence, are found to be improved because of the application of the diversion rail, especially at low mass flow rate conditions. Experiment results reveal that the ADR increases the mass utilization under insufficient mass flow rate operating conditions. The design of the ADR broadens the efficient operating range of Hall thrusters and has significant contribution to multi-mode Hall thruster development.

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Hall thruster with grooved walls

Cited by 37 publications

References 14 publications

The influence of the inclination of strong magnetic field lines on the performance and plume divergence of a magnetically shielded Hall thruster

The influence of the inclination of strong magnetic field lines on the performance and plume divergence of a magnetically shielded Hall thruster

Experimental and numerical investigation of a Hall thruster with a chamfered channel wall

Effect of azimuthal diversion rail on an ATON-type Hall thruster

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