2013
DOI: 10.1063/1.4793561
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Hall thruster with grooved walls

Abstract: Axial-oriented and azimuthal-distributed grooves are formed on channel walls of a Hall thruster after the engine undergoes a long-term operation. Existing studies have demonstrated the relation between the grooves and the near-wall physics, such as sheath and electron near-wall transport. The idea to optimize the thruster performance with such grooves was also proposed. Therefore, this paper is devoted to explore the effects of wall grooves on the discharge characteristics of a Hall thruster. With experimental… Show more

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Cited by 37 publications
(12 citation statements)
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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 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%
“…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%
“…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%