Scaling of Magnetic Circuit for Magnetically Shielded Hall Effect Thrusters

Lopedote, Erica; Panelli, Mario; Battista, Francesco

doi:10.1007/s42496-023-00152-x

Cited by 1 publication

(2 citation statements)

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“…A preliminary assessment of HYPICFLU2 was presented in Ref. [27]. Here, the main results of the last validation test are presented.…”

Section: Hypicflu2 Validationmentioning

confidence: 99%

“…The same numerical settings and grids presented in Refs. [22,27] were used for the calculation reported here. Figure 6 reports the time-averaged plasma properties along the channel centerline (i.e., the line through the middle of the channel; radial position = 42.5 mm), namely, axial ion velocity, neutral and plasma density, ionization rate, electron temperature, and plasma potential.…”

Section: Hypicflu2 Validationmentioning

confidence: 99%

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Numerical Modeling of Erosion in Hall Effect Thrusters

Passet,

Panelli,

Battista

2024

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The erosion of the accelerating chamber walls is one of the main factors limiting the operational life of Hall effect thrusters (HETs), and it is mainly related to the sputtering of ceramic walls due to the impacting energetic ion particles. The erosion phenomenon is investigated by means of a numerical model that couples the plasma model HYPICFLU2, used for evaluating the local distributions of ion energies and incidence angles, and a sputtering model specific for the xenon–Borosil pair, which is the most used in HETs application. The sputtering yield model is based on the measurements by Ranjan et al. that are improved with a linear factor to include wall temperature effect, recently studied by Parida et al. The experimental eroded profiles of SPT100 walls are selected as benchmark. The results show that there is a decrease in erosion speed with time, in accordance with experimental measurements, but the model underestimates, by about 50–60%, the erosion at the channel exit, which suggests a stronger dependence of sputter yield on surface temperature. Thus, the need for new experimental measurements of sputtering in the range of impact energy, angle, and wall temperature, respectively, of 10–250 eV, 0–85°, 30–600 °C, arises.

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“…A preliminary assessment of HYPICFLU2 was presented in Ref. [27]. Here, the main results of the last validation test are presented.…”

Section: Hypicflu2 Validationmentioning

confidence: 99%

Section: Hypicflu2 Validationmentioning

confidence: 99%