Segmented wall-less hall thruster

Simmonds, Jacob; Raitses, Yevgeny

Segmented wall-less hall thruster

Patent · Tue Jul 30 04:00:00 EDT 2024

OSTI ID:2542446

Simmonds, Jacob; Raitses, Yevgeny

Disclosed is a miniaturized plasma propulsion device with minimized surface area of the thruster walls exposed to the plasma and, as a result, reduced plasma-surface interactions including a set of segmented electrodes to facilitate the following improvements compared to relevant existing technologies: 1) control of the plasma flow including focusing of the plasma plume 2) increase of the thrust 2) reduction of inefficiencies associated with the electron cross field current, and 3) mitigation of low frequency oscillations. The electrodes affect all these actions when a DC or modulated voltage is applied to one or all of them with the same or different amplitudes, with the same or different frequencies or phases which are all optimized to realize the best performance through changes in the acceleration and/or ionization regions. In addition, the applied voltage to the main electrodes may also be modulated.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC02-09CH11466

Assignee:: The Trustees of Princeton University (Princeton, NJ)

Patent Number(s):: 12,049,878

Application Number:: 17/896,651

OSTI ID:: 2542446

Country of Publication:: United States

Language:: English

References (64)

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