Propellant Influence on Electromagnetic Environment Generated by Stationary Plasma Thrusters

A. P. Plokhikh; Плохих А. П.; N. A. Vazhenin; Важенин Н. А.; D. V. Merkurev; Меркурьев Д. В.

doi:10.31857/S0023420623700140

Propellant Influence on Electromagnetic Environment Generated by Stationary Plasma Thrusters

Authors: Plokhikh A.P.¹, Vazhenin N.A.¹, Merkurev D.V.¹
Affiliations:
1. Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute, 125080, Moscow, Russia
Issue: Vol 61, No 5 (2023)
Pages: 393-399
Section: Articles
URL: https://ruspoj.com/0023-4206/article/view/672612
DOI: https://doi.org/10.31857/S0023420623700140
EDN: https://elibrary.ru/HJLCFG
ID: 672612

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Abstract

Possible aspects of violation of the functional safety of spacecraft in terms of electromagnetic compatibility with electric rocket thrusters in their work on alternative working substances are considered. The procedure of experimental determination of spectral–time characteristics of own electromagnetic radiation of laboratory model of stationary plasma thruster SPT-70 developed by the Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute is described. Measurements of noise emissions were carried out on a vacuum installation with a “radiotransparent” compartment and a shielded echo-free camera in the frequency range of 1–12 GHz for typical discharge capacities (600, 800, and 1000 W), vertical and horizontal polarization, and various working substances used (krypton and xenon). The conducted studies have allowed obtaining new comparative results of the assessment of spectral characteristics of SPT-70 radiation for standard modes and prospective working bodies within the orthogonal polarization bases. The new results should include information about the radiation characteristics of SPT-70 in the time area. It is shown that the transition from xenon to krypton retains the pulsed nature of the radiation of a stationary plasma thruster, leading not only to an increase in the amplitude of pulses, but also to an increase in the frequency of repetition of “bursts” and an increase in their duration, which requires additional measures to ensure electromagnetic compatibility in order to preserve the functional safety of the spacecraft.

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