AbstractA new approach to the diagnostics of operating stationary plasma thruster (SPT) in flight is considered. Plasma-emitted electromagnetic waves in the band of 104– generated in SPT are proposed as a diagnostic means. An antenna placed outside the thruster will easily sense them. Particular attention is paid to electron drift oscillations, which are facile to detect and identify at any operation mode. Dependence of their spectra on the electric field configuration in the discharge is deduced, based on the theoretical model of the electron-drift instability presented in the paper. An algorithm that solves the inverse problem, i.e. restores the electric potential distributions from spectra, is also presented.
Noncontact emergency diagnostics of SPT in flight
Acta Astronautica ; 55 , 2 ; 109-119
2004-04-05
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Noncontact emergency diagnostics of SPT in flight
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