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- W2319314471 abstract "The outcomes of numerical research of influence of the change of geometry of SPT digit channel on dynamics of a plasma flow and on the main output integral parameters of a thruster are represented in the paper. It's shown that the extension of a channel in the output part results in decreasing a flow of high -energy ions on walls in an output part of a channel and improving the integral characteristics of a thruster: a force of a thruster and its life time. It's shown the change of geometry of a digit channel by its extension in the output part is one from paths of increasing a thruster life time. INTRODUCTION The spent earlier numerical simulation of current of a plasma flow in a SPT digit channel has shown that in an output part of a channel the plasma flow diverges and causes destruction of ceramic walls limiting a channel and the speed of erosion of walls decreases with current of time at the expense of decreasing a flow of ions on walls near to an output edge of the accelerator that is there where the ions have energy E ~ lOOeV which has enough for destruction of walls [1]. Life time of a thruster in many respects also is determined by durability of a digit channel. Therefore one from paths of its increase is the change of geometry of a digit channel by its extension in the output part. The purpose of this paper is the numerical research of influence of change of geometry of a digit channel on dynamics of current of a plasma flow and on output parameters of a thruster force of a thruster, life time, and also research of a capability of management of these parameters by profiling of the SPT channel walls. l.THE DESCRIPTION OF THE MATHEMATICAL MODEL considered. Density of plasma even in a zone of ionization is rather insignificant: characteristic density of charged particles nj = 10 n -510nT 10 •=• 10 density of neutral atoms g= • m [2]. In these conditions in a volume of a channel the collisions an electron atom, and electrons with walls are dominating above all other kinds of collisions [2]:" @default.
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- W2319314471 date "1998-07-13" @default.
- W2319314471 modified "2023-09-26" @default.
- W2319314471 title "Numerical research of dynamics of stream in the stationary plasma thruster channel of a variable section" @default.
- W2319314471 doi "https://doi.org/10.2514/6.1998-3800" @default.
- W2319314471 hasPublicationYear "1998" @default.
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