FIELD: engines and pumps.
SUBSTANCE: system to control ion engines has two power control devices, four ion motors and two switching units . One switching unit of switches is connected to two power control devices and with two of four ion motors. Another switching unit is connected to said two power control devices and with other two ion engines. Each switching unit has first and second switching states which may be selected to enable power supply by any device of power supply control to any ion engine from the first to fourth ones. Each switching unit has a hollow shaft made rotatable and driven by a stepper motor. The ion engine comprises a discharge anode, a discharge cathode, an electrode of a discharge maintenance device, a discharge heater, a neutralizer cathode, a neutralizer heater, screen, accelerator and moderator grids.
EFFECT: improved reliability of the switching means.
15 cl, 17 dwg
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