FIELD: space engineering. SUBSTANCE: thrust of the engine is a function of voltage and current of the anode proportional to the flow rate of the working fluid. The thrust is stabilized so that the product of the anode voltage and square of anode current is constant. The device has one stabilizing circuit only. The circuit consists of current and voltage pickups, two signal amplifiers, one of which is square-law amplifier, multiplier, comparator, source of reference voltage, and controller of supplying working fluid. The reference voltage is proportional to the square of the nominal thrust of the engine. EFFECT: improved accuracy of thrust stabilizing and simplified engine control. 3 cl, 1 dwg
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