The Keldysh Center, which is part of Roscosmos, at the Army-2022 International Military-Technical Forum presented correction systems for heavy geostationary spacecraft based on KM-75 Hall engines and ID-200KR ion engines.

As the press service of the state corporation notes, the correction system for heavy geostationary satellites based on the KM-75 engine is the first system in the world based on a Hall-type engine with an accelerating voltage of 810 V, which is almost three times higher than foreign analogues and provides savings of up to 40% of the working fluid (xenon). The KM-75 engine provides the highest specific impulse among Hall engines of this class. The engine went through a full cycle of ground experimental testing with full confirmation of the resource.

The correction system for heavy geostationary spacecraft based on the ID-200KR engine is the first domestic system of this type based on an ion engine. The ID-200KR engine provides a significant gain in specific impulse compared to Hall engines of this class. The use of carbon-carbon composite material can significantly increase the life of the engine.

These systems are designed to correct the spacecraft's orbit in the "north-south" and "west-east" directions. To supply the xenon working fluid to the engines, a flow control unit is used, which has unique characteristics in terms of power consumption, weight and overall dimensions.

The Hall thruster is one of the most common types of electric rocket engines, characterized by the presence of an external magnetic field. When a potential difference is applied between the cathode and the anode, positive plasma ions are accelerated and reactive thrust is created.

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