Roscosmos showed unique engines for heavy satellites

Roscosmos showed unique engines for heavy satellites

At the Army-2022 International Military-Technical Forum, the Keldysh Center (part of Roscosmos) presented correction systems to heavy geostationary spacecraft based upon KM-75 Hall engines and ID-200KR ion engines.

The KM-75 engine created the correction system for heavy geostationary satellites. It is a first-world system that uses a Hall-type engine. This engine has an accelerating voltage of 810V, nearly three times greater than its foreign counterparts. Also, it saves up to 40% on working fluid (xenon). The KM75 engine has the highest specific impulse of all Hall engines. After a complete cycle of ground testing, the engine was confirmed to be a reliable resource.

The ID-200KR engine’s correction system for heavy geostationary satellites is the first domestic system based on an Ion engine. The ID-200KR engine offers a significant increase in a specific impulse when compared to Hall engines. Carbon-carbon composite material is a great way to extend the engine’s life.

These systems correct the spacecraft’s orbit in the “north-south” and “west–east” directions. A flow control unit, which is unique in terms of power consumption, weight, and overall dimensions, is used to supply the working fluid xenon.

Hall thruster is an electric rocket engine that is most commonly used. It uses an external magnetic field to generate a magnetic field. Positive plasma ions accelerate, and reactive thrust can be created when a potential difference between the anode and cathode is applied.

Roscosmos showed unique engines for heavy satellites
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