In Flight Results of Spacecraft Charging Investigation for Russian High Altitude Satellites

Physics

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Scientific paper

Our research program on spacecraft charging based on using of serial satellites as platforms for the experiments. Additional equipment for spacecraft charging experiments was mounted on the serial communication and navigation satellites GORIZONT, GLONASS, GALS and EXPRESS designed by Scientific Production Association of Applied Mechanics (NPO PM). Electrostatic field strength outside the spacecraft body is the major parameter that we measured in those experiments. Value of electric field strength between 20-30 kV/m was indicated during magnetosphere substorm and Earth eclipse. Disturbances of spacecraft charging caused by plasma thruster has been detected for GALS-12, EXPRESS-11 and GORIZONT-30 spacecraft. The value of electric field strength in flight experiments is correlated with magnetosphere activity based on Ap, Cp-indexes. In this paper we present a short review of the results of Russian high altitude spacecraft charging investigation.

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