Abstract
By analyzing the gas-liquid mixing phenomenon in the thruster pipeline at the end of the service life of geostationary satellite, it is found that the gas in the pipeline leads to insufficient propellant combustion and unstable thrust output, which brings great difficulties to the orbit control of satellite. Aiming at the problem of thrust instability caused by gas-liquid mixing in the process of geostationary satellite orbit control, a joint orbit control method of normal mode + station keeping mode is proposed, which effectively solves the problem of deorbit at the end of the life of geostationary satellite in actual on orbit operation.
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