Propulsion system with four modules for satellite orbit control and attitude control

A propulsion system for the orbital control of a satellite with terrestrial orbit travelling with a speed of displacement along an axis V tangential to the orbit, comprising two propulsion assemblies, fixed to the satellite, and facing one another with respect to the plane of the orbit, each of the propulsion assemblies comprising two propulsion modules;

• each of the propulsion modules successively including:
• a first motorized link for rotation about an axis parallel to the axis V,
• an offset arm, and
• a platen supporting a propulsion unit able to deliver a thrust oriented along an axis perpendicular to the axis V,
• the two propulsion modules of each propulsion assembly being linked to the satellite on either side and substantially at equal distances from a plane P perpendicular to the axis V passing through a centre of mass CM of the satellite,
• wherein at least one first motorized link provides an only motorized link of a respective propulsion module.