A modular geoplatform concept for Intelsat VII and other applications

The paper describes a new GEO platform design with features of modularity and integrated transfer propulsion, optimized for launch by the Space Shuttle. Technical results concerning the GEO platform and its performance in terms of communication payload and mission lifetime are presented. The reference system design has a total mass of 14.3 Mg (metric tons) including 10.9 Mg transfer propellant mass; the initial mass in GEO is 3.4 Mg allowing for 400-700 kg communication equipment, depending on power level, eclipse capability requirements (batteries), and mission lifetime. As examples, the platform design is shown with a typical Intelsat VII payload, a German national services payload (TVBS and 20/30 GHz data service), and a multinational direct TV-broadcasting payload.