General model on which multiple-production satellite spacecraft are often based; infrastructure of a spacecraft, usually providing locations for the payload (typically space experiments or instruments); service module section of a satellite.
Taking up most of the room on the spacecraftbus, or chassis, is the German-developed eRosita system.
2
This would probably see an altimeter put on a spacecraftbus similar to the one being used on the forthcoming Cryosat mission.
3
It would provide them with "keep-alive" solar cell-generated electrical power, thermal control, course-correction propulsion, and other requirements typically provided by a throwaway spacecraftbus.