First results from the Starshine 3 power technology experiment

Starshine 3 is principally a passive experiment measuring atmospheric density and does not need electrical power to complete its mission. The requirement for a highly reliable power system is therefore greatly reduced. This creates an excellent opportunity to test new power technologies. The Starshine 3 satellite has a power supply that uses triple-junction, GaInP/GaAs/Ge solar cells and rechargeable lithium-ion batteries. This satellite is the first to use both of these advanced technologies for a primary power system. In addition to the power system, several other PV related experiments are on board Starshine 3. The results from the first 3 months of operation are presented.