The Cluster fleet was launched in 2000 to investigate the magnetic interaction between Sun and Earth. Originally planned to last until beginning of 2003, the mission is now approved until end 2009. The Silver Cadmium batteries of the four spacecraft are well beyond their design life and some have started to fail. To keep the batteries operational as long as possible and to respond to their performance degradation, the way of operating the 20 batteries has evolved drastically over the years. This paper is presenting the evolution of the batteries through the eight years of mission, including the anomalies that characterize their end of life. Significant details are given about the evolution of the Battery management strategy inside and outside eclipse season. Finally, the impact of the battery capacity degradation on the eclipse operations is addressed.
Cluster spacecraft batteries through the 2nd mission extension
Die Cluster-Raumfahrzeug-Batterien während der zweiten Verlängerung der Mission
2008
10 Seiten, 5 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Cluster Spacecraft Batteries through the 2^n^d Mission Extension
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