Hughes has updated its mathematical model that predicts the life of nickel cadmium batteries designed for geosynchronous orbit satellites. Our objectives were to predict voltages and battery life, obtain reliability estimates, and identify ways to design, build, and operate our batteries better. A statistical analysis technique called regression was used to analyze orbital data on second generation trickle-charged batteries. The model gives average cell discharge voltage as a function of design parameters, operating parameters, and time. The voltage model has the properties of providing a good fit to the data, good predictive capability, and agreement with known battery performance characteristics. Average cell discharge voltage can almost always be predicted to within 0.02 volts for up to 10 years. The results show that these batteries will operate reliably for 10 years.
Prediction model for life of nickel cadmium geosynchronous orbit satellite batteries
Modell fuer die Lebensdauervorhersage von Nickel-Cadmium-Batterien fuer geosynchrone Satelliten
1986
5 Seiten, 8 Bilder, 1 Tabelle, 14 Quellen
Conference paper
English
Advanced nickel-cadmium batteries for geosynchronous spacecraft
Tema Archive | 1988
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