Traditional space vehicle avionics design trades consider factors such as weight, power, reliability, performance, software complexity, and hardware costs. These factors are typically compared on a unit-to-unit basis without any causative relationships to the total space vehicle operating system. Traditionally, there is not a quantitative measure of the precedence between these factors in the selection process. For the OTV avionics study, a figure of merit (FOM) equation was developed that quantified the relationship between these factors and mission parameters (such as propellant delivery cost, and space station attendant manhour cost) for a total life cycle cost (LCC) comparison. The FOM equation was applied incrementally resulting in a curve having a minimal life cycle cost with a partial OTV redundancy. Some interesting results were obtained with this comprehensive approach.
OTV avionics and subsystems design utilizing life cycle cost techniques
Entwurf von Avionik und Subsystemen fuer Raumfahrzeuge unter Beruecksichtigung der Lebensdauerkosten
1986
8 Seiten, 3 Bilder, 10 Tabellen
Conference paper
English
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