"Comparative Analysis of Satellite Battery Technologies: A Cross-Sectio" by Andrew H. Chung

Date of Award

3-2024

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Systems Engineering and Management

First Advisor

Michael J. Brown, PhD

Abstract

Trends in costs for batteries incorporated in satellite electrical power systems (EPS) have been identified by Space Systems Command (SSC) within the Unmanned Space Vehicle Cost Model (USCM) database. A subset of pre-1980s data consisting of Nickel-Cadmium battery costs was excluded from battery cost estimating relationship (CER) development as a result of this determination. This research aims to ascertain the impacts of these trends on satellite cost estimating practices by assessing developments in battery costs over time, comparing normalized Nickel-Cadmium (NiCd) / NickelHydrogen (NiH2) / Lithium-Ion (Li-Ion) battery costs, identifying differences between the NiH2 and Li-Ion modern battery types, and proposing a strategy for handling battery cost data in CER development. Statistical tests employed to evaluate the exclusion of NiCd data produced strong evidence supporting this decision. Comparison tests between NiH2 and Li-Ion datasets demonstrated statistically similar trends providing justification to combine the two datasets for modeling purposes. The analysis of battery costs over time showed inconclusive results due to data limitations. Lastly, the tested hypothesis of a negative correlation between battery costs and technology maturity was not supported, challenging prevailing assumptions.

AFIT Designator

AFIT-ENV-MS-24-M-112

Comments

A 12-month embargo was observed for posting this work on AFIT Scholar.

Distribution Statement A, Approved for Public Release. PA case number on file.

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