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Proceedings Paper

Power budget analysis for high altitude airships
Author(s): Sang H. Choi; James R. Elliott; Glen C. King
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Paper Abstract

The High Altitude Airship (HAA) has various potential applications and mission scenarios that require onboard energy harvesting and power distribution systems. The energy source considered for the HAA's power budget is solar photon energy that allows the use of either photovoltaic (PV) cells or advanced thermoelectric (ATE) converters. Both PV cells and an ATE system utilizing high performance thermoelectric materials were briefly compared to identify the advantages of ATE for HAA applications in this study. The ATE can generate a higher quantity of harvested energy than PV cells by utilizing the cascaded efficiency of a three-staged ATE in a tandem mode configuration. Assuming that each stage of ATE material has the figure of merit of 5, the cascaded efficiency of a three-staged ATE system approaches the overall conversion efficiency greater than 60%. Based on this estimated efficiency, the configuration of a HAA and the power utility modules are defined.

Paper Details

Date Published: 26 May 2006
PDF: 12 pages
Proc. SPIE 6219, Enabling Technologies and Design of Nonlethal Weapons, 62190C (26 May 2006); doi: 10.1117/12.663586
Show Author Affiliations
Sang H. Choi, NASA Langley Research Ctr. (United States)
James R. Elliott, NASA Langley Research Ctr. (United States)
Glen C. King, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 6219:
Enabling Technologies and Design of Nonlethal Weapons
Glenn T. Shwaery; John G. Blitch; Carlton Land, Editor(s)

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