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Power Budget Analysis for High Altitude AirshipsThe 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.
Document ID
20060012139
Acquisition Source
Langley Research Center
Document Type
Other
Authors
Choi, Sang H. (NASA Langley Research Center Hampton, VA, United States)
Elliott, James R. (NASA Langley Research Center Hampton, VA, United States)
King, Glen C. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2006
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
SPIE Paper 6219-12
Meeting Information
Meeting: SPIE Defense and Security Symposium 2006
Location: Orlando, FL
Country: United States
Start Date: April 17, 2006
End Date: April 21, 2006
Sponsors: International Society for Optical Engineering
Funding Number(s)
WBS: WBS 581.02.08
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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