Computation of Partially Inflated Shapes of Stratospheric Balloon Structures
- Creators
- Deng, X.
-
Pellegrino, S.
Abstract
This paper studies the relationship between height, volume and stress distribution in a superpressure pumpkin balloon with the differential pressure applied to the balloon. Two different approaches are presented. A simple two-dimensional solution based on previous work and a novel, detailed finite element simulation that provides three-dimensional solutions are investigated. It is found that the finite element solution provides a much better agreement with experimental results for the case of a flat facet ULDB balloon. It is also found that a region of tensile hoop stress remains in the crown region of the balloon until the bottom pressure becomes negative. This region prevents the formation of clefts in the balloon and keeps its shape axisymmetric.
Additional Information
© 2008 by X. Deng and S. Pellegrino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. We thank the NASA ULDB team for their contribution to this research. In particular, we are grateful to Henry Cathey for kindly providing test data and Rodger Farley, Jim Rand and David Wakefield for helping us through numerous discussions This research was supported by the NASA Balloon Program Office (contract monitor Danny Ball).Attached Files
Accepted Version - DengAIAA2008.pdf
Files
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Additional details
- Eprint ID
- 102166
- Resolver ID
- CaltechAUTHORS:20200330-082659500
- NASA
- Created
-
2020-03-30Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- GALCIT
- Other Numbering System Name
- AIAA Paper
- Other Numbering System Identifier
- 2008-2133