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A Technique to Predict Clefting of Lobed Super-Pressure Balloons

Pellegrino, S. and Deng, X. (2012) A Technique to Predict Clefting of Lobed Super-Pressure Balloons. In: 11th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2011-6830. ISBN 978-1-60086-941-9. https://resolver.caltech.edu/CaltechAUTHORS:20190918-090257435

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Abstract

Lobed super-pressure balloons have shown a tendency to deploy into unexpected asymmetric shapes, hence their design has to strike a balance between the lowest stresses achieved by increasing lobing and the risk of incomplete deployment. This paper proposes a computational clefting test that can be applied to any given balloon design. The test consists in setting up the balloon in its symmetrically inflated configuration, then breaking the symmetry of this shape by artificially introducing a clefting imperfection, and finally determining the equilibrium shape of the balloon. Wrinkling of the balloon film and frictionless contact are included in the computation. The clefting test is applied successfully to three 27 m diameter super-pressure balloons that have been tested indoors by NASA, of which one had remained clefted when it was inflated and the other two had deployed completely.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2011-6830DOIArticle
ORCID:
AuthorORCID
Pellegrino, S.0000-0001-9373-3278
Additional Information:© 2012 American Institute of Aeronautics and Astronautics. Published Online: 4 Jun 2012.
Group:GALCIT
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AIAA Paper2011-6830
Record Number:CaltechAUTHORS:20190918-090257435
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190918-090257435
Official Citation:A Technique to Predict Clefting of Lobed Super-Pressure Balloons. Sergio Pellegrino and Xiaowei Deng. 11th AIAA Aviation Technology, Integration, and Operations. (ATIO) Conference. September 2011. https://doi.org/10.2514/6.2011-6830
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98710
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Sep 2019 19:57
Last Modified:03 Oct 2019 21:43

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