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Methods for Characterizing the Reliability of Deployable Modules for Large Optical Reflectors

Hogstrom, Kristina and Pellegrino, Sergio (2016) Methods for Characterizing the Reliability of Deployable Modules for Large Optical Reflectors. In: 3rd AIAA Spacecraft Structures Conference. AIAA , Reston, VA, Art. No. 2016-2164. ISBN 978-1-62410-394-0.

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The In-Space Telescope Assembly Robotics (ISTAR) project has proposed an architecture for a large robotically-assembled telescope in space, comprised of many deployable truss modules. The truss modules are based on the Pactruss deployment scheme and are equipped with Rolamite tape spring hinges. Fabrication and assembly errors that arise from bulk manufacturing the modules may make the deployment unreliable. A simulation toolkit has been developed to characterize the deployment behavior of the module in the presence of such errors. This paper first outlines the details of the toolkit, including the truss model, the Rolamite hinge model, and the simulation methodology. It then describes the experiment designed to validate the toolkit. A module was constructed and deployed while tracking the displacements of a select node and the rotations of the Rolamite hinges. The measured shape of this module was recreated in the simulation model and the same parameters were obtained. It was found that the experimental and simulated nodal displacements matched within 10%. The experimental hinge behavior was generally captured in the simulation, with some discrepancies in the latching of one hinge. The possible causes for the discrepancies and ongoing work to improve the results are discussed in the paper.

Item Type:Book Section
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Pellegrino, Sergio0000-0001-9373-3278
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Additional Information:© 2016 AIAA. This work was supported by the NASA Space Technology Research Fellowship #NNX13AL67H, with the help and mentorship of Erik Komendera, John Dorsey, and Bill Doggett at NASA Langley Research Center and Stuart Shaklan at the Jet Propulsion Laboratory. Many thanks to Isabelle Phinney for her help with setting up experiments.
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NASA Space Technology Research FellowshipNNX13AL67H
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AIAA PaperAIAA 2016-2164
Record Number:CaltechAUTHORS:20160930-132028713
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Official Citation:Kristina Hogstrom and Sergio Pellegrino. "Methods for Characterizing the Reliability of Deployable Modules for Large Optical Reflectors", 3rd AIAA Spacecraft Structures Conference, AIAA SciTech, (AIAA 2016-2164)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70701
Deposited By: SWORD User
Deposited On:03 Oct 2016 19:05
Last Modified:03 Oct 2019 16:00

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