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Proceedings Paper

Microdynamics of a precision deployable optical truss
Author(s): Lisa M. R. Hardaway; Lee D. Peterson
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Paper Abstract

This paper presents the results of an experimental study of the nanometer-level mechanics of a precision deployable structure. The test article is a single bay of a deployable truss, which has both a high structural efficiency (stiffness to mass ratio), and high packaging efficiency. Illustrative data are presented which assess the suitability of the test article for use as an optical support structure, or optical bench. The results show new and unusual microdynamics, namely viscoelasticity and harmonic distortion. However, the structure otherwise exhibits an elastic, stable response within the nanometer-level resolution of the test apparatus. These results are the first experimental evidence that a high efficiency, joint dominated deployable structure might be suitable for optical applications. To the extent this supposition holds true for other structures, these results may have significant implications for the architecture of planned deployable optical spacecraft missions.

Paper Details

Date Published: 29 October 1999
PDF: 12 pages
Proc. SPIE 3785, Advanced Telescope Design, Fabrication, and Control, (29 October 1999); doi: 10.1117/12.367604
Show Author Affiliations
Lisa M. R. Hardaway, Univ. of Colorado/Boulder (United States)
Lee D. Peterson, Univ. of Colorado/Boulder (United States)

Published in SPIE Proceedings Vol. 3785:
Advanced Telescope Design, Fabrication, and Control
William Roybal, Editor(s)

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