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Proceedings Paper

Development Of Lightweight, Glass Mirror Segments For The Large Deployable Reflector
Author(s): R. K. Melugin; J. H. Miller; J. R. P. Angel; P. A. A. Wangsness; R. E. Parks; D. A. Ketelsen
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Paper Abstract

Accomplishments in the development of lightweight, honeycomb-core, sandwich mirror blanks made of borosilicate and high-silica glasses at the University of Arizona for the Large Deployable Reflector program are described. In this paper, work spanning the last 2 years is reported, highlighting a new mirror blank fabrication technique that permits the fabrication of the honeycomb core integrally with the front and back plates of the blank in a single furnace cycle. Two types of mirror blanks made by this method, an off-axis, aspheric segment and a smaller Vycor circular piece, are described. The fabrication of two off-axis, aspheric mirror segments is also described. Cryogenic test results are included on the test of a 38-cm diameter, lightweight, honey-comb core, sandwich mirror made of Pyrex.

Paper Details

Date Published: 21 February 1986
PDF: 14 pages
Proc. SPIE 0571, Large Optics Technology, (21 February 1986); doi: 10.1117/12.950390
Show Author Affiliations
R. K. Melugin, NASA Ames Research Center (United States)
J. H. Miller, NASA Ames Research Center (United States)
J. R. P. Angel, University of Arizona (United States)
P. A. A. Wangsness, University of Arizona (United States)
R. E. Parks, University of Arizona (United States)
D. A. Ketelsen, University of Arizona (United States)

Published in SPIE Proceedings Vol. 0571:
Large Optics Technology
Gregory M. Sanger, Editor(s)

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