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Proceedings Paper

Structural considerations for fabrication and mounting of the AXAF HRMA optics
Author(s): Lester M. Cohen; Lawrence J. Cernoch; Gary Matthews; Michael A. Stallcup
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Paper Abstract

The large, thin-walled grazing incidence X-ray optics for NASA's Advanced X-ray Astrophysics Facility (AXAF) present a significant challenge to maintain figure during fabrication, metrology, and final assembly. The largest of the X-ray optics is 1 m long, 1.2 m in diameter, only 23 mm thick and weighs 225 kg. Conical shells of this size and stiffness present particularly difficult mounting problems because of their local flexibility and extreme sensitivity to small loads caused by differences in thermal expansion and one-g effects. Support methods that minimize the optics distortion during fabrication, metrology and launch configuration is presented. We describe the important role that finite element modeling and breadboard testing play in determining the performance of the support structures and that of material effects such as epoxy shrinkage and moisture desorption.

Paper Details

Date Published: 1 October 1990
PDF: 16 pages
Proc. SPIE 1303, Advances in Optical Structure Systems, (1 October 1990); doi: 10.1117/12.21502
Show Author Affiliations
Lester M. Cohen, Smithsonian Institution Astrophysical Observatory (United States)
Lawrence J. Cernoch, Hughes Danbury Optical Systems, Inc. (United States)
Gary Matthews, Eastman Kodak Co. (United States)
Michael A. Stallcup, NASA/Marshall Space Flight Ctr (United States)

Published in SPIE Proceedings Vol. 1303:
Advances in Optical Structure Systems
John A. Breakwell; Victor L. Genberg; Gary C. Krumweide, Editor(s)

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