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Ultra-Lightweight Borosilicate Gas-Fusion Mirror for Cryogenic TestingHextek Corporation fabricated a 250 mm diameter ultra-lightweight borosilicate mirror substrate for cryogenic testing at NASA MSFC XRCF facility in Huntsville AL under contract# H-34475D. The objectives of the program were to demonstrate that the Hextek Gas-Fusion technology is capable of meeting the 15kg/sq m areal density target required for future space missions, and to provide a demonstration substrate for NASA MSFC to finish and test at cryogenic temperature. This presentation reviews company background and capabilities, features and benefits of the Gas-Fusion technology, historical data on cryogenic performance of borosilicate glass showing near zero cte at 30-35 degrees Kelvin, design and fabrication results of the 250 mm 15kg/sq m areal density substrate, and finally, projected scaling, lightweighing and fabrication lead-times for meter class segments.
Document ID
20040013149
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Voevodsky, Michael
(Hextek Corp. Tucson, AZ, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Space Sciences (General)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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