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in subjects: "Nonmetals 420200* -- Engineering-- Facilities, Equipment, & Techniques"  
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Multistage metal hydride compressor

Description: Metal hydride compressors can compress hydrogen to high pressures without using mechanical moving parts. They are particularly suited for tritium applications because they require minimal maintenance. A three-stage metal hydride compressor which can compress hydrogen from 14.7 to 20,000 psia has been demonstrated. The design principle and experimental results are presented.
Date: January 1, 1986
Creator: Heung, L.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Membrane oxygen enrichment cost and application evaluation

Description: A separation process, similar to the reverse osmosis membrane process for the desalination of water, can be used for the separation and enrichment of multi-component gas streams. The development of new processing methods and modular packing systems together with advanced commercialization of desalination systems now makes similar processes for gas separation appear feasible and economical. Composite membranes have been developed that are both thin enough to provide a large gas flow and strong e… more
Date: March 1, 1979
Creator: Fischer, Jack & Burnett, Lowell J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Description of a unique machine tool permitting achievement of < 15-A rms diamond-turned surfaces

Description: A new machine tool now in the final stages of development at the Pacific Northwest Laboratory uses a unique tool motion to produce diamond-turned surfaces of exceptionally high quality. The cutting tool is programmed to move in 4-nm increments along two axes: an X axis and an Omega axis. Exceptionally stiff and accurate control of the tool is possible with this Omega-X system. Copper surfaces of revolution have been produced with a 12.3-A rms surface finish and a contour accuracy of 75 nm. In c… more
Date: January 1, 1980
Creator: Miller, D. M.; Hauver, G. H.; Culverhouse, J. N. & Greenwell, E. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interfacing the linear motor slide drive to a precision machine tool

Description: A linear-motor slide-drive system has been used to replace the mechanical gear train on a large-component diamond-turning lathe. Inaccuracies in the previous lead-screw drive system resulted in cyclic errors of 0.25 to 2.5 ..mu..m (10 to 100 ..mu.. in.), which corresponded to the pitch of the screw. These cyclic errors have been eliminated, and the machine is presently being used to successfully fabricate reflective metal optics.
Date: April 1, 1979
Creator: Barkman, W. E.; Brown, R. J.; Gerth, H. L. & Green, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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