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LSSA Project. Project quarterly report No. 4, January--March 1977

Description: A preliminary version of a workbook for SAMICS, a uniform costing methodology for manufacturing processes, was published. Continued experimentation with the fluidized bed reactor for production of Si by Zn reduction of SiCl/sub 4/ showed that 78 percent of theoretical conversion efficiency from SiCl/sub 4/ to Si was attainable using a hemispherical bed support, versus 68 percent when using the concise bed support. The EFG process is now producing 2-inch wide ribbon at 2 to 3 inches per minute; … more
Date: January 1, 1977
open access

Multi-wire slurry wafering demonstrations

Description: A series of ten slicing demonstrations on a multi-wire slurry saw, manufactured by Yasunaga Engineering Company of Japan and distributed by GEOS Corporation of Stamford, Connecticut, was made to evaluate the silicon ingot wafering capabilities. The results revealed that the present sawing capabilities can provide usable wafer area from an ingot 1.05 m/sup 2//kg (e.g., kerf width 0.135 mm and wafer thickness 0.265 mm). Satisfactory surface qualities and excellent yield of silicon wafers were fou… more
Date: February 22, 1978
Creator: Chen, C. P.
open access

Photovoltaic solar panel resistance to simulated hail. Low-Cost Solar Array Project

Description: As part of the Jet Propulsion Laboratory's Low-Cost Solar Array Project, test methods have been evaluated and procedures developed for testing photovoltaic flat-plate solar cell modules for resistance to impact by hailstones. Testing has included the use of simulated hailstones (frozen ice spheres projected at terminal velocity), steel balls, and other projectile types applied with three loading methods: pneumatic gun, gravity drop, and static loading. Results are presented that compare the adv… more
Date: October 15, 1978
Creator: Moore, D. & Wilson, A.
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