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Investigation of microgravity effects on solidification phenomena of selected materialsA Get Away Special (GAS) experiment payload to investigate microgravity effects on solidification phenomena of selected experimental samples has been designed for flight. It is intended that the first flight of the assembly will (1) study the p-n junction characteristics for advancing semiconductor device applications, (2) study the effects of gravity-driven convection on the growth of HgCd crystals, (3) compare the textures of the sample which crystallizes in microgravity with those found in chondrite meteorites, and (4) modify glass optical characteristics through divalent oxygen exchange. The space flight experiment consists of many small furnaces. While the experiment payload is in the low gravity environment of orbital flight, the payload controller will sequentially activate the furnaces to heat samples to their melt state and then allow cooling to resolidification in a controlled fashion. The materials processed in the microgravity environment of space will be compared to the same materials processed on earth in a one-gravity environment. This paper discusses the design of all subassemblies (furnance, electronics, and power systems) in the experiment. A complete description of the experimental materials is also presented.
Document ID
19930003980
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maag, Carl R. (Science Applications International Corp. Glendora, CA, United States)
Hansen, Patricia A. (Engineering and Economics Research, Inc. Seabrook, MD., United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1992
Publication Information
Publication: NASA. Goddard Space Flight Center, The 1992 Shuttle Small Payloads Symposium
Subject Category
Materials Processing
Accession Number
93N13168
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19930003970Collected WorksThe 1992 Shuttle Small Payloads Symposium
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