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Findings of the Joint Workshop on Evaluation of Impacts of Space Station Freedom Ground ConfigurationsAt the workshop, experts from the plasma interactions community evaluated the impacts of environmental interactions on the Space Station Freedom (SSF) under each of the proposed grounding schemes. The grounding scheme chosen for the SSF power system was found to have serious implications for SSF design. Interactions of the SSF power system and structure with the low Earth orbit (LEO) plasma differ significantly between different proposed grounding schemes. Environmental constraints will require modification of current SSF designs under any grounding scheme. Maintaining the present negative-grounding scheme compromises SSF safety, structural integrity, and electromagnetic compatibility. It also will increase contamination rates over alternative grounding schemes. One alternative, positive grounding of the array, requires redesign of the primary power system in work package four. Floating the array reduces the number of circuit changes to work package four but adds new hardware. Maintaining the current design will affect all work packages; however, no impacts were identified on work packages one, two, or three by positively grounding or floating the array, with the possible exception of extra corona protection in multi-wire connectors.
Document ID
19910011415
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ferguson, Dale C. (NASA Lewis Research Center Cleveland, OH., United States)
Snyder, David B. (NASA Lewis Research Center Cleveland, OH., United States)
Carruth, Ralph (NASA Marshall Space Flight Center Huntsville, AL., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Publication Information
Publication: NASA, Lyndon B. Johnson Space Center, Fourth Annual Workshop on Space Operations Applications and Research (SOAR 90)
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
91N20728
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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