Computer Science
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001stin...0217695g&link_type=abstract
Technical Report, EIS-Prog-Report27-Rev-3
Computer Science
Solar Orbits, Contamination, Descriptive Geometry, Solar Energy Absorbers, Solar Spectra, Multilayer Insulation, Solar Arrays, Thermal Radiation, Outgassing
Scientific paper
The purpose of this analysis is to determine the contaminant deposition on the filters in the EIS during the Solar B mission life. The EIS is a sun-viewing instrument on the Solar B spacecraft that will be positioned in a solar inertial orbit. The filters will be in constant exposure to the entire solar spectrum, including solar UV, consequently photodeposition of contaminants is a critical concern. The Solar B spacecraft geometry has been reduced to a geometry model containing critical components necessary for the contamination analysis. Some modeling parameters such as molecular source functions have been estimated based on the modeler's experience with similar spacecraft. For parameters which have been estimated, justification for the values used is discussed in the following text. As more information becomes available in the future, one or more of the estimated modeling parameters may need to be adjusted to better predict the contamination environment for EIS on the Solar B spacecraft. This report describes the third iteration of the external contamination analysis for the EIS. It includes more accurate input parameters which were added as information became available. Also, the geometry has been expanded to include the XRT and FPP. A thruster effluent analysis was performed and is included along with a discussion of the effects of the thermal radiators.
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