Computer Science – Performance
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9222499b&link_type=abstract
Unknown
Computer Science
Performance
Degradation, Exposure, Irradiance, Long Duration Exposure Facility, Radiation Damage, Radiation Dosage, Solar Radiation, Longerons, Position (Location), Reflected Waves, Sun, Terrestrial Radiation, Time Functions, Trays
Scientific paper
Exposure to solar radiation is one of the primary causes of degradation of materials on spacecraft. Accurate knowledge of solar exposure is needed to evaluate the performance of materials carried on the Long Duration Exposure Facility (LDEF) during its nearly 6 year orbital flight. Presented here are tables and figures of calculated solar exposure for the experiment rows, longerons, and end bays of the spacecraft as functions of time in orbit. The data covers both direct solar and earth reflected radiation. Results are expressed in cumulative equivalent sun hours (CESH) or the hours of direct, zero incidence solar radiation that would cause the same irradiance of a surface. Space end bays received the most solar radiation, 14,000 CESH; earth end bays received the least, 4,500 CESH. Row locations received between 6,400 CESH and 11,200 CESH with rows facing either eastward or westward receiving the most radiation and rows facing northward or southward receiving the least.
Bourassa R. J.
Gillis J. R.
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