Physics
Scientific paper
Sep 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7633120w&link_type=abstract
Unknown
Physics
Aerospace Environments, Cosmic Rays, Extravehicular Activity, Radiation Belts, Aerospace Medicine, Dosimeters, Manned Spacecraft, Radiation Shielding, Solar Activity, Space Suits
Scientific paper
The natural radiations present at geostationary orbit are discussed. Low-level galactic cosmic rays are important for careers spending a year or more at geostationary altitude. Trapped radiation will on occasion require interruption of extravehicular activity (EVA). The spacesuit shield requirements are strongly affected by the number of interruptions allowed. EVA cannot proceed during a large solar event and maximum allowable doses are exceeded in a few hours unless a heavily shielded area is provided. A shelter of 10 g/sq cm with personal shielding for the eyes and testes would contain exposure to within the presently accepted exposure constraints. Since radiation levels can increase unexpectedly to serious levels, an onboard radiation monitoring system with rate and integration capabilities is required for both surface-dose and depth-dose monitoring.
Denn F. M.
Wilson William J.
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