Preliminary analyses of shielding requirements to protect astronauts from the harmful effects of radiation on both short-term and long-term lunar missions have been performed. Shielding needs for both solar particle events (SPEs) and galactic cosmic ray (GCR) exposure are discussed for transit vehicles and surface habitats. This work was performed under the aegis of two NASA initiatives. The first study was an architecture trade study led by Langley Research Center (LaRC) in which a broad range of vehicle types and mission scenarios were compared. The radiation analysis for this study primarily focused on the additional shielding mass required to protect astronauts from the rare occurrence of a large SPE. The second study, led by Johnson Space Center (JSC), involved the design of lunar habitats. Researchers at LaRC were asked to evaluate the changes to mission architecture that would be needed if the surface stay were lengthened from a shorter mission duration of 30 to 90 days to a longer stay of 500 days. Here, the primary radiation concern was GCR exposure. The methods used for these studies as well as the resulting shielding recommendations are discussed.
Radiation Protection for Lunar Mission Scenarios
2005
16 pages
Report
Keine Angabe
Englisch
Space Technology , Astronomy & Astrophysics , Radiobiology , Radiation Pollution & Control , Radiation shielding , Lunar exploration , Space vehicles , Space flight , Astronauts , Space environments , Galactic cosmic ray , Radiation hazards , Radiation doses , Radiation effects , Exposure , Solar particles , Space missions , Recommendations
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