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Radiation protection for human missions to the Moon and MarsRadiation protection assessments are performed for advanced Lunar and Mars manned missions. The Langley cosmic ray transport code and the nucleon transport code are used to quantify the transport and attenuation of galactic cosmic rays and solar proton flares through various shielding media. Galactic cosmic radiation at solar maximum and minimum, as well as various flare scenarios are considered. Propagation data for water, aluminum, liquid hydrogen, lithium hydride, lead, and lunar and Martian regolith (soil) are included. Shield thickness and shield mass estimates required to maintain incurred doses below 30 day and annual limits (as set for Space Station Freedom and used as a guide for space exploration) are determined for simple geometry transfer vehicles. On the surface of Mars, dose estimates are presented for crews with their only protection being the carbon dioxide atmosphere and for crews protected by shielding provided by Martian regolith for a candidate habitat.
Document ID
19910008686
Document Type
Technical Publication (TP)
Authors
Simonsen, Lisa C. (NASA Langley Research Center Hampton, VA, United States)
Nealy, John E. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1991
Subject Category
SPACE RADIATION
Report/Patent Number
NASA-TP-3079
NAS 1.60:3079
L-16892
Funding Number(s)
PROJECT: RTOP 326-83-10-50
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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