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Effects of radiobiological uncertainty on shield design for a 60-day lunar missionSome consequences of uncertainties in radiobiological risk due to galactic cosmic ray exposure are analyzed to determine their effect on engineering designs for a first lunar outpost - a 60-day mission. Quantitative estimates of shield mass requirements as a function of a radiobiological uncertainty factor are given for a simplified vehicle structure. The additional shield mass required for compensation is calculated as a function of the uncertainty in galactic cosmic ray exposure, and this mass is found to be as large as a factor of 3 for a lunar transfer vehicle. The additional cost resulting from this mass is also calculated. These cost estimates are then used to exemplify the cost-effectiveness of research.
Document ID
19930008825
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Wilson, John W. (NASA Langley Research Center Hampton, VA, United States)
Nealy, John E. (NASA Langley Research Center Hampton, VA, United States)
Schimmerling, Walter (Universities Space Research Association Washington, DC., United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1993
Subject Category
Space Radiation
Report/Patent Number
L-17136
NASA-TM-4422
NAS 1.15:4422
Accession Number
93N18014
Funding Number(s)
PROJECT: RTOP 199-04-16-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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