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Radiation dose and shielding for the space stationSignificant differences in dose prediction for Space Station arise depending on whether or not the magnetic field model is extrapolated into the future. The basis for these calculations is examined in detail, and the importance of the residual atmospheric layer at altitudes below 1000 km, with respect to radiation attenuation, is emphasized. Dosimetry results from Shuttle flights are presented and compared with the computed results. It is recommended that, at this stage, no extrapolation of the magnetic field into the future be included in the calculations. A model adjustment, to replace this arbitrary procedure, is presented. Dose predictions indicate that, at altitudes below 500 km and at low inclination, and with nominal module wall thickness (0.125 in. aluminum), orbit stay times of 90 days in Space Station would result in quarterly radiation doses to the crew, which are well within present limits for both males and females. Countermeasures would be required for stay times of a year or more and the measure of increasing shielding is examined.
Document ID
19880046321
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mccormack, Percival D.
(NASA Office of Space Station Washington, DC, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1988
Publication Information
Publication: Acta Astronautica
Volume: 17
ISSN: 0094-5765
Subject Category
Aerospace Medicine
Report/Patent Number
IAF PAPER 86-380
Accession Number
88A33548
Distribution Limits
Public
Copyright
Other

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