Radiation protection during space flight

Journal Article · Thu Dec 01 04:00:00 EST 1983 · Aviat., Space Environ. Med.; (United States)

OSTI ID:6582750

Kovalev, E E

The evaluation of space radiation hazards and shielding requirements is discussed. The proton and electron exposures encountered in earth orbit from the earth radiation belts and solar-flare activity are calculated as functions of orbital altitude and inclination, and the probabilities of exceeding a given dose equivalent are given in tables for missions of varying duration. The Galactic space radiation is characterized and shown to be significant only beyond the earth's vicinity. The Radiation Shielding Design Criteria approved by the USSR Ministry of Health are discussed, and the need for a more heavily shielded shelter module to be used whenever solar-flare activity is detected is indicated. The shielding of interplanetary spacecraft is considered, and it is shown that much heavier shielding is needed for missions longer than about 2 yrs during solar minimum or 3 yrs during solar maximum, or for spacecraft with nuclear energy installations (NEI). A typical shielding thickness requirement is 20 g/sq cm for the radiation shelter of a spacecraft powered by liquid propellant or by a nuclear rocket engine (but without an NEI) on a 600-d interplanetary flight. 7 references.

• Research Organization: Institut Mediko-Biologicheskikh Problem, Moscow, USSR
• OSTI ID: 6582750
• Journal Information: Aviat., Space Environ. Med.; (United States), Journal Name: Aviat., Space Environ. Med.; (United States) Vol. 54; ISSN ASEMC
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
655001* -- Medical Physics-- Radiation Protection Standards
BIOLOGICAL SHIELDING
NESDPS Office of Nuclear Energy Space and Defense Power Systems
RADIATION BELTS
RADIATION PROTECTION
RADIATIONS
SHIELDING
SOLAR RADIATION
SPACE FLIGHT
STELLAR RADIATION