Solar flare protection for manned lunar missions - Analysis of the October 1989 proton flare event

Details Solar flare protection for manned lunar missions - Analysis of the October 1989 proton flare event Solar flare protection for manned lunar missions - Analysis of the October 1989 proton flare event

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991saei.confq....s&link_type=abstract

SAE, International Conference on Environmental Systems, 21st, San Francisco, CA, July 15-18, 1991. 13 p.

Astronomy and Astrophysics

Astronomy

Energy Spectra, Lunar Exploration, Manned Space Flight, Proton Energy, Radiation Hazards, Solar Flares, Solar Protons, Earth-Moon Trajectories, Galactic Cosmic Rays, Goes 7, Noaa Satellites, Radiation Dosage, Transfer Orbits

Scientific paper

Several large solar proton events occurred in the latter half of 1989. For a moderately shielded spacecraft in free space, the potential exposure would have been greatest for the flare which occurred between October 19 to 27, 1989. The temporal variations of the proton energy spectra at approximately 1 AU were monitored by the GOES-7 satellite. These data, recorded and processed at the NOAA-Boulder Space Environment Laboratory, provide the opportunity to analyze dose rates and cumulative doses which might be incurred by astronaus in transit to, or on, the moon. Of particular importance in such an event is the time development of exposure in the early phases of the flare, for which dose rates may range over many orders of magnitude in the first few hours. The cumulative dose as a function of time for the entire event is also predicted. In addition to basic shield calculations, dose rate contours are constructed for flare shelters in free-space and on the lunar surface.

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