Solar particle event predictions for manned Mars missions

Details Solar particle event predictions for manned Mars missions Solar particle event predictions for manned Mars missions

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mmm..work..674h&link_type=abstract

In NASA. Marshall Space Flight Center Manned Mars Mission. Working Group Papers, V. 2, Sect. 5, App. p 674-683 (SEE N87-17760 10

Computer Science

Forecasting, Hazards, Long Duration Space Flight, Manned Mars Missions, Solar Flares, Spacecrews, Mars (Planet), Radiation Dosage, Radiation Protection, Radiation Shielding

Scientific paper

Manned space missions to Mars require consideration of the effects of high radiation doses produced by solar particle events (SPE). Without some provision for protection, the radiation doses from such events can exceed standards for maximum exposure and may be life threatening. Several alternative ways of providing protection require a capability for predicting SPE in time to take some protective actions. The SPE may occur at any time during the eleven year solar cycle so that two year missions cannot be scheduled to insure avoiding them although they are less likely to occur at solar minimum. The present forecasts are sufficiently accurate to use for setting alert modes but are not accurate enough to make yes/no decisions that have major mission operational impacts. Forecasts made for one to two year periods can only be done as probabilistic forecasts where there is a chance of SPE occurring. These are current capabilities but are not likely to change significantly by the year 2000 with the exception of some improvement in the one to ten day forecasts. The effects of SPE are concentrated in solar longitudes near where their parent solar flares occur, which will require a manned Mars mission to carry its own small solar telescope to monitor the development of potentially dangerous solar activity. The preferred telescope complement includes a solar X-ray imager, a hydrogen-alpha scanner, and a solar magnetograph.

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