[An analysis of radiation risk for manned space flight in low-earth orbits with medium inclination]

The radiation risk for manned space flight in the orbit with altitude <500km and inclination 40 degrees-50 degrees was analyzed. The doses of several anomalously large solar proton events (SPE) were estimated from the measured doses during the SPE where the spectral parameters were known. The result shows that the radiation risk is not serious for the mission with above orbital parameters.