ABSTRACT
The algorithm of estimation of the radiation risk to cosmonauts on long-term interplanetary missions stems from new approaches to the estimation of radiation hazard, calculation of generalized dose inputs from various space radiations, hypothesized probability of human death due to exposure to varying doses of standard radiation. These data allow calculation of radiation risk from deterministic sources along the flight trajectory and stochastically distributed in time solar flares. Results of this calculation can be further used to correlate the in-flight radiation risk with mission length, shield thickness, solar cycle, and age of cosmonauts. They may be additionally used to compare the in-flight radiation risk with the national demographic risk of male lethality over a similar period.
