%0 Journal Article
%4 sid.inpe.br/mtc-m21c/2020/12.02.12.51
%2 sid.inpe.br/mtc-m21c/2020/12.02.12.51.39
%@issn 0065-3438.
%T Optimization of low thrust transfer orbits of a spacecraft considering the radiation hazard from the van allen belts
%D 2020
%9 conference paper
%A Schmitt, R. N.,
%A Sukhanov, A.,
%A Prado, Antonio Fernando Bertachini de Almeida,
%A Barbosa, G.,
%@affiliation Universidade de São Paulo (USP)
%@affiliation Russian National Institute for Space Research
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress antonio.prado@inpe.br
%B Advances in the Astronautical Sciences
%V 171
%P 121-132
%X The goal of this work is to measure the amount of radiation a spacecraft receives once it leaves the sphere of influence of Earth in a Low Thrust Orbit (LTO). The spacecraft crosses the Van Allen belts many times during the transfer, in which particles such as protons and electrons can damage the onboard electronic equipment. Through mathematically modeling of the density of particles from the belt in space, it was possible to integrate it in time and compute the total dose of radiation absorbed by the spacecraft according to the chosen trajectory. Therefore, different trajectories were computed varying in eccentricity and type of propulsion system, which gave the following final parameters of interest: mission duration, fuel consumption, time in Van Allen belts and total fluence of radiation absorbed. Using an optimization algorithm, thousands of trajectories were tested and the best ones with respect to the final parameters were given as a table of results.
%@language en