Resumo

HERNANDEZ R, Sergio; GOMEZ V, Ernesto  e  ROCHA A, Diego F. Outstanding evaluation of radiation emitted by the sun as a power supplysystem for a pico-satellite "CUBESAT. Tecnura [online]. 2012, vol.16, n.31, pp.19-32. ISSN 0123-921X.

In the operation of a satellite is vital electricity, as this should feed all the same systems, such as command and control, that of communications, attitude control, among others. This energy can be obtained, basically, in outer space to Earth in different forms, either from nuclear reactions (EN), or from chemical reactions (EQ) or from the transformation of energy from the sun (EF). Regardless of the type of mission need to run the spacecraft (commercial, military or scientific), the size of the satellite and the type of energy source, be aware that this is a limited resource in time of life and in his value, and that the smaller the satellite these two quantities decrease dramatically, being the most critical stage of a satellite peak, where size and weight restrictions prevent the use of EN and EQ, as the only remaining option using the EF. To this must be added that the dimensions of the faces of the same (10 cm x 10 cm) only allow us to locate, at most, two solar cells per side. In order to determine the energy that the sun can supply a satellite peak below, and quickly, we will study the radiation emitted by the sun and the possible amount of this which is available at the height of the orbit of the peak satellite, for which one uses the same simulation in MATLAB.

Palavras-chave : Solar energy; photocell; photon; orbits; pico-satellite; radiation.

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