Estudo de algumas aquisições orbitais usando um propulsor a plasma do tipo hall com imãs permanentes. / Estudo de algumas aquisições orbitais usando um propulsor a plasma do tipo hall com imãs permanentes.

AUTOR(ES)

Brunno Silva Moraes

DATA DE PUBLICAÇÃO

2008

RESUMO

This work aims at momentum for the acquisition of orbits of artificial satellites equipped with a Hall thruster. These devices are responsible for the transformation of the electricity used in the gas ionization in kinetic energy for the acceleration of the plasma that provides thrust to the satellite. Since mid-2002, the Plasma Laboratory of the Institute of Physics of the University of Brasilia develop the prototype derivative of the closed drift plasma thrusters - nowadays called Stationary Plasma Thrusters (SPT) - which uses permanent magnets for the generation of internal magnetic fields and the Hall effect for ion propellant ejection. The Hall thrusters applicability in orbit transfer maneuvers is numerically investigated from proposals for orbital maneuvers with low thrust. There are performed numerical simulations of the transfer of satellites with small, medium and large size from low orbits (LEO) to geosinchronous orbit, de-orbit of geostationary satellites and changes of the orbital inclination seeking the equatorial orbit. The work aims to numerical indicators of the viability of the use of Hall thruster with permanent magnets in some orbital acquisitions. The PHall project is developed by LP-IFUnB in collaboration with the group of Automation and Control of Mechanical Engineering (UnB), with the Associate Laboratory of Plasma INPE and the FEG-UNESP.

ASSUNTO(S)

propulsor hall com imãs permantes fisica propusão a plasma

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