Banca de DEFESA: SERGIO THADEU TAVARES DA SILVA JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : SERGIO THADEU TAVARES DA SILVA JUNIOR
DATE: 16/12/2024
TIME: 10:00
LOCAL: Videoconferência Plataforma Zoom
TITLE:

Comparison of the performance of a cylindrical Hall thruster with different anode voltages via numerical simulations

KEY WORDS:

Electric propulsion, Plasma, Ions, CubeSats

PAGES: 53
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

Plasma propulsion, or electric propulsion, arises from the need to explore deep space more economically and efficiently. The cylindrical Hall thruster (CHT) is an electric propulsion device that demonstrates enhanced propellant utilization and performance efficiencies within reduced dimensions and lower power thresholds when compared to conventional plasma propulsion devices. The compact size and operation at lower power levels make it an interesting option to provide propulsion for CubeSats and small satellites. The CHT comprises a channel with an annular anode through which neutral gas is injected, subsequently ionized by magnetized electrons injected from an external hollow cathode. The resulting plasma ions are ejected from the device, giving thrust. This work aims to understand and study the plasma in the discharge channel of a CHT through numerical simulations. The code describes the plasma with a hybrid model in which the electrons are treated as a fluid and the ions and neutral atoms as pseudo-particles. The simulations were conducted for two different potential values at the anode, namely, 150 V and 300 V, representing different modes of operation. The results obtained with this simplified model allow obtain an optimal configuration for a future prototype to be implemented at the Plasma Physics Laboratory at the University of Brasilia.

COMMITTEE MEMBERS:
Externo à Instituição - JEAN CARLO SANTOS - UTFPR
Externo ao Programa - 665665 - JOSE LEONARDO FERREIRA - nullExterno ao Programa - 2879502 - LUI TXAI CALVOSO HABL - nullPresidente - 1906134 - RODRIGO ANDRES MIRANDA CERDA