Bernardo Vieira Magaldi

A plasma chemistry study on global model for argon gas as a propellant to electrostatic gridded ion thruster (eBook, ePUB)

accounting the effects of metastable species and implementing new terms in the gas power balance

• Format: ePub

Produktbeschreibung

Electric propulsion optimizes propellant mass and meets new propulsion device demands. These devices adjust satellite orbits and enable long missions. Among various thrusters, electrostatic ones have well-defined physics, simplifying operational parameter optimization. This study developed a global model for an Inductively Coupled Plasma (ICP) cylindrical ion thruster with an output polarized grid system. Argon propellant is injected into the chamber, and ICP plasma is generated by a radiofrequency current. Neutral and excited species are accelerated out by diffusion, while ionized species are accelerated via the polarized grids' electric field. The polarized grid system was optimized for better plasma sheath use. The model considers single and multi-step ionization, the Electron Energy Distribution Function (EEDF), neutral gas, and electron power balance equations. Excited species influence ionization energy, but not ionic density. However, the ion substitution rate increases, essential for thrust and specific impulse. The model determines the neutral gas temperature by considering the power balance and interactions with other species.

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Produktdetails

• Verlag: Editora Dialética
• Seitenzahl: 116
• Erscheinungstermin: 31. Juli 2024
• Englisch
• ISBN-13: 9786527011767
• Artikelnr.: 72314420

Autorenporträt

Mestre em Ciências pelo Instituto Tecnológico de Aeronáutica, focado no estudo da química do plasma para melhorar a eficiência de propulsores iônicos. Engenheiro de Materiais pela Universidade Federal do Rio de Janeiro, realizou intercâmbio na École Nationale Supérieure des Mines Nancy, onde iniciou pesquisas em manufatura aditiva de meios porosos. Deu continuidade às pesquisas com impressão 3D no laboratório CEFCON-COPPE/UFRJ e desenvolvimento de filmes finos de nanocarbono.