منابع مشابه
Multiscale Modeling of Hall Thrusters
Multiscale Modeling of Hall Thrusters Hall thrusters are efficient space propulsion devices that produce thrust by accelerating quasineutral plasma. The thruster consists of a channel with one end open to the ambient environment. The neutral propellant is injected at the closed end and is ionized by electrons produced by an externally mounted cathode. A radial magnetic field is applied across t...
متن کاملTransport Physics in Hall Plasma Thrusters
An analysis of measurements supporting the presence of anomalous cross-field electron mobility in Hall plasma accelerators is presented. Non-intrusive laser-induced fluorescence measurements of neutral and ionized xenon velocities, and various electrostatic probe diagnostic measurements are used to locally determine the effective electron Hall parameter inside the accelerator channel. These val...
متن کاملAnomalous electron mobility modeling in Hall thrusters
Accurate modeling of the anomalous electron mobility is crucial for successful simulation of Hall thrusters. Existing computational models for the anomalous electron mobility are used to simulate the UM/AFRL P5 Hall thruster in a 2D axisymmetric hybrid PIC-MCC code. Comparison to experimental results indicates that while these computational models can be tuned to reproduce the correct thrust or...
متن کامل2 D simulations of Hall thrusters
Closed-Drift (Hall) thrusters constitute an important electric propulsion technology for certain applications requiring low thrust levels, e.g. satellite station keeping and orbit transfer (Gulczinski and Spores, 1996). The thrust in Hall thrusters is generated by ions being accelerated through an annular plasma by the electric field set up between an anode and a cathode. This electric field is...
متن کاملParametric Investigation of the Rotating Spoke Instability in Hall Thrusters
This work presents recent results of ongoing investigations into rotating spoke instabilities in Hall thrusters. Recent work by the authors demonstrated large amounts of electron current carried by spokes in the nearanode region in the H6 6-kW laboratory model Hall thruster, and raises the question of whether spokes may play a larger role in electron transport throughout the Hall thruster plume...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2004
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.1710732