Download or read book Plasma Characterization of Hall Thruster with Active and Passive Segmented Electrodes written by Y. Raitses and published by . This book was released on 2002 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasma Characterization of Hall Thruster with Active and Passive Segmented Electrodes written by Y. Raitses and published by . This book was released on 2002 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Inert Gas Plasma Thrusters written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficiency of modern Hall thrusters is impacted by the ability to maintain a high ratio of the ion to electron current density, J(sub i)/J(sub e), at the exit of the acceleration channel. In principal, there is no limit to this ratio, since the electrons that are necessary to maintain the current balance at the anode can be generated within the ionization zone upstream of the channel exit. However, in practice, this metric of performance in a typical Hall thruster can range from 1 - 10. This is in part due to the loss of electrons and ions through recombination reactions on the channel wall, and also due to the anomalous migration of electrons from the exit plane through the region of strong magnetic fields. It is believed that this poor confinement of electrons is in part due to turbulent fluctuations in plasma properties, which give rise Bohm-like electron transport in a direction orthogonal to the applied magnetic field. The Stanford Research was aimed at understanding this transport, and any affects that wall scattering may have on also enhancing electron current flow within the discharge channel. The broader long-term objective is to develop passive and/or active control strategies to enhance or suppress electron flow in regions of the channel where such actuation is desirable. Feedback-controlled actuation methods to reduce plasma fluctuations where only marginally successful back in the mid 70's in early versions of Hall thrusters 1,2. Using modern diagnostic and characterization strategies to obtain an improved understanding of the role that fluctuations and wall scattering plays in electron transport, it is anticipated that we can design more effective control and actuation strategies.
Download or read book The Development and Characterization of a Two stage Hybrid Hall ion Thruster written by Peter Young Peterson and published by . This book was released on 2004 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 40th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit July 11 14 2004 Fort Lauderdale FL 04 4050 04 4099 written by and published by . This book was released on 2004 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Operations of Hall Thruster with Segmented Electrodes written by N. J. Fisch and published by . This book was released on 1999 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 38th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit 02 3950 02 3999 written by and published by . This book was released on 2002 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variable Operation of Hall Thruster with Multiple Segmented Electrodes written by N. J. Fisch and published by . This book was released on 2000 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Segmented Electrode in Hall Current Plasma Thrusters written by Y. Raitses and published by . This book was released on 2001 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of a Plume Reduction in Segmented Electrode Hall Thruster written by Y. Raitses and published by . This book was released on 2000 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurements of Plasma Potential Distribution in Segmented Electrode Hall Thruster written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of a segmented electrode placed at the Hall thruster exit can substantially reduce the voltage potential drop in the fringing magnetic field outside the thruster channel. In this paper, we investigate the dependence of this effect on thruster operating conditions and segmented electrode configuration. A fast movable emissive probe is used to measure plasma potential in a 1 kW laboratory Hall thruster with semented electrodes made of a graphite material. Relatively small probe-induced perturbations of the thruster discharge in the vicinity of the thruster exit allow a reasonable comparison of the measured results for different thruster configurations. It is shown that the plasma potential distribution is almost not sensitive to changes of the electrode potential, but depends on the magnetic field distribution and the electrode placement.
Download or read book Hall Thruster Discharge Chamber Plasma Characterization Using a High speed Axial Reciprocating Electrostatic Probe written by James M. Haas and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variable Operation of Hall Thruster with Multiple Segmented Electrodes written by N. J. Fisch and published by . This book was released on 2000 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 38th AIAA ASME SAE ASEE Joint Propulsion Conference Exhibit 02 4100 02 4149 written by and published by . This book was released on 2002 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ein Hochprei lich Corpus Evangelicorum Unterth nigste Anzeig und Bittschrifft Unserer des Evangelischen Lutherischen Pfarrers des Kirchspiels Sien im Westrich zwischen Lauterecken und Kyrn gelegen um kr fftigste und schleunigste Assistenz gegen die Freyherren von Sickingen und Dererselben durch Chur Pf ltzische Mannschafft ausge bte gewaltsame Executiones written by and published by . This book was released on 1736 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Segmented Electrode in Hall Current Plasma Thrusters written by Y. Raitses and published by . This book was released on 2001 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Operations of Hall Thruster with Segmented Electrodes written by N. J. Fisch and published by . This book was released on 1999 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
