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Author : Kai-Mei C. Fu
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Plasma Diagnostics in the Near Field Plume of a Hall Thruster written by Kai-Mei C. Fu and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 0470436263
Total Pages : 528 pages
Book Rating : 4.4/5 (74 download)
Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2008-12-22 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout most of the twentieth century, electric propulsion was considered the technology of the future. Now, the future has arrived. This important new book explains the fundamentals of electric propulsion for spacecraft and describes in detail the physics and characteristics of the two major electric thrusters in use today, ion and Hall thrusters. The authors provide an introduction to plasma physics in order to allow readers to understand the models and derivations used in determining electric thruster performance. They then go on to present detailed explanations of: Thruster principles Ion thruster plasma generators and accelerator grids Hollow cathodes Hall thrusters Ion and Hall thruster plumes Flight ion and Hall thrusters Based largely on research and development performed at the Jet Propulsion Laboratory (JPL) and complemented with scores of tables, figures, homework problems, and references, Fundamentals of Electric Propulsion: Ion and Hall Thrusters is an indispensable textbook for advanced undergraduate and graduate students who are preparing to enter the aerospace industry. It also serves as an equally valuable resource for professional engineers already at work in the field.
Author : Rohit Shastry
Publisher : BiblioGov
ISBN 13 : 9781289113049
Total Pages : 22 pages
Book Rating : 4.1/5 (13 download)
Download or read book Plasma Potential and Langmuir Probe Measurements in the Near-Field Plume of the Nasa-457mv2 Hall Thruster written by Rohit Shastry and published by BiblioGov. This book was released on 2013-06 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Technical Reports Servcr (NTRS) houses half a million publications that are a valuable means of information to researchers, teachers, students, and the general public. These documents are all aerospace related with much scientific and technical information created or funded by NASA. Some types of documents include conference papers, research reports, meeting papers, journal articles and more. This is one of those documents.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721798063
Total Pages : 26 pages
Book Rating : 4.7/5 (98 download)
Download or read book Thruster Plume Plasma Diagnostics written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although detailed near field (0 to 3 cm) information regarding the exhaust plume of a two kilowatt arc jet is available (refs. 1 to 6), there is virtually little or no information (outside of theoretical extrapolations) available concerning the far field (2.6 to 6.1 m). Furthermore real information about the plasma at distances between (3 to 6 m) is of critical importance to high technology satellite companies in understanding the effect of arc jet plume exhausts on space based power systems. It is therefore of utmost importance that one understands the exact nature of the interaction between the arc jet plume, the spacecraft power system and the surrounding electrical plasma environment. A good first step in understanding the nature of the interactions lies in making the needed plume parameter measurements in the far field. All diagnostic measurements are performed inside a large vacuum system (12 m diameter by 18 m high) with a full scale arc jet and solar array panel in the required flight configuration geometry. Thus, necessary information regarding the plume plasma parameters in the far field is obtained. Measurements of the floating potential, the plasma potential, the electron temperature, number density, density distribution, debye length, and plasma frequency are obtained at various locations about the array (at vertical distances from the arc jet nozzle: 2.6, 2.7, 2.8, 3.2, 3.6, 4.0, 4.9, 5.0, 5.4, 5.75, and 6.14 m). Plasma diagnostic parameters are measured for both the floating and grounded configurations of the arc jet anode and array. Spectroscopic optical measurements are then acquired in close proximity to the nozzle, and contamination measurements are made in the vicinity of the array utilizing a mass spectrometer and two Quartz Crystal Microbalances (QCM's). Galofaro, Joel T. and Vayner, Boris V. and Hillard, G. Barry and Chornak, Michael T. Glenn Research Center NASA/TM-2005-213837, E-15207
Author :
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (495 download)
Download or read book Remote Diagnostic Measurements of Hall Thruster Plumes written by and published by . This book was released on 2009 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes measurements of Hall thruster plumes that characterize ion energy distributions and charge state fractions using remotely located plasma diagnostics. Plume measurements were performed using electrostatic analyzers (ESAs) and ExB probes from Plasma Controls, LLC on ion and plasma sources at Colorado State University (CSU) and Hall thrusters operated at the Air Force Institute of Technology (AFIT) and the Air Force Research Laboratory (AFRL). Data are presented from ion source testing at CSU that demonstrated the performance of ESA and ExB probes to characterize energy and charge state. Next, energy and charge state measurements are described from testing of a 200 W Hall thruster at AFIT. Measurements showed variation in the ion energy distribution with changes in thruster power and an increase in the fractions of multiply charged ions with increasing azimuthal position. Finally, ExB probe charge state measurements are presented from a 6-kW laboratory Hall thruster operated at low discharge voltage levels at AFRL/RZSS. Like the 200 W Hall thruster measurements at AFIT, results from the 6-kW Hall thruster showed an increase in the fractions of multiply charged ions with increasing azimuthal position.
Author : Peter J. Urban
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.:/5 (13 download)
Download or read book Non-intrusive Optical Measurement of Electron Temperature in Near Field Plume of Hall Thruster written by Peter J. Urban and published by . This book was released on 2018 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently there is a large interest in the use of more efficient means of propulsion in long term missions due to the costs and difficulties associated with placing and maintaining the needed fuel for conventional chemical systems in orbit. Mass reduction of upper stages will return large returns due to the great reduction in required lower stage fuel. Due to these factors, alternatives are undergoing active research, though this paper is concerned with the area of electrical propulsion.Electric propulsion is broadly defined as propulsion where the energization of the exhaust occurs via application of electromagnetic fields as opposed to chemical reactions or thermal processes. Frequently plasmas are involved in such processes, and as such, diagnostics related to establishing the characteristics of plasmas are of great value to the field, especially any techniques which do not disrupt the plasma in testing.This study focused on the use of non-intrusive optical techniques to measure electron temperature in the near field of a Hall thruster, a type of electric propulsion. Results indicate that the pursued technique may be of utility to providing a simple to set up and execute diagnostic for determining electron temperatures in the near field of a hall thruster. This will allow for less-expensive rapid turnaround on obtaining of experimental data to test or provide as input for models of plasma behavior, wear in electric propulsion, thruster design, and operation confirmation.
Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (742 download)
Download or read book Plasma Properties in the Plume of a Hall Thruster Cluster written by and published by . This book was released on 2003 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hall thruster cluster is an attractive propulsion approach for spacecraft requiring very high-power electric propulsion systems. This article presents plasma density, electron temperature, and plasma potential data collected with a combination of triple Langmuir probes and floating emissive probes in the plume of a low-power, four-engine Hall thruster cluster. Simple analytical formulas are introduced that allow these quantities to be predicted downstream of a cluster based solely on the known plume properties of a single thruster. Ion energy distribution functions measured using both a parallel plate electrostatic analyzer and a retarding potential analyzer are presented. A cluster of Hall thrusters is shown to exhibit dramatically different ion energy profiles compared to a single thruster. In particular, clustering causes a significant increase in the fraction of ions at energies below the primary peak in the distribution, most likely due to an increase in elastic scattering and the effects of the unique plasma potential profiles in the cluster plume.
Author : Lyon Bradley King
Publisher :
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.3/5 (91 download)
Download or read book Transport-property and Mass Spectral Measurements in the Plasma Exhaust Plume of a Hall-effect Space Propulsion System written by Lyon Bradley King and published by . This book was released on 1998 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Keidar
Publisher : Academic Press
ISBN 13 : 0128137037
Total Pages : 587 pages
Book Rating : 4.1/5 (281 download)
Download or read book Plasma Engineering written by Michael Keidar and published by Academic Press. This book was released on 2018-08-06 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma Engineering, Second Edition, applies the unique properties of plasmas (ionized gases) to improve processes and performance over many fields, such as materials processing, spacecraft propulsion and nanofabrication. The book considers this rapidly expanding discipline from a unified standpoint, addressing fundamentals of physics and modeling, as well as new and real-word applications in aerospace, nanotechnology and bioengineering. This updated edition covers the fundamentals of plasma physics at a level suitable for students using application examples and contains the widest variety of applications of any text on the market, spanning the areas of aerospace engineering, nanotechnology and nanobioengineering. This is highly useful for courses on plasma engineering or plasma physics in departments of Aerospace Engineering, Electrical Engineering and Physics. It is also useful as an introduction to plasma engineering and its applications for early career researchers and practicing engineers. - Features new material relevant to application, including emerging areas of plasma nanotechnology and medicine - Contains a new chapter on plasma-based control, as well as a description of RF and microwave-based plasma applications, plasma lighting, reforming and other most recent application areas - Provides a technical treatment of the fundamental and engineering principles used in plasma applications
Author : James Matthew Haas
Publisher :
ISBN 13 :
Total Pages : 602 pages
Book Rating : 4.3/5 (91 download)
Download or read book Low-perturbation Interrogation of the Internal and Near-field Plasma Structure of a Hall Thruster Using a High-speed Probe Positioning System written by James Matthew Haas and published by . This book was released on 2001 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (317 download)
Download or read book Performance Evaluation of the SPT-140 written by and published by . This book was released on 1997 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roger M. Myers
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)
Download or read book Pulsed Plasma Thruster Contamination written by Roger M. Myers and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dan M. Goebel
Publisher : John Wiley & Sons
ISBN 13 : 1394163231
Total Pages : 564 pages
Book Rating : 4.3/5 (941 download)
Download or read book Fundamentals of Electric Propulsion written by Dan M. Goebel and published by John Wiley & Sons. This book was released on 2023-10-25 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Electric Propulsion Understand the fundamental basis of spaceflight with this cutting-edge guide As spacecraft engineering continues to advance, so too do the propulsion methods by which human beings can seek out the stars. Ion thrusters and Hall thrusters have been the subject of considerable innovation in recent years, and spacecraft propulsion has never been more efficient. For professionals within and adjacent to spacecraft engineering, this is critical knowledge that can alter the future of space flight. Fundamentals of Electric Propulsion offers a thorough grounding in electric propulsion for spacecraft, particularly the features and mechanisms underlying Ion and Hall thrusters. Updated in the light of rapidly expanding knowledge, the second edition of this essential guide detailed coverage of thruster principles, plasma physics, and more. It reflects the historic output of the legendary Jet Propulsion Laboratory and promises to continue as a must-own volume for spacecraft engineering professionals. Readers of the second edition of Fundamentals of Electric Propulsion readers will also find: Extensive updates to chapters covering hollow cathodes and Hall thrusters, based on vigorous recent research New sections covering magnetic shielding, cathode plume instabilities, and more Figures and homework problems in each chapter to facilitate learning and retention Fundamentals of Electric Propulsion is an essential work for spacecraft engineers and researchers working in spacecraft propulsion and related fields, as well as graduate students in electric propulsion, aerospace science, and space science courses.
Author : Jesse Allen Linnell
Publisher :
ISBN 13 :
Total Pages : 714 pages
Book Rating : 4.3/5 (91 download)
Download or read book An Evaluation of Krypton Propellant in Hall Thrusters written by Jesse Allen Linnell and published by . This book was released on 2006 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James T. Thurman (LT, USN.)
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (132 download)
Download or read book Hall Thruster Plume Diagnostics Utilizing Microwave Interferometry written by James T. Thurman (LT, USN.) and published by . This book was released on 2008 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Young Peterson
Publisher :
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.3/5 (91 download)
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:
Author : John E. Foster
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (317 download)
Download or read book Plume and Discharge Plasma Measurements of an NSTAR-type Ion Thruster written by John E. Foster and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
