Advanced Electric Propulsion Research, 1988 PDF Download
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Author:
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Category :
Languages : en
Pages : 94
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Author:
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ISBN:
Category :
Languages : en
Pages : 94
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Author:
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Category :
Languages : en
Pages : 82
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Category :
Languages : en
Pages : 68
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Author: William R. Mickelsen
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Category : Electrostatic accelerators
Languages : en
Pages :
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Author:
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ISBN:
Category :
Languages : en
Pages : 56
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Author: Colorado State University. College of Engineering
Publisher:
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Category :
Languages : en
Pages :
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Author: William R. Mickelsen
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Category : Electrostatic accelerators
Languages : en
Pages :
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722920128
Category :
Languages : en
Pages : 108
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Results are presented which show that hollow cathodes can be operated on ammonia but that sustained operation in the high pressures where arcjet thrusters operate (of the order of 1000 Torr) is difficult to achieve. The concept of using contoured, fine wire meshes attached across the screen grid apertures in an ion thruster to effect control of the ion beam divergence is introduced. The concept is compared to conventional (free sheath) ion extraction and is shown to be potentially attractive. The performance related effects of changing the anode and cathode locations and of interchanging hollow cathode and refractory filament electron sources within an 8-cm diameter, argon, ring cusp ion thruster discharge chamber are examined. The effects induced in discharge chamber performance by changes in magnetic field strength and configuration and in propellant flow distribution are also measured. Results are presented in terms of changes in the parameters that describe the effectiveness of primary electron utilization and ion extraction into the beam. The apparatus and instrumentation used to study hollow cathode operation at high electron emission levels (of the order of 100 A) is described. Wilbur, Paul J. Unspecified Center ARC JET ENGINES; ELECTROSTATIC ENGINES; ION PROPULSION; RESEARCH MANAGEMENT; AMMONIA; ARGON; FILAMENTS; HOLLOW CATHODES; ION BEAMS; MAGNETIC FIELDS; OPTICS; REFRACTORY MATERIALS...
Author: Dan M. Goebel
Publisher: John Wiley & Sons
ISBN: 0470436263
Category : Technology & Engineering
Languages : en
Pages : 528
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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: Jeffery M. Monheiser
Publisher:
ISBN:
Category : Electric propulsion
Languages : en
Pages : 0
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