Plasma-Surface Interactions and Life-Limiting Phenomena in Ion Engines
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Engineering topics
Publications and source records attributed to Polk, J..
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This article describes the configuration of the discharge chamber and design and fabrication of the grids and field emission array (FEA) cathodes.
Replacing hollow and filament cathodes with field emitter (FE) cathodes could significantly improve the scalability, power, and performance of some meso- and microscale Electric Propulsion (EP) systems. This article discusses the motivation and challenges of integrating of FE and Electric Propulsion systems.
This paper provides an overview of the system and presents the first flight validation data on an ion propulsion system in interplanetary space.
A long-duration test of the Deep Space 1 (DS1) flight spare thruster (FT2) is presently being conducted. To date, the thruster has accumulated over 6700 hours of operation.
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NASA's New Millennium Deep Space One (DS1) is the first interplanetary spacecraft operated on solar electric propulsion.
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Replacing hollow and filament cathodes with field emitter (FE) cathodes could significantly improve the scalability, power, and performance of some meso- and microscale Electric Propulsion (EP) systems.
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After having been in development for many years at Glenn Research Center, the NASA design 30 cm ring-cusp xenon ion engine was launched on the DS1 spacecraft on 24 October 1998 from the Kennedy Space Center in Florida.
The ST4/Champollion mission is designed to rendezvous with and land on the comet Tempel 1 and return data from the first-ever sampling of a comet surface.
Deep Space 1 is the first interplanetary spacecraft to use an ion propulsion system for the primary delta-v maneuvers. The purpose of the mission is to validate a number of technologies, including ion propulsion and a high degree of spacecraft autonomy, on a flyby of an asteroid and two comets.
Ground testing of the DS1 flight spare thruster (FT2) is presently being conducted.
The sputtering yield of molybdenum under xenon ion bombardment was mesured using a Quartz Crystal Microbalance.
The launch of NASA's New Millennium Deep Space One (DS1) mission on October 24, 1998 marks the beginning of interplanetary science missions using spacecraft operated on solar electric propulsion.