Indium field emission electric propulsion microthruster experimental characterization

Indium liquid metal ion sources have been flying for more than 10 years on a variety of spacecraft for spacecraft potential control and as the core element of mass spectrometers. Since 1995, a dedicated indium field emission electric propulsion (In-FEEP) thruster has been under development and recently passed a 2000-h endurance test. The In-FEEP thruster is a micropropulsion device for the 1-100 muN thrust range with low thrust noise and high resolution. The latest performance characteristics including direct thrust measurements and beam profiles are summarized. This information is very important for many upcoming missions that require ultraprecise drag-free control such as the Gravity Field and Steady-State Ocean Circulation Mission, LISA, Terrestrial Planet Finder/Darwin, or SMART-2.
Publisher
AMER INST AERONAUT ASTRONAUT
Issue Date
2004
Language
ENG
Keywords

METAL ION-SOURCE

Citation

JOURNAL OF PROPULSION AND POWER, v.20, no.2, pp.211 - 218

ISSN
0748-4658
DOI
10.2514/1.9247
URI
http://hdl.handle.net/10203/84594
Appears in Collection
ME-Journal Papers(저널논문)
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