10th Electric Propulsion Conference 1973
DOI: 10.2514/6.1973-1131
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An 8-cm electron bombardment thruster for auxiliary propulsion

Abstract: Thruster size, beam current level, and specific impulse trade-offs are considered for mercury electron bombardment ion thrusters to be used for north-south station keeping of geosynchronous spacecraft. An 8-cm diameter thruster operating at 2750 seconds specific impulse at thrust levels of 4.4 mN (1 mlb) to 8.9 mN (2 mlb) with a design life of 20 000 hours and 10 000 cycles is being developed. The thruster will have a dished two-grid system capable of thrust vectoring of ±10 degrees in two orthogonal direction… Show more

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Cited by 11 publications
(2 citation statements)
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“…The pulse was observed, at random, a number of times during the test and the initial breakdown voltage ranged from 10 to 13 kV. 1 As seen in Figure 3, breakdowns also occur on the negative portion of the pulse. Therefore in addition to the 10,000 positive high voltage breakdowns, there were possibly up to four times as many negative high voltage breakdowns, ranging from 4 to 7 kV.…”
Section: 000 Pulse Start Electrode Durability Testmentioning
confidence: 99%
“…The pulse was observed, at random, a number of times during the test and the initial breakdown voltage ranged from 10 to 13 kV. 1 As seen in Figure 3, breakdowns also occur on the negative portion of the pulse. Therefore in addition to the 10,000 positive high voltage breakdowns, there were possibly up to four times as many negative high voltage breakdowns, ranging from 4 to 7 kV.…”
Section: 000 Pulse Start Electrode Durability Testmentioning
confidence: 99%
“…require operational lifetimes on the order of 20 000 hours for the thrusters (ref. 1). Such an operating duration may pose problems due to sputter erosion of thruster discharge chamber components.…”
Section: Introductionmentioning
confidence: 99%