Spacecraft Charging, Plume Interactions, and Space Radiation Design Considerations for All-Electric GEO Satellite Missions

Likar, Justin J.; Bogorad, A.; August, K.A.; Lombardi, Robert E.; Kannenberg, Keith; Herschitz, R.

doi:10.1109/tps.2015.2403272

Cited by 3 publications

(2 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…The primary advantage of all-electric propulsion satellites is a reduced propellant mass compared with chemical propulsion. 2 For example, SpaceX launched the first 60 satellites of its Starlink constellation in 2019.A key benefit of all-electric propulsion is that it allows launching the same number of satellites with fewer launches. 3 For Boeing, two all-electric propulsion satellites could be launched simultaneously, though one satellite was mounted on one rocket.…”

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confidence: 99%

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Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

Egawa

Yamamoto

Yamaguchi

et al. 2020

Review of Scientific Instruments

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A high-sensitivity sensor to measure titanium atom density based on time-resolved cavity ring-down spectroscopy (CRDS) was developed to monitor the wall erosion and predict the lifetime of Hall thrusters. The minimum detection limit for the sensor was dependent on the discharge current oscillation in the Hall thruster. A Volterra engine management system was employed for time-resolved measurements to develop the time-resolved CRDS system, which was synchronized to the discharge current oscillation. The results confirmed that the path-integrated number density of sputtered titanium atoms was synchronized with the discharge current oscillation. The minimum detection limit was decreased by ∼30% from 2 × 1012 to 6 × 1011 m−2.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%