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- W2951173853 abstract "Small satellites are gaining popularity in the spaceindustry and reduction in spacecraft size requires scaling down itspropulsion system. Low-power electric propulsion poses a uniquechallenge due to various scaling penalties. Of high-performanceplasma thrusters, the radio-frequency ion engine is most likely tosucceed in scaling as it does not require an externally appliedmagnetic field and is structurally simple to construct. As part ofa design package an original two-dimensional simulation code forradio-frequency ion engine discharge is developed. The code modelsthe inductive plasma with fluid assumption and resolves theelectromagnetic wave in the time domain. Major physical effectsconsidered include magnetic field diffusion and coupling, plasmacurrent induction and ambipolar plasma diffusion. The dischargesimulation is benchmarked with data from an experimental thruster.It shows excellent performance in predicting the load power and theinternal power loss of the plasma. Predictability of anode currentdepends on the operating power but is generally adequate. Optimumskin depth on the order of half of chamber radius is suggested bythe simulation. The code also demonstrates excellent scalingability as it successfully predicts the performance of a smallerthruster with errors less than 10%. Using the code a briefoptimization study was conducted and the results suggest themaximum thrust efficiency does not necessarily occur at the samefrequency that maximizes the power coupling efficiency of thematching circuit." @default.
- W2951173853 created "2019-06-27" @default.
- W2951173853 creator A5064645962 @default.
- W2951173853 date "2010-01-01" @default.
- W2951173853 modified "2023-09-26" @default.
- W2951173853 title "Two-dimensional numerical modeling of Radio-Frequencyion engine discharge; 2-D numerical modeling of Radio-Frequency ion enginedischarge; Two-dimensional numerical modeling of RF ion enginedischarge" @default.
- W2951173853 hasPublicationYear "2010" @default.
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