Ion engine plume interaction calculations for prototypical Prometheus 1
| Autor: | Mandell, M. J., Kuharski, R. A., Gardner, B. M., Katz, I., Randolph, T., Dougherty, R., Ferguson, D. C. |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | 宇宙航空研究開発機構特別資料 = JAXA Special Publication: 9th Spacecraft Charging Technology Conference. :664-671 |
| ISSN: | 1349-113X |
| Popis: | Prometheus 1 is a conceptual mission to demonstrate the use of atomic energy for distant space missions. The hypothetical spacecraft design considered in this paper calls for multiple ion thrusters, each with considerably higher beam energy and beam current than have previously flown in space. The engineering challenges posed by such powerful thrusters relate not only to the thrusters themselves, but also to designing the spacecraft to avoid potentially deleterious effects of the thruster plumes. Accommodation of these thrusters requires good prediction of the highest angle portions of the main beam, as well as knowledge of elastically scattered and charge exchange ions, predictions for grid erosion and contamination of surfaces by eroded grid material, and effects of the plasma plume on radio transmissions. Nonlinear interactions of multiple thrusters are also of concern. In this paper we describe two- and three-dimensional calculations for plume structure and effects of conceptual Prometheus 1 ion engines. Many of the techniques used have been validated by application to ground test data for the NSTAR and NEXT ion engines. Predictions for plume structure and possible sputtering and contamination effects will be presented. 資料番号: AA0049206074 レポート番号: JAXA-SP-05-001E |
| Databáze: | OpenAIRE |
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