Simulation of Erosion and Contamination of Spacecraft Surfaces Induced by Plasma Thruster Jet

Details Simulation of Erosion and Contamination of Spacecraft Surfaces Induced by Plasma Thruster Jet Simulation of Erosion and Contamination of Spacecraft Surfaces Induced by Plasma Thruster Jet

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e.102n&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

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Theoretical and experimental results permitting to predict erosion and contaminating effects induced by plasma thruster jet are presented. Numerical models, describing main phenomena of jet-surface interaction, are described. In particular, fluence impact on sputtering performance, microrelief formation, various mechanisms of the sputtered material mass transfer are considered. Experimental techniques to determine interaction parameters - sputtering coefficients and indicatrix as a function of a fluence and ion incidental angle - are developed. The investigation has been carried out on MAI (Moscow Aviation Institute) test facility (Department 208 - Electro propulsion and Space power plants). The test facility has vacuum chamber with 2 m3 , ion source (different type ions), diagnostic equipment, specially designed for this type of the investigation. The results of the investigations were used in the spacecraft designing done by NPO PM. In particular, using obtained information, it was calculated needed strengthening of outer layer of the SC SESAT screen- vacuum isolation, securing its resistance ability in the thruster's jet. Developed procedures can be used for any type of the SC, on board which a plasma thruster is used.

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