Computer Science
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.845m&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Computer Science
Scientific paper
This paper addresses electron and ion current collection on the International Space Station (ISS). A theoretical model of spacecraft charging is presented and the basis for its theoretical development discussed. A review of on-orbit ISS measurements of ISS potentials with and without an operating Plasma Contactor Unit is discussed. Additionally, correlations of in-orbit measurements with various ionospheric properties, i.e. electron temperature, plasma concentration, vxB etc., are discussed. It is shown how these on-orbit measurements are utilized in developing the theoretical model. The theoretical model accounts for orbital conditions, solar array shunting/unshunting, vehicle attitude and solar array position, ionosphereric properties, etc. Calculational results for the theoretical model are compared against available flight data for the exiting ISS configuration. Additionally, predictions are made for future ISS mission builds. Sensitivities of model predictions to expected variations of ionospheric properties are also examined.
Barsamian H. R.
Kern John W.
Koontz S.
Mikatarian Ron
Roussel J.-R.
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