Computer simulation of spacecraft/environment interaction

This report presents some examples of a computer simulation of spacecraft i nteraction with space environment. We analysed a set data on electron and i on fluxes measured in 1991-1994 on geostationary satellite GORIZONT-35. The influence of spacecraft eclipse and device eclipse by solar-cell panel on spacecraft charging was investigated. A simple method was developed for an estimation of spacecraft potentials in LEG. Effects of various particle flu x impact and spacecraft orientation are discussed. A computer engineering m odel for a calculation of space radiation is presented. This model is used as a client/server model with WWW interface, including spacecraft model des cription and results representation based on the virtual reality markup lan guage. (C) 1999 Elsevier Science Ltd. All rights reserved.