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The simulated effects of space environment, in particular space radiation, on materials of spacecrafts are evaluated and discussed. Methods and tools used for evaluating this environment and its effects are described. Computer-based methods have been adopted, developed and applied to a selection of relevant problems occurring in scientific and extraterrestrial space projects. The test method that involves test planning, test and evaluation is described in principle. Special information on radiation induced outgassing is given for fluoropolymers.

As a consequence of the continuously increasing complexity of design, development and qualification of modern spacecraft subsystems, computer aided tools become increasingly important for solving the various engineering tasks in these fields. In the framework of development tasks for satellites and space stations, e.g. ERS-I/II, ROSAT, CLUSTER, SOHO, COLUMBUS-ECLSS, and HERMES a software environment has been developed at Dornier GmbH in recent years, which allows thermal analysis, thermal control and space environment control for system simulation as well as for detained component level simulation, monitoring and testdata evaluation. COSITHERM is a modular software package for the prediction of thermal radiation effects. SIMTAS can be used for detailed analysis of single system components as well as for the prediction of system response of arbitrarily connect components.