Identification and Simulation of Deformed State of "Radiostron" Space Radio Telescope Mirror Segment in Thermal-Vacuum Testing

Thermal-vacuum testing results are studied to analyze the influence of vacuum and temperature fields on the structure of "Radiostron" space radio telescope mirror segment. The technique is developed that allows to exclude the influence of the mirror segment suspension system movability and the base line change. The numerical simulation of the mirror segment deformation has been conducted in the testing. The procedure is developed to identify deformation factors caused by the composite materials nonuniformity.