Frequency analysis of a reflector that is foldable as compact and can be opened automatically

Abstract

In this study, design and product of ~ scaled mode of a composite reflector, which can be used on small satellites that have 6 m diameter in full-scale version and is thought to be worked in Ku frequency band range, has been practiced. Its reflector has been incited in different frequencies by using shaker. Resonance frequencies have been measured in 4 end points of reflector and in center. By connecting the reflector vertically and with elastic materials, mode shape has been determined by acceleration receivers from its 20 points. 6 modes have been obtained between 2,8-15,80 Hz. Finite elements method is in accord with frequency values that have been found experimentally.!t has been observed that excitations from the middle point of reflector surge to all surfaces. It has been seen that frequency values in the end points of reflector are less than those in the middle point.