Ensuring the structural safety of a deployable solar panel under a severe launch vibration environment is one of the important\nfactors for a successful CubeSat mission. A CubeSatâ??s deployable solar panel proposed in this study is effective to guarantee the\nstructural safety of solar cells by attenuating launch loads owing to the superior damping characteristic achieved by a\nmultilayered stiffener with viscoelastic acrylic tapes. The demonstration model of 3U CubeSatâ??s deployable solar panel was\nfabricated and tested to validate the effectiveness of the proposed design. The basic dynamic characteristics of the solar panel\nwere measured through free-vibration tests according to the various layers of the stiffener. Moreover, the characteristics of the\ndeployed solar panel were measured and investigated under various temperatures to predict its capability under in-orbit\noperation. The effectiveness of the proposed design for launch vibration attenuation was demonstrated through qualification\nlevel sine and random vibration tests.
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