Abstract

According to the development plan for the Korea Space Launch Vehicle, a performance verification satellite will be installed in the launch vehicle in 2021. In addition, three payloads, including a small electrically heated thermoelectric generator (ETG), will be developed and installed in the satellite. In particular, a small ETG has been developed by the Korea Atomic Energy Research Institute for the purpose of evaluating the characteristics of the ETG in the space environment prior to the development of a radioisotope thermoelectric generator for lunar missions. In this study, shock and vibration tests were carried out to check whether the ETG can endure the launch environment of the spacecraft. In addition, a thermal cycle test and a thermal vacuum test were conducted to check whether the ETG maintains its performance, even at drastic temperature changes, which can be applied to the ETG in space. Finally, a periodic performance test was carried out to measure the degradation level of the small ETG.

摘要

根据韩国航天运载火箭的发展计划，将于2021年在运载火箭中安装性能验证卫星。此外，还将开发并安装三个有效载荷，包括小型电加热热电发电机（ETG）。卫星。特别是，韩国原子能研究所开发了一种小型ETG，目的是在开发用于登月任务的放射性同位素热电发生器之前，评估太空环境中ETG的特性。在这项研究中，进行了冲击和振动测试，以检查ETG是否可以承受航天器的发射环境。此外，还进行了热循环测试和热真空测试，以检查ETG是否保持其性能，即使温度变化剧烈，也可以应用于太空中的ETG。最后，进行了定期性能测试以测量小型ETG的降解水平。