SOLAR ARRAY DEPLOYMENT TESTS OF KOMPSAT-2 SATELLITE

摘要

This paper presents the solar array deployment tests of an earth observation system, KOMPSAT-2 (KOrea Multi-rnPurpose SATellite). The tests are performed with no-gravity simulators in ambient and cold environmentalrnconditions. Three types of tests are performed: Small-angle deployment tests in cold environment (-80℃), fullrndeployment tests in ambient condition (22℃), and full deployment tests in ambient condition after cooling down arndeployment system. The no-gravity simulators adapt bungee cord and rail system. Two digital cameras record thernmovement of solar panels on the top of the deployment system. Small light spots are installed on top of the solarrnpanels during full deployment test in order to increase the visibility. The recorded movie files are digitally processedrnto figure out the position of each spot at every 1/30-second. Moreover, numerical models, which are generated byrncommercial software (DADS), are tuned by using recorded trajectory. The calculated acquired displacementrntrajectory successfully generates well -tuned numerical models for the design of future solar panels.