Laboratory Test of Sustained Arc between Back Surface of Solar Array Panel and Power Cable Delu Qu; Tomoki Kitamura; Satoshi Hosoda; Jeongho Kim; Mengu Cho(KIT)

摘要

In the Low Earth Orbit, many arcs occur on substrate of solar array panel due to plasma interaction. We used solar array coupon with back surface made of CFRP (Carbon Fiber-Reinforced Plastics) in an experiment. Because the CFRP substrate had many triple junctions, primary arcs occurred frequently. If the cable has cracks, a primary arc near the cracks led to permanent sustained arc between the cable and the substrate. The experiment was carried out far 7 types of cracks. We calculated distance between the nearest crack and sustained arc site. This paper reports the experimental results.