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oai:jaxa.repo.nii.ac.jp:00008104 2023-06-21T07:28:24Z 1543:1562:1577 1887:1891

衛星用電力ケーブル間におけるアークトラッキングに関する基礎研究 Basic laboratory test of arcing on satellite power cables Qu, Delu 北村, 倫基 麻生, 誠司 奥村, 哲平 細田, 聡史 Kim, Jeongho Cho, Mengu Qu, Delu Kitamura, Tomoki Aso, Seiji Okumura, Teppei Hosoda, Satoshi Kim, Jeongho Cho, Mengu metadata only access 送電 電力ケーブル 宇宙機帯電 放電 持続放電 ハーネス ポリイミド樹脂 アーク放電 太陽電池 CFRP power transmission power cable spacecraft charging electric discharge sustained arc harness polyimide resin arc discharge solar cell CFRP In the Low Earth Orbit, cracks are often made at the power cable of a satellite by debris, heat cycle, etc. Triple junctions are formed from these cracks. Then arcs may occur. On a satellite, the cables of HOT and RTN are placed close to each other in many cases. Therefore, sustained arc may occur if arc tracking is formed. If sustained arc takes place, the cable is carbonized and burned out. At the worst case, it will spread to neighboring cables. If it becomes so, the satellite may lose power from the solar panel. The purpose of this study is to investigate the conditions by which self-sustained electrical discharge is generated on cables. An experiment was carried out in a vacuum chamber which simulated Low Earth Orbit environment. A substrate made of CFRP (Carbon Fiber-Reinforced Plastics) was used. The experiment was carried out by placing the cables with cracks on the CFRP surface or on Kapton facesheet over the CFRP. Sustained arcs were observed in both environments. In the test of simulating front surface, sustained arc occurred when the condition of the string voltage was 200 V and the current of line was 2.7 A. In the test of simulating back surface, because the CFRP substrate was exposed, trigger arcs occurred frequently. The arc plasma led to the sustained arc between the cable and the substrate. 資料番号: AA0049120018 宇宙航空研究開発機構宇宙科学研究本部 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) 2005-06 jpn conference paper https://jaxa.repo.nii.ac.jp/records/8104 第24回宇宙エネルギーシンポジウム　平成16年度 The Twenty-fourth Space Energy Symposium March 7, 2005 87 91