日本地球惑星科学連合2018年大会

講演情報

[EE] Eveningポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM12] Space Weather, Space Climate, and VarSITI

2018年5月24日(木) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:片岡 龍峰(国立極地研究所)、Antti A Pulkkinen (NASA Goddard Space Flight Center)、草野 完也(名古屋大学宇宙地球環境研究所、共同)、塩川 和夫(名古屋大学宇宙地球環境研究所)

[PEM12-P07] Development of an estimation method of spacecraft surface potential for a real-time spacecraft risk assessment

川内 諒太1寺岡 毅1、*中村 雅夫1長妻 努2石井 守2 (1.大阪府立大学、2.国立研究開発法人 情報通信研究機構)

キーワード:宇宙機表面帯電、宇宙天気、衛星リスク評価

Spacecraft anomalies are often induced by surface charging and resultant discharging arcs. We are developing a quick estimation method of spacecraft surface potential for the Space Environment Customized Risk Estimation for Spacecraft (SECURES) of the space weather forecast Project for Solar-Terrestrial Environment Prediction (PSTEP). We create lookup tables of the surface potential of the target spacecraft for combinations of plasma temperatures and densities using a spacecraft charging analysis software in advance and/or observational results. By interpolation from the lookup tables, we can estimate the surface potential on demand for any given on-orbit plasma environment. The spacecraft risk assessment can be accomplished by additional information about the experimental discharging differential potential of the surface materials. We will introduce the current status of development of our method.