「小型ソーラー電力セイル実証機IKAROSの加速度モデルとその推定について」
＊山口智宏（総研大）、三桝裕也、津田雄一（JAXA）、谷口正（富士通）、池田人、吉川真（JAXA）
「Solar sail acceleration modeling and its estimation for IKAROS spacecraft」
*T.Yamaguchi(The Graduate University for Advanced Studies), Y.Mimasu, Y.Tsuda, H.Ikeda, M.Yoshikawa(JAXA), T.Taniguchi(FUJITSU)
This paper investigates the modeling of solar sail acceleration for solar sail demonstrator IKAROS. The modeling of solar sail acceleration is a key element for future deep space exploration using solar sail because it impacts the  fuel budget and flexibility of the operation. Estimation of the solar sail acceleration model in space is required because the solar sail have large uncertainty due to the flexible membrane. Since the solar sail wrinkles after the deployment and reorientations, it is difficult to configure the model before the launch. This research concentrates on the estimation of solar sail acceleration model using the radiometric tracking data from one year operation of IKAROS spacecraft.