TY - GEN
T1 - Lessons Learned from On-orbit Gyroscope Malfunction and Recovery Operation of Microsatellite RISESAT
AU - Fujita, Shinya
AU - Kuwahara, Toshinori
AU - Kibune, Kazuki
AU - Shiraishi, Naoya
AU - Sato, Yuji
AU - Sakamoto, Yuji
AU - Kurihara, Junichi
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number JP21K14342. The RISESAT project is supported by Innovative Satellite Technology Demonstration Program of JAXA.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - The 50-kg-class Earth observation satellite "RISESAT"is a microsatellite developed mainly by Tohoku University and Hokkaido University, and was successfully launched into orbit by the Epsilon Launch Vehicle No. 4 on January 18, 2019. However, on June 11, 2019, about five months after launch, the three-axis fiber-optic gyroscope (FOG) for attitude control experienced a malfunction, making angular velocity measurement around the satellite's Z-axis unavailable. In this paper, we report our lessons learned on how to solve the single-axis failure of the FOG, which was not expected when RISESAT was developed, by combining the existing functions of the attitude control software. Due to the failure of the FOG, experiments that require high attitude control accuracy, such as high-resolution multispectral observation and laser communication, are now impossible. However, valuable observations such as oceanographic observations and on-orbit monitoring of the radiation environment are still being carried out on a daily basis as of September 2021, more than two years after launch.
AB - The 50-kg-class Earth observation satellite "RISESAT"is a microsatellite developed mainly by Tohoku University and Hokkaido University, and was successfully launched into orbit by the Epsilon Launch Vehicle No. 4 on January 18, 2019. However, on June 11, 2019, about five months after launch, the three-axis fiber-optic gyroscope (FOG) for attitude control experienced a malfunction, making angular velocity measurement around the satellite's Z-axis unavailable. In this paper, we report our lessons learned on how to solve the single-axis failure of the FOG, which was not expected when RISESAT was developed, by combining the existing functions of the attitude control software. Due to the failure of the FOG, experiments that require high attitude control accuracy, such as high-resolution multispectral observation and laser communication, are now impossible. However, valuable observations such as oceanographic observations and on-orbit monitoring of the radiation environment are still being carried out on a daily basis as of September 2021, more than two years after launch.
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U2 - 10.1109/SII52469.2022.9708894
DO - 10.1109/SII52469.2022.9708894
M3 - Conference contribution
AN - SCOPUS:85126256201
T3 - 2022 IEEE/SICE International Symposium on System Integration, SII 2022
SP - 126
EP - 131
BT - 2022 IEEE/SICE International Symposium on System Integration, SII 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE/SICE International Symposium on System Integration, SII 2022
Y2 - 9 January 2022 through 12 January 2022
ER -