**Acknowledgements**

The authors sincerely express their gratitude to Special Duty Prof. Keiichi Hirako of Keio University who lectured about the project of artificial satellite. They are also grateful to Prof. Koike, Prof. Miyabe, Part Lecturer Matsumoto and Associate Professor Yoshida who served as the teacher and member of meetings of Mechanical Engineering Department in the PBL for first-grade students and many stakeholders who manage or cooperate the PBL as deans, successive section chiefs, other project managers (Prof. Izuru Nishikawa), staffs, TAs and students.
