Evaluation of Guidance and Control System of Unmanned Spacecraft for Precise Lunar Landing
- Paper number
IAC-05-A3.2.B.03
- Author
Mr. Tetsujiro Ninomiya, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Coauthor
Mr. Yoshiro Hamada, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Coauthor
Mr. Kentaro Hayashi, Mistubishi Space Software Co. Ltd., Japan
- Coauthor
Dr. Yasuhiro Katayama, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Coauthor
Dr. Shujiro Sawai, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan
- Coauthor
Mr. Yasuo Shinomiya, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Coauthor
Dr. Seiya Ueno, Yokohama National University, Japan
- Coauthor
Mr. Masayuki Yamamoto, Japan Aerospace Exploration Agency (ISTA/JAXA), Japan
- Year
2005
- Abstract
The moon has been recognized as an important destination for space science and exploration and especially in recent years, many countries take interests in it. National Aeronautics and space administration (NASA) presented a new policy for space exploration including human expedition to the lunar surface. European Space Agency (ESA) and other agencies have also planned to send spacecraft to the moon and some of the projects are ongoing. \newline Japan Aerospace Exploration Agency (JAXA) has promoted lunar orbiter projects; LUNAR-A and SELENE. Additionally, a lunar landing mission has also been studied in JAXA and other organizations. In this study, the spacecraft lands on the moon and carries out some scientific missions. One candidate of the landing point is the central peak of the crater. To achieve this purpose, the spacecraft are required to land precisely on the site where scientifically interesting features are expected and to avoid obstacles (such as large rocks, small craters, and steep slopes) in order to prevent stumbling at the time of landing. Thus, one of the main subjects of the study is precise and safe landing on the moon. \newline This paper is concerned with the evaluation of the guidance and control systems for precise and safe landing on the moon. In this mission, the landing point is determined beforehand, using Digital Elevation Map (DEM) which is supposed to be obtained by SELENE. The DEM is so rough that it is impossible to idetify all obstacles which might cause landing failure. Therefore, the spacecraft has the obstacle detection system and the landing trajectory is generated during the descent to the moon. In this phase, the amount of fuel is tightly limited due to the payload requirement so that the guidance strategy is highly required to reduce the fuel consumption. \newline Once the guidance and control systems are designed, it is important to evaluate their ability. Monte Carlo simulation method is applied for the evaluation.
- Abstract document
- Manuscript document
IAC-05-A3.2.B.03.pdf (🔒 authorized access only).
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