Trajectories and attitudes of an asteroid sample return spacecraft "Hayabusa" during touchdowns on Itokawa

Saika Aida, Yusuke Shibasaki, Ke N.ichi Shirakawa, Hideo Morita, Ju N.ichiro Kawaguchi

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

On May 9th of 2003, the Institute of Space and Astronautical Science (ISAS/JAXA) launched an asteroid sample return spacecraft called "Hayabusa" (named after falcon). Hayabusa aims for the world's first sample return from an asteroid along with demonstrations of several space engineering technologies for sample-return. Samples from an asteroid provide us clues as to origins of planets and asteroids. After more than two years' cruising phase by its ion engines, it arrived at Itokawa (Asteroid 25143) on September 12th of 2005. In the vicinity of the asteroid, Hayabusa succeeded in detail asteroid observations and performed five times' descent flights including twice landing operation on Itokawa to obtain asteroid samples. Its Earth return is expected around 2010. In this research, the Hayabusa trajectory and attitude during its touchdowns are discussed in detail. In the initial descent operation, above the altitude of 250 m, the guidance and navigation was conducted by determining the position using Itokawa images. After that, Hayabusa descended to Itokawa autonomously. The trajectory at this phase has not been revealed yet. It is because Itokawa images and navigation sensor data were not fully obtained. However, as to the first landing, several kinds of useful sensor data exist, though they are fragmentary. The trajectory and attitude of the final descent phase during the first landing operation was estimated by combining information from these sensor data. The Itokawa 3D shape model and the T/M image on the Itokawa ground surface were also used. Then, the velocity variation due to the touchdown were estimated.

本文言語English
ホスト出版物のタイトルAIAA 57th International Astronautical Congress, IAC 2006
出版社American Institute of Aeronautics and Astronautics Inc.
ページ9318-9325
ページ数8
ISBN(印刷版)9781605600390
DOI
出版ステータスPublished - 2006
外部発表はい
イベントAIAA 57th International Astronautical Congress, IAC 2006 - Valencia, Spain
継続期間: 2006 10 22006 10 6

出版物シリーズ

名前AIAA 57th International Astronautical Congress, IAC 2006
14

Other

OtherAIAA 57th International Astronautical Congress, IAC 2006
国/地域Spain
CityValencia
Period06/10/206/10/6

ASJC Scopus subject areas

  • 宇宙惑星科学
  • 航空宇宙工学

フィンガープリント

「Trajectories and attitudes of an asteroid sample return spacecraft "Hayabusa" during touchdowns on Itokawa」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル