Ion engines cruise of Hayabusa to Itokawa - Trajectory synthesis and results

Masatoshi Matsuoka, Takashi Kominato, Ju N.ichiro Kawaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The MUSES-C[1] was launched on May 9th, 2003. It was renamed "Hayabusa" (falcon in Japanese). The spacecraft is a kind of technology demonstrator with five key technologies including the use of ion engines in interplanetary cruise as a primary propulsion means. After the flight of 2 years, Hayabusa arrived at the asteroid 1998SF36 (It was renamed "Itokawa") on Sep 12th, 2005. This paper presents the trajectory synthesis technique and results for Hayabusa. For this Hayabusa's trajectory synthesis using the electrical propulsion, it was important to allow enough time for the electrical propulsion operation for assuring the margin. And taking the multi-staged approach made it easier to cope with the problems that unexpectedly happened. Hayabusa's Trajectory Synthesis actually incorporated and demonstrated these points, and had coped with and had overcome all the difficulties, incidents such as the loss of reaction wheels (RW) and finally and successfully achieved the rendezvous with Itokawa.

Original languageEnglish
Title of host publicationSpaceflight Mechanics 2006 - Proceedings of the AAS/AIAA Space Flight Mechnaics Meeting
Number of pages13
Publication statusPublished - 2006
Externally publishedYes
EventSpaceflight Mechanics 2006 - AAS/AIAA Space Flight Mechnaics Meeting - Tampa, FL, United States
Duration: 2006 Jan 222006 Jan 26

Publication series

NameAdvances in the Astronautical Sciences
Volume124 II
ISSN (Print)0065-3438


ConferenceSpaceflight Mechanics 2006 - AAS/AIAA Space Flight Mechnaics Meeting
Country/TerritoryUnited States
CityTampa, FL

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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