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http://dx.doi.org/10.5140/JASS.2004.21.2.153

LAUNCH OPPORTUNITIES FOR JUPITER MISSIONS USING THE GRAVITY ASSIST  

송영주 (연세대학교 천문우주학과)
유성문 (연세대학교 천문우주학)
박은서 (연세대학교 천문우주학)
박상영 (연세대학교 천문우주학)
최규홍 (연세대학교 천문우주학)
윤재철 (한국항공우주연구)
임조령 (한국항공우주연구)
김방엽 (한국항공우주연구)
김한돌 (한국항공우주연구)
Publication Information
Journal of Astronomy and Space Sciences / v.21, no.2, 2004 , pp. 153-166 More about this Journal
Abstract
Interplanetary trajectories using the gravity assists are studied for future Korean interplanetary missions. Verifications of the developed softwares and results were performed by comparing data from ESA's Mars Express mission and previous results. Among the Jupiter exploration mission scenarios, multi-planet gravity assist mission to Jupiter (Earth-Mars-Earth-Jupiter Gravity Assist, EMEJGA trajectory) requires minimum launch energy ($C_3$) of 29.231 $Km^2$/$S^2$ with 4.6 years flight times. Others, such as direct mission and single-planet(Mars) gravity assist mission, requires launch energy ($C_3$) of 75.656 $Km^2$/$S^2$ with 2.98 years flight times and 63.590 $Km^2$/$S^2$ with 2.33 years flight times, respectively. These results show that the planetary gravity assists can reduce launch energy, while EMEJGA trajectory requires the longer flight time than the other missions.
Keywords
Jupiter; interplanetary trajectory design; gravity assist;
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