Bulletin of the Korean Space Science Society (한국우주과학회:학술대회논문집(한국우주과학회보))

The Korean Space Science Society (한국우주과학회)
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OPTIMAL TRAJECTORY DESIGN FOR HUMAN OUTER PLANET EXPLORATION

  • Park Sang-Young (Yonsei University) ;
  • Seywald Hans (Analytical Mechanics Associates, Inc.) ;
  • Krizan Shawn A. (Analytical Mechanics Associates, Inc.) ;
  • Stillwagen Frederic H. (NASA Langley Research Center)
  • Published : 2004.10.01
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Abstract

An optimal interplanetary trajectory is presented for Human Outer Planet Exploration (HOPE) by using an advanced magnetoplasma spacecraft. A detailed optimization approach is formulated to utilize Variable Specific Impulse Magnetoplasma Rocket (VASIMR) engine with capabilities of variable specific impulse, variable engine efficiency, and engine on-off control. To design a round-trip trajectory for the mission, the characteristics of the spacecraft and its trajectories are analyzed. It is mainly illustrated that 30 MW powered spacecraft can make the mission possible in five-year round trip constraint around year 2045. The trajectories obtained in this study can be used for formulating an overall concept for the mission.

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