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Mission Trajectory Design using Three-Body Dynamics  

Chung, Tae-Jin (한국과학기술원 인공위성연구센터)
Lee, Na-Young (항공우주연구원 다목적3호체계팀)
Publication Information
Journal of Satellite, Information and Communications / v.5, no.2, 2010 , pp. 50-56 More about this Journal
Abstract
Most mission trajectory design technologies for space exploration have been utilized the Patched Conic Approximation which is based on Hohmann transfer in two-body problem. The Hohmann transfer trajectory is basically an elliptic trajectory, and Patched Conic Approximation consists of Hohmann transfer trajectories in which each trajectory are patched to the next one. This technology is the most efficient method when considering only one major planet at each patch trajectory design. The disadvantages of the conventional Patched Conic Approach are more fuel (or mass) needed and only conic trajectories are designed. Recent space exploration missions need to satisfy more various scientific or engineering goals, and mission utilizing smaller satellites are needed for cost reduction. The geometrical characteristics of three-body dynamics could change the paradigm of the conventional solar system. In this theoretical concept, one can design a trajectory connecting around the solar system with comparably very small energy. In this paper, the basic three-body dynamics are introduced and a spacecraft mission trajectory is designed utilizing the three-body dynamics.
Keywords
Space; Mission; three-body dynamics;
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