University of Tokyo School of Engineering
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第17回アストロダイナミクスシンポジウム講演後刷り集 2007
雑誌名(英)
Proceedings of 17th Workshop on JAXA Astrodynamics and Flight Mechanics
In this paper, optimum trajectories of minimum fuel consumption in Earth Transfer Orbit (ETO) for a lunar transportation system are proposed according to the flight time restricted. The lunar transportation system is the Reusable Orbital Transfer Vehicle (ROTV), which transports a spacecraft from Low Earth Orbit (LEO) to Lunar Low Orbit (LLO) and returns to LEO. It is one of the most important problems for this system to minimize fuel consumption in ETO. The reusable transportation system is superior to the expendable one by minimizing fuel consumption in ETO and utilizing the system a few times. In ETO, we discuss multi-impulse flight using electrical propulsion and aero-assisted flight using aero-braking, and the optimum trajectory control law for the ROTV is shown. The analytical suboptimum control strategy is also shown and the effect of the strategy is investigated.
Optimal trajectories in Earth Transfer Orbit for lunar transportation system
