Study on Reference Trajectory for the Lunar Lander

Computer Science – Performance

Scientific paper

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Lunar Exploration, Orbit Insertion, Manned Space Flight, Trajectory Analysis, Propulsion System Performance, Japanese Space Program, Geosynchronous Orbits, Samples, Lunar Surface Vehicles

Scientific paper

NASDA is at present studying on the lunar exploration and development scenarios consisting of a progressive process of unmanned exploration, manned exploration, and exploitation. The scenario for unmanned exploration is composed of three missions: lunar orbiter, rover, and the sample return. While the systems/subsystems of a lunar orbiter and the specifications of onboard sensors have been studied, research and development efforts have focused on technologies for lander/ rover following orbital missions. Although the Bus Unit of the lunar explorer can be applied on the existing technologies earth observation and geostationary satellites, some sensors and orbit insertion technologies need to be newly developed based on these satellites. In addition, various new developed technologies will be required for lander/rover, the sample return system, and human exploration. For example, NASDA does not have landing technology which is common to those missions. The progress from the orbiter phase to the lander/rover phase largely depends on development of the landing technology. It will be essential to continue R&D efforts on landing technology for its timely and appropriate availability.

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