| タイトル | Stable Satellite Orbits for Global Coverage of the Moon |
| 本文（外部サイト） | http://hdl.handle.net/2060/20100021287 |
| 著者（英） | Lieb, Erica; Ely, Todd |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 2006-06-01 |
| 言語 | eng |
| 内容記述 | A document proposes a constellation of spacecraft to be placed in orbit around the Moon to provide navigation and communication services with global coverage required for exploration of the Moon. There would be six spacecraft in inclined elliptical orbits: three in each of two orthogonal orbital planes, suggestive of a linked-chain configuration. The orbits have been chosen to (1) provide 99.999-percent global coverage for ten years and (2) to be stable under perturbation by Earth gravitation and solar-radiation pressure, so that no deterministic firing of thrusters would be needed to maintain the orbits. However, a minor amount of orbit control might be needed to correct for such unmodeled effects as outgassing of the spacecraft. |
| NASA分類 | Man/System Technology and Life Support |
| レポートNO | NPO-42007 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/507072 |
