| タイトル | The Spartan 1 mission |
| 著者（英） | Lucid, S. W.; Fabian, J. M.; Zimmermann, D.; Brandenstein, D. C.; Shrewsberry, D. J.; Creighton, J. O.; Cruddace, R. G.; Nagel, S. R.; Fenimore, E. E.; Gutschewski, G. |
| 著者所属（英） | NASA Kennedy Space Center|NASA Johnson Space Center|Anser Analytic Services, Inc.|Hulburt (E. O.) Center for Space Research|NASA Goddard Space Flight Center|Los Alamos National Lab. |
| 発行日 | 1990-05-01 |
| 言語 | eng |
| 内容記述 | The first Spartan mission is documented. The Spartan program, an outgrowth of a joint Naval Research Laboratory (NRL)/National Aeronautics and Space Administration (NASA)-Goddard Space Flight Center (GSFC) development effort, was instituted by NASA for launching autonomous, recoverable payloads from the Space Shuttle. These payloads have a precise pointing system and are intended to support a wide range of space-science observations and experiments. The first Spartan, carrying an NRL X-ray astronomy instrument, was launched by the orbiter Discovery (STS51G) on June 20, 1985 and recovered successfully 45 h later, on June 22. During this period, Spartan 1 conducted a preprogrammed series of observations of two X-ray sources: the Perseus cluster of galaxies and the center of our galaxy. The mission was successful from both on engineering and a scientific viewpoint. Only one problem was encountered, the attitude control system (ACS) shut down earlier than planned because of high attitude control system gas consumption. A preplanned emergency mode then placed Spartan 1 into a stable, safe condition and allowed a safe recovery. The events are described of the mission and presents X-ray maps of the two observed sources, which were produced from the flight data. |
| NASA分類 | ASTRONAUTICS (GENERAL) |
| レポートNO | 90A33419 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/356509 |
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