| タイトル | High Temperature Superconducting Bearings for Lunar Telescope Mounts |
| 本文（外部サイト） | http://hdl.handle.net/2060/19970021436 |
| 著者（英） | Chu, Ching Wu; Cooley, Rodger; Chu, Wei Kan; Wilson, Thomas; Mackey, Daniel; BuiMa, Ki; Meng, Ruling; Chen, Peter C.; Lamb, Mark |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1995-06-01 |
| 言語 | eng |
| 内容記述 | A telescope to be installed on the lunar surface in the near future must work in a cold and dusty vacuum environment for long periods without on site human maintenance. To track stars, the drive mechanism must be capable of exceedingly fine steps and repeatability. Further, the use of lightweight telescopes for obvious economic benefits burdens the requirement for stable support and rotation. Conventional contact bearings and gear drives have numerous failure modes under such a restrictive and harsh environment. However, hybrid superconducting magnetic bearings (HSMB) fit in naturally. These bearings are stable, light, passive, and essentially frictionless, allowing high precision electronic positioning control. By passive levitation, the HSMB does not wear out and requires neither maintenance nor power. A prototype illustrating the feasibility of this application is presented. |
| NASA分類 | Mechanical Engineering |
| レポートNO | 97N22411
NAS 1.15:112488
NASA-TM-112488 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/101474 |
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