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Titolo:
HIGH-TEMPERATURE SUPERCONDUCTING BEARINGS FOR LUNAR TELESCOPE MOUNTS
Autore:
LAMB M; MA KB; COOLEY R; MACKEY D; MENG RL; CHU CW; CHU WK; CHEN PC; WILSON T;
Indirizzi:
UNIV TEXAS,TEXAS CTR SUPERCONDUCT HOUSTON TX 77025 COMP SCI CORP CALVERTON MD 00000 NASA,LYNDON B JOHNSON SPACE CTR HOUSTON TX 77058
Titolo Testata:
IEEE transactions on applied superconductivity
fascicolo: 2, volume: 5, anno: 1995,
parte:, 1
pagine: 638 - 642
SICI:
1051-8223(1995)5:2<638:HSBFLT>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
VARIABLE MAGNETIC-FIELD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
M. Lamb et al., "HIGH-TEMPERATURE SUPERCONDUCTING BEARINGS FOR LUNAR TELESCOPE MOUNTS", IEEE transactions on applied superconductivity, 5(2), 1995, pp. 638-642

Abstract

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 mustbe 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 feasability of this application is presented.

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Documento generato il 02/12/20 alle ore 05:22:13