Friction drive and bogies for OWL's main axes: technological step backwards or cost effective alternative

Enzo Brunetto; Franz Koch; F. Biancat Marchet; Martin Dimmler

doi:10.1117/12.459931

30 January 2003 Friction drive and bogies for OWL's main axes, technological step backwards or cost effective alternative?

Enzo Brunetto, Franz Koch, F. Biancat Marchet, Martin Dimmler

Author Affiliations +

Proceedings Volume 4840, Future Giant Telescopes; (2003) https://doi.org/10.1117/12.459931
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The drive and bearing technologies have a major impact on the static and dynamic performances of a steerable telescope. The costs related to the complexity of the design and its Reliability, Availability, Maintainability and Safety (RAMS) are not negligible. The design constraints of Extremely Large Telescopes (ELT) depart from those applicable to the current generation of 8 to 10 meter class telescopes, thus suggesting that alternative solutions should be investigated. This paper discusses the feasibility of implementing a design based on friction drives and bogies, tailored to OWL’s azimuthal and altitude degrees of freedom. The estimated static and dynamic performance of the mechanical structure, the achievable angular resolution, the optimal distribution of loads and stresses, the RAMS performance and finally its cost efficiency, make this solution particularly attractive.

Citation Download Citation

Enzo Brunetto, Franz Koch, F. Biancat Marchet, and Martin Dimmler "Friction drive and bogies for OWL's main axes, technological step backwards or cost effective alternative?", Proc. SPIE 4840, Future Giant Telescopes, (30 January 2003); https://doi.org/10.1117/12.459931

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