Track creep: experience, modeling efforts, and consequences of work done at the 100 meter Green Bank Telescope

Dennis Egan

doi:10.1117/12.915263

10 November 2011 Track creep: experience, modeling efforts, and consequences of work done at the 100 meter Green Bank Telescope

Dennis Egan

Author Affiliations +

Proceedings Volume 8336, Integrated Modeling of Complex Optomechanical Systems; 83360M (2011) https://doi.org/10.1117/12.915263
Event: Integrated Modeling of Complex Optomechanical Systems, 2011, Kiruna, Sweden

Abstract

This document will discuss the efforts and progress made in understanding, modeling, quantifying, and mitigating the stresses and behavior induced by creep motion in the 100 meter Green Bank Telescope's (GBT) azimuth track. From its commissioning the GBT azimuth track has been plagued by the side effects of creep motion induced by the 1,000,000 lb rolling load of each of its wheels. This paper will discuss the degrading effects of creep motion, similarities seen in other track systems, and the mitigation efforts employed to maintain track performance. It will also discuss efforts to understand and numerically model the track behavior, efforts to bound stresses using classical calculations, and suggest the direction for further work.

Citation Download Citation

Dennis Egan "Track creep: experience, modeling efforts, and consequences of work done at the 100 meter Green Bank Telescope", Proc. SPIE 8336, Integrated Modeling of Complex Optomechanical Systems, 83360M (10 November 2011); https://doi.org/10.1117/12.915263

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