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The two antenna transporters of the ALMA Observatory are used to relocate 12-meter antennas and to move them
between low (3000m) and high altitude site (5000m). When analyzing the dynamic response of the transporters to road
ripple of critical height and inter-distance, it turned out that transporter accelerations exceeding the seismic accelerations
cannot be excluded. This is considered as a remote risk however with possibly catastrophic consequences for the
equipped antennas. The problem was analyzed by ESO experts for dynamic simulations and an additional damping
system was designed to limit the loads to acceptable values.
This paper describes the design of the additional damping system including its concept, the model-based design using
dynamic simulations and verification tests on site.
M. Dimmler,Max Kraus,Lothar Kern, andNicola Di Lieto
"Vibration damping system for ALMA antenna transporters", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77391F (21 July 2010); https://doi.org/10.1117/12.856862
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M. Dimmler, Max Kraus, Lothar Kern, Nicola Di Lieto, "Vibration damping system for ALMA antenna transporters," Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77391F (21 July 2010); https://doi.org/10.1117/12.856862