DKIST enclosure modeling and verification during factory assembly and testing

Ibon Larrakoetxea; William McBride; Heather K. Marshall; Gaizka Murga

doi:10.1117/12.2059083

4 August 2014 DKIST enclosure modeling and verification during factory assembly and testing

Ibon Larrakoetxea, William McBride, Heather K. Marshall, Gaizka Murga

Proceedings Volume 9150, Modeling, Systems Engineering, and Project Management for Astronomy VI; 91501S (2014) https://doi.org/10.1117/12.2059083
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The Daniel K. Inouye Solar Telescope (DKIST, formerly the Advanced Technology Solar Telescope, ATST) is unique as, apart from protecting the telescope and its instrumentation from the weather, it holds the entrance aperture stop and is required to position it with millimeter-level accuracy. The compliance of the Enclosure design with the requirements, as of Final Design Review in January 2012, was supported by mathematical models and other analyses which included structural and mechanical analyses (FEA), control models, ventilation analysis (CFD), thermal models, reliability analysis, etc. During the Enclosure Factory Assembly and Testing the compliance with the requirements has been verified using the real hardware and the models created during the design phase have been revisited. The tests performed during shutter mechanism subsystem (crawler test stand) functional and endurance testing (completed summer 2013) and two comprehensive system-level factory acceptance testing campaigns (FAT#1 in December 2013 and FAT#2 in March 2014) included functional and performance tests on all mechanisms, off-normal mode tests, mechanism wobble tests, creation of the Enclosure pointing map, control system tests, and vibration tests. The comparison of the assumptions used during the design phase with the properties measured during the test campaign provides an interesting reference for future projects.

Citation Download Citation

Ibon Larrakoetxea, William McBride, Heather K. Marshall, and Gaizka Murga "DKIST enclosure modeling and verification during factory assembly and testing", Proc. SPIE 9150, Modeling, Systems Engineering, and Project Management for Astronomy VI, 91501S (4 August 2014); https://doi.org/10.1117/12.2059083

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KEYWORDS

Camera shutters

Mathematical modeling

Systems modeling

Control systems

Chemical elements

Telescopes

Calibration

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