ATST systems engineering: project update and lessons learned

Details ATST systems engineering: project update and lessons learned ATST systems engineering: project update and lessons learned

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7017e...2h&link_type=abstract

Modeling, Systems Engineering, and Project Management for Astronomy III. Edited by Angeli, George Z.; Cullum, Martin J. Proc

Astronomy and Astrophysics

Astronomy

Scientific paper

The Advanced Technology Solar Telescope (ATST) project is near the end of its design and development phase and ready to begin construction. This paper describes the current status of ATST and a few of the lessons learned during design and development from a systems-engineering perspective. It highlights some of the important differences between nighttime and daytime solar observing with emphasis on the resulting impacts on telescope design and operational concepts. We have had to adopt somewhat non-standard primary mirror polish specifications to support our requirement to observe the sun's corona very close to solar limb. Our suite of image-quality error budgets are examined to show the progression of system requirements that are derived from each use case, and the value of Monte Carlo simulations as a means of controlling user expectations. We discuss PDMWorks® Enterprise and other elements of our configuration management system as well as the tools we have developed (and are developing) to document the requirements flow-down and to establish a trace-back mechanism. We expect to use this trace-back capability during contract negotiations and later in the fabrication process to quickly assess the potential impact of any exceptions to our specifications that may be requested by our vendors.

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