Paper 13099-102
Paper 13099-102
GMT primary mirror thermal control system and thermal deformation modeling framework
On demand | Presented live 17 June 2024 
Abstract
Conjugate heat transfer modeling is used to estimate the front temperature distribution, thermal deformation, and differential pressure distribution of the GMT primary mirror (M1) segments. The modeling framework validates segment temperature and thermal deformation requirements and supports the M1 optical testing underway. This paper presents the various framework models, the predicted baseline performance, and a sensitivity analysis of the impact of several heat sources on the expected thermal deformation, including simulations specific to optical testing.
Presenter
GMTO Corp. (United States)
Dr. Konstantinos Vogiatzis is a Consultant.
He has been involved in the design and/or performance analysis and improvement of several ground-based observatories such as TMT, GMT, LSST, Keck, CFHT, DKIST, and Gemini, since he joined the National Optical Astronomy Observatories in 2002 and later the Thirty Meter Telescope in 2006. From 2014 to 2019 he was also the CFD Lead for the DoD user Productivity Enhancement, Technology Transfer and Training Program, being a Technical Fellow at Engility Corporation (later SAIC). He also acts the Chief Research Scientist at Next Frontier LLC, providing support to the US Air Force mainly in the fields of hypersonic flow, aero-optics and mesh generation.
He has a Doctorate degree in Engineering Science from Louisiana State University with minors in Astrophysics and Oceanography (2001) and a Diploma in Mechanical Engineering from the National Technical University of Athens, Greece (1992).