13 June 2006 The JWST backplane stability test article: a critical technology demonstration
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Abstract
The unprecedented stability requirements of JWST structures can only be conclusively verified by a combination of analysis and ground test. Given the order of magnitude of the expected motions of the backplane due to thermal distortion and the high level of confidence required on such a large and important project, the demonstration of the ability to verify the thermal distortion analysis to the levels required is a critical need for the program. The demonstration of these analysis tools, in process metrology and manufacturing processes increases the technology readiness level of the backplane to required levels. To develop this critical technology, the Backplane Stability Test Article (BSTA) was added to the JWST program. The BSTA is a representative substructure for the full flight backplane, manufactured using the same resources, materials and processes. The BSTA will be subject to environmental testing and its deformation and damping properties measured. The thermally induced deformation will be compared with predicted deformations to demonstrate the ability to predict thermal deformation to the levels required. This paper will review the key features and requirements of the BSTA and its analysis, the test, measurement and data collection plans.
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Jonathan Arenberg, Jonathan Arenberg, Larry Gilman, Larry Gilman, Nick Abbruzze, Nick Abbruzze, Justin Reuter, Justin Reuter, Kristen Anderson, Kristen Anderson, Jas Jahic, Jas Jahic, Joseph Yacoub, Joseph Yacoub, Hector Padilla, Hector Padilla, Charles Atkinson, Charles Atkinson, Dave Moon, Dave Moon, Kevin Patton, Kevin Patton, Patty May, Patty May, Jim York, Jim York, Ted Messer, Ted Messer, Stan Backovsky, Stan Backovsky, Jim Tucker, Jim Tucker, Chris Harvey, Chris Harvey, Bente Eegholm, Bente Eegholm, Barbara Zukowski, Barbara Zukowski, Peter Blake, Peter Blake, } "The JWST backplane stability test article: a critical technology demonstration", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62650Q (13 June 2006); doi: 10.1117/12.671714; https://doi.org/10.1117/12.671714
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