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Analytical Verifications in Cryogenic Testing of NGST Advanced Mirror System DemonstratorsGround based testing is a critical and costly part of component, assembly, and system verifications of large space telescopes. At such tests, however, with integral teamwork by planners, analysts, and test personnel, segments can be included to validate specific analytical parameters and algorithms at relatively low additional cost. This paper opens with strategy of analytical verification segments added to vacuum cryogenic testing of Advanced Mirror System Demonstrator (AMSD) assemblies. These AMSD assemblies incorporate material and architecture concepts being considered in the Next Generation Space Telescope (NGST) design. The test segments for workmanship testing, cold survivability, and cold operation optical throughput are supplemented by segments for analytical verifications of specific structural, thermal, and optical parameters. Utilizing integrated modeling and separate materials testing, the paper continues with support plan for analyses, data, and observation requirements during the AMSD testing, currently slated for late calendar year 2002 to mid calendar year 2003. The paper includes anomaly resolution as gleaned by authors from similar analytical verification support of a previous large space telescope, then closes with draft of plans for parameter extrapolations, to form a well-verified portion of the integrated modeling being done for NGST performance predictions.
Document ID
20030000978
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Cummings, Ramona
(NASA Marshall Space Flight Center Huntsville, AL United States)
Levine, Marie
(NASA Marshall Space Flight Center Huntsville, AL United States)
VanBuren, Dave
(NASA Marshall Space Flight Center Huntsville, AL United States)
Kegley, Jeff
(NASA Marshall Space Flight Center Huntsville, AL United States)
Green, Joseph
(NASA Marshall Space Flight Center Huntsville, AL United States)
Hadaway, James
(NASA Marshall Space Flight Center Huntsville, AL United States)
Presson, Joan
(NASA Marshall Space Flight Center Huntsville, AL United States)
Cline, Todd
(NASA Marshall Space Flight Center Huntsville, AL United States)
Stahl, H. Philip
Date Acquired
August 21, 2013
Publication Date
January 1, 2002
Subject Category
Astronomy
Meeting Information
Meeting: SPIE Astronomical Telescopes and Instrumentation
Location: Waikola, HI
Country: United States
Start Date: August 22, 2002
End Date: August 28, 2002
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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