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Proceedings Paper

The role of integrated modeling in the design and verification of the James Webb Space Telescope
Author(s): Gary E. Mosier; Joseph M. Howard; John D. Johnston; Keith Alan Parrish; T. Tupper Hyde; Mark A. McGinnis; A. Marcel Bluth; Kevin Kim; Kong Q. Ha
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Paper Abstract

The James Web Space Telescope (JWST) is a large, infrared-optimized space telescope scheduled for launch in 2011. System-level verification of critical optical performance requirements will rely on integrated modeling to a considerable degree. In turn, requirements for accuracy of the models are significant. The size of the lightweight observatory structure, coupled with the need to test at cryogenic temperatures, effectively precludes validation of the models and verification of optical performance with a single test in 1-g. Rather, a complex series of steps are planned by which the components of the end-to-end models are validated at various levels of subassembly, and the ultimate verification of optical performance is by analysis using the assembled models. This paper describes the critical optical performance requirements driving the integrated modeling activity, shows how the error budget is used to allocate and track contributions to total performance, and presents examples of integrated modeling methods and results that support the preliminary observatory design. Finally, the concepts for model validation and the role of integrated modeling in the ultimate verification of observatory are described.

Paper Details

Date Published: 30 September 2004
PDF: 12 pages
Proc. SPIE 5528, Space Systems Engineering and Optical Alignment Mechanisms, (30 September 2004); doi: 10.1117/12.564452
Show Author Affiliations
Gary E. Mosier, NASA Goddard Space Flight Ctr. (United States)
Joseph M. Howard, NASA Goddard Space Flight Ctr. (United States)
John D. Johnston, NASA Goddard Space Flight Ctr. (United States)
Keith Alan Parrish, NASA Goddard Space Flight Ctr. (United States)
T. Tupper Hyde, NASA Goddard Space Flight Ctr. (United States)
Mark A. McGinnis, Swales Aerospace (United States)
A. Marcel Bluth, Swales Aerospace (United States)
Kevin Kim, Swales Aerospace (United States)
Kong Q. Ha, Jackson and Tull, Chartered Engineering (United States)


Published in SPIE Proceedings Vol. 5528:
Space Systems Engineering and Optical Alignment Mechanisms
Lee D. Peterson; Robert C. Guyer, Editor(s)

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