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Proceedings Paper

JWST primary mirror technology development lessons learned
Author(s): H. Philip Stahl
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Paper Abstract

Mirror technology is a critical enabling capability for the James Webb Space Telescope (JWST). JWST requires a Primary Mirror Segment Assembly (PMSA) that can survive launch, deploy and align itself to form a 6.5 meter diameter (25 square meter collecting area) primary mirror with a 131 nm rms wavefront error at temperatures < 50K and provide stable optical performance. At the inception of JWST in 1996, such a capability did not exist. A highly successful technology development program was initiated which achieved TRL-6 in 2007. This paper reviews the technology development program, the methodology for assessing that TRL-6 was achieved, and the importance of an Engineering Development Unit (EDU). Additionally, this paper captures the author's lessons learned.

Paper Details

Date Published: 23 August 2010
PDF: 8 pages
Proc. SPIE 7796, An Optical Believe It or Not: Key Lessons Learned II, 779604 (23 August 2010); doi: 10.1117/12.860264
Show Author Affiliations
H. Philip Stahl, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 7796:
An Optical Believe It or Not: Key Lessons Learned II
Mark A. Kahan, Editor(s)

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