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Proceedings Paper

Dynamic/jitter assessment of multiple potential HabEx structural designs
Author(s): J. Brent Knight; H. Philip Stahl; Andy Singleton; Ron Hunt; Melissa Therrell; Kate Caldwell; Jay Garcia; Mike Baysinger
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Paper Abstract

One of the driving structural requirements of the Habitable Exo-Planet (HabEx) telescope is to maintain Line Of Sight (LOS) stability between the Primary Mirror (PM) and Secondary Mirror (SM) of ≤ 5 milli-arc seconds (mas). Dynamic analyses of two configurations of a proposed HabEx 4 meter off-axis telescope structure were performed to predict effects of a vibration input on primary/secondary mirror alignment. The dynamic disturbance used as the forcing function was the James Webb Space Telescope reaction wheel assembly vibration emission specification level. The objective of these analyses was to predict “order-of-magnitude” performance for various structural configurations which contribute to efforts in defining the HabEx structural design’s global architecture. Two variations of the basic architectural design were analyzed. Relative motion between the PM and the SM for each design configuration are reported.

Paper Details

Date Published: 6 September 2017
PDF: 10 pages
Proc. SPIE 10374, Optical Modeling and Performance Predictions IX, 1037402 (6 September 2017); doi: 10.1117/12.2274325
Show Author Affiliations
J. Brent Knight, NASA Marshall Space Flight Ctr. (United States)
H. Philip Stahl, NASA Marshall Space Flight Ctr. (United States)
Andy Singleton, NASA Marshall Space Flight Ctr. (United States)
Ron Hunt, NASA Marshall Space Flight Ctr. (United States)
Melissa Therrell, NASA Marshall Space Flight Ctr. (United States)
Kate Caldwell, NASA Marshall Space Flight Ctr. (United States)
Jay Garcia, NASA Marshall Space Flight Ctr. (United States)
Mike Baysinger, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 10374:
Optical Modeling and Performance Predictions IX
Mark A. Kahan; Marie B. Levine-West, Editor(s)

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