NDLI: Design concept for the international x-ray observatory Flight Mirror Assembly

Content Provider	IEEE Xplore Digital Library
Author	McClelland, R.S. Robinson, D.W.
Copyright Year	2009
Description	Author affiliation: NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA (McClelland, R.S.; Robinson, D.W.)
Abstract	The Flight Mirror Assembly (FMA) mechanical design for NASA's next major x-ray telescope mission, the International X-Ray Observatory (IXO), recently kicked off at NASA. The design presents some unique engineering challenges requiring a novel mirror design due to the high angular resolution and large effective area required to achieve the desired scientific objectives [1]. The Wolter-I x-ray telescope optical design requires about 14,000 0.4mm thick glass mirror segments to be densely packed into a 3.2m diameter FMA and supported with micron level accuracy and stability. Key challenges addressed by the FMA design concept include bonding the mirrors into the module without distortion, designing the segment support for glass survivability, keeping the structure light enough to launch, providing a large effective area, and preventing unacceptable thermal distortion. The thin mirror segments are mounted into intermediate wedge shaped structures called modules. Modules are kinematically mounted to the FMA primary structure which is being optimized for minimum mass and maximum projected area in the focal plane. The current design approach appears feasible without new technology development beyond that currently in process.
Starting Page	1
Ending Page	8
File Size	4694567
Page Count	8
File Format	PDF
ISBN	9781424426218
ISSN	1095323X
DOI	10.1109/AERO.2009.4839431
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Observatories Mirrors Assembly Optical design Telescopes Glass NASA Aerospace engineering Design engineering Stability
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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