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Support trusses for large precision segmented reflectors: Preliminary design and analysisPrecision Segmented Reflector (PSR) technology is currently being developed for a range of future applications such as the Large Deployable Reflector. The structures activities at NASA-Langley are outlined in support of the PSR program. Design concepts are explored for erectable and deployable support structures which are envisioned to be the backbone of these precision reflectors. Important functional requirements for the support trusses related to stiffness, mass, and surface accuracy are reviewed. Proposed geometries for these structures and factors motivating the erectable and deployable designs are discussed. Analytical results related to stiffness, dynamic behavior, and surface accuracy are presented and considered in light of the functional requirements. Results are included for both a 4-meter-diameter prototype support truss which is currently being designed as the Test Bed for the PSR technology development program, and for two 20-meter support structures.
Document ID
19900009137
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Collins, Timothy J. (NASA Langley Research Center Hampton, VA, United States)
Fichter, W. B. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1989
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NAS 1.15:101560
NASA-TM-101560
Accession Number
90N18453
Funding Number(s)
PROJECT: RTOP 585-02-31-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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