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Conceptual design and analysis of a dynamic scale model of the Space Station FreedomThis report documents the conceptual design study performed to evaluate design options for a subscale dynamic test model which could be used to investigate the expected on-orbit structural dynamic characteristics of the Space Station Freedom early build configurations. The baseline option was a 'near-replica' model of the SSF SC-7 pre-integrated truss configuration. The approach used to develop conceptual design options involved three sets of studies: evaluation of the full-scale design and analysis databases, conducting scale factor trade studies, and performing design sensitivity studies. The scale factor trade study was conducted to develop a fundamental understanding of the key scaling parameters that drive design, performance and cost of a SSF dynamic scale model. Four scale model options were estimated: 1/4, 1/5, 1/7, and 1/10 scale. Prototype hardware was fabricated to assess producibility issues. Based on the results of the study, a 1/4-scale size is recommended based on the increased model fidelity associated with a larger scale factor. A design sensitivity study was performed to identify critical hardware component properties that drive dynamic performance. A total of 118 component properties were identified which require high-fidelity replication. Lower fidelity dynamic similarity scaling can be used for non-critical components.
Document ID
19940029730
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Davis, D. A. (Lockheed Missiles and Space Co. Sunnyvale, CA, United States)
Gronet, M. J. (Lockheed Missiles and Space Co. Sunnyvale, CA, United States)
Tan, M. K. (Lockheed Missiles and Space Co. Sunnyvale, CA, United States)
Thorne, J. (Lockheed Missiles and Space Co. Sunnyvale, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1994
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-4598
NAS 1.26:4598
LMSC/F440397
Accession Number
94N34236
Funding Number(s)
PROJECT: RTOP 585-03-11-09
CONTRACT_GRANT: NAS1-19241
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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