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STS-74/Mir Photogrammetric Appendage Structural Dynamics Experiment Preliminary Data AnalysisThe Photogrammetric Appendage Structural Dynamics Experiment was designed, developed, and flown to demonstrate and prove measurement of the structural vibration response of a Russian Space Station Mir solar array using photogrammetric methods. The experiment flew on the STS-74 Space Shuttle mission to Mir in November 1995 and obtained video imagery of solar array structural response to various excitation events. The video imagery has been digitized and triangulated to obtain response time history data at discrete points on the solar array. This data has been further processed using the Eigensystem Realization Algorithm modal identification technique to determine the natural vibration frequencies, damping, and mode shapes of the solar array. The results demonstrate that photogrammetric measurement of articulating, non-optically targeted, flexible solar arrays and appendages is a viable, low-cost measurement option for the International Space Station.
Document ID
19970015406
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Gilbert, Michael G. (NASA Langley Research Center Hampton, VA United States)
Welch, Sharon S. (NASA Langley Research Center Hampton, VA United States)
Pappa, Richard S. (NASA Langley Research Center Hampton, VA United States)
Demeo, Martha E. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1997
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TM-110324
NAS 1.15:110324
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials
Location: Kissimmee, FL
Country: United States
Start Date: April 7, 1997
End Date: April 10, 1997
Sponsors: American Helicopter Society, Inc., American Inst. of Aeronautics and Astronautics, American Society of Mechanical Engineers, Alpha STAR Corp., American Society of Civil Engineers
Accession Number
97N18302
Funding Number(s)
PROJECT: RTOP 237-08-02-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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