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Structural characterization of an articulated-truss jointA first generation space crane articulated-truss joint was statically and dynamically characterized in a configuration which approximated an operational environment. The articulated-truss joint was integrated into a test bed for structural characterization. Static characterization was performed by applying known loads and measuring the corresponding deflections to obtain load-deflection curves. Dynamic characterization was performed using modal testing to experimentally determine the first six mode shapes, frequencies, and modal damping values. The static and dynamic characteristics were also determined for a reference truss, which served as a characterization baseline. Load-deflection curves are presented for the reference truss, and the articulated-truss joint mounted in the test bed. The static and dynamic experimental results are compared to analytical predictions obtained from finite element analyses. The load-deflection response is also presented for one of the linear actuators used in the articulated-truss joint. Finally, an assessment is presented for the predictability of the truss hardware used in the reference truss and articulated-truss joint based upon hardware stiffness properties which were previously obtained during the Precision Segmented Reflector (PSR) Technology Development Program.
Document ID
19930058004
Document Type
Conference Paper
Authors
Sutter, Thomas R. (NASA Langley Research Center Hampton, VA, United States)
Wu, K. C. (NASA Langley Research Center Hampton, VA, United States)
Riutort, Kevin T. (NASA Langley Research Center Hampton, VA, United States)
Laufer, Joseph B. (NASA Langley Research Center Hampton, VA, United States)
Phelps, James E. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Engineering, construction, and operations in space - III: Space '92; Proceedings of the 3rd International Conference, Denver, CO, May 31-June 4, 1992. Vol. 1 (A93-41976 17-12)
Subject Category
GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE)
Distribution Limits
Public
Copyright
Other

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IDRelationTitle19930057979Analytic PrimaryEngineering, Construction, and Operations in Space III