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Demonstration of an Inverted Stewart Platform Target-Suspension System Using Lightweight, High-Tensile Strings

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5 Author(s)
Buterbaugh, A. ; Force Res. Lab., Wright Patterson ; Kent, B.M. ; Mentzer, C. ; Scott, M.
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This paper presents the design, development, and testing of an inverted Stewart platform for suspending and positioning targets during RF antenna and signature testing. Previous string target-support systems have used multiple-string-attachment-point configurations that do not allow the target roll or pitch to be modified during the azimuthal data collection. This presentation will discuss an in-house development of a scale model target-support system that allows for high-accuracy simultaneous target roll and pitch positioning. The inverted Stewart platform also offers unique stability of the target by damping out the torsional pendulum motion typically encountered in conventional string-support systems. In this paper, we will also discuss the advantages and disadvantages of the string-support concepts, and provide design guidance for building an inverted Stewart-platform support system.

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Antennas and Propagation Magazine, IEEE  (Volume:49 ,  Issue: 5 )