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Umbilical Stiffness Matrix Characterization and Testing for Microgravity Science PayloadsThis paper describes efforts of testing and analysis of various candidate cables and umbilicals for International Space Station microgravity science payloads. The effects of looping, large vs. small displacements, and umbilical mounting configurations were assessed. A 3-DOF stepper motor driven fixture was used to excite the umbilicals. Forces and moments were directly measured in all three axes with a 6-DOF load cell in order to derive suitable stiffness matrices for design and analysis of vibration isolation controllers. Data obtained from these tests were used to help determine the optimum type and configuration of umbilical cables for the International Space Station microgravity science glovebox (MSG) vibration isolation platform. The data and procedures can also be implemented into control algorithm simulations to assist in validation of actively controlled vibration isolation systems. The experimental results of this work are specific in support of the Glovebox Integrated Microgravity Isolation Technology (g-LIMIT) isolation platform, to be located in the microgravity science glovebox aboard the U.S. Destiny Laboratory Module.
Document ID
20030106651
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Engberg, Robert C.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Structural Mechanics
Report/Patent Number
AIAA Paper 2003-1873
Meeting Information
Meeting: AIAA Structures, Structural Dynamics and Materials Conference
Location: Norfolk, VA
Country: United States
Start Date: April 7, 2003
End Date: April 10, 2003
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
OTHER: 400-36-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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