Application of multiple input random and polyreference analysis techniques to the Galileo spacecraft modal testAn experimental modal analysis of the Galileo spacecraft was required to verify a finite element model used in loads analysis. Multiple input random and polyreference analysis techniques were applied in this program to demonstrate their effectiveness in determining the modal characteristics of a complex space structure. The methods were successful in determining an accurate set of modal data from two days of data acquisition. A complete set of results was available within 24 hours of test completion. Final analysis shows the modes from the multiple input random tests to be more complete and orthogonal than those obtained from classical sine dwell methods.
Document ID
19840048958
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, J. C. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Hunt, D. L. (SDRC, Inc. San Diego, CA, United States)