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Linear and Nonlinear Aspects of RotordynamicsExcessive vibrations of the liquid oxygen pump in the Space Shuttle's Main Engine have been recorded during hot firing ground testing. In order to determine mathematical explanations of this possibility, destructive phenomenon differential equations have been examined which describe the rotordynamics of the pump. Modeling the rotor as a random eigenvalue problem was considered. Analytical expressions were derived for the solution in the case of symmetric damping and stiffness. This enables one to determine accuracy estimates when testing numerical techniques to solve both asymmetric and nonlinear problems. Finally, the rotor model has had nonlinear elements incorporated to improve its simulation of the pump and to expand the corresponding mathematical theory.
Document ID
19840007966
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Day, W. B.
(Auburn Univ. AL, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: Alabama Univ. Res. Rept.: 1983 NASA(ASEE Summer Faculty Fellowship Program
Subject Category
Mechanical Engineering
Accession Number
84N16034
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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