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SSME structural dynamic model development, phase 2A set of test correlated mathematical models of the SSME High Pressure Oxygen Turbopump (HPOTP) housing and rotor assembly was produced. New analysis methods within the EISI/EAL and SPAR systems were investigated and runstreams for future use were developed. The LOX pump models have undergone extensive modification since the first phase of this effort was completed. The rotor assembly from the original model was abandoned and a new, more detailed model constructed. A description of the new rotor math model is presented. Also, the pump housing model was continually modified as additional test data have become available. This model is documented along with measured test results. Many of the more advanced features of the EAL/SPAR finite element analysis system were exercised. These included the cyclic symmetry option, the macro-element procedures, and the fluid analysis capability. In addition, a new tool was developed that allows an automated analysis of a disjoint structure in terms of its component modes. A complete description of the implementation of the Craig-Bampton method is given along with two worked examples.
Document ID
19860011025
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Foley, M. J.
(Lockheed Missiles and Space Co. Huntsville, AL, United States)
Wilson, V. L.
(Lockheed Missiles and Space Co. Huntsville, AL, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1985
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
LMSC-HEC-TR-F042668
NAS 1.26:178708
NASA-CR-178708
Accession Number
86N20496
Funding Number(s)
CONTRACT_GRANT: NAS8-34973
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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