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A probabilistic approach to the dynamic analysis of ducts subjected to multibase harmonic and random excitationThe dynamic behavior of the discharge duct of the high-pressure oxidizer turbopump of a cryogenic rocket motor is investigated analytically. The probabilistic analysis program NESSUS (Numerical Evaluation of Stochastic Structures Under Stress; Cruse et al., 1988) is used to treat the uncertainties due to random and harmonic excitation (e.g., pump noise, pump-induced harmonics, and combustion noise), variations in engine inlet pressure, and changes in system damping. The load modeling procedure, the variation in power-spectral density in different zones of the engine structure, and the dynamic structural-analysis technique are described, and the numerical results of the NESSUS analysis are presented in extensive tables and graphs and discussed in detail.
Document ID
19900042275
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Debchaudhury, Amit
(Rockwell International Corp. Canoga Park, CA, United States)
Rajagopal, K. R.
(Rockwell International Corp. Canoga Park, CA, United States)
Ho, H.
(Rockwell International Corp. Canoga Park, CA, United States)
Newell, J. F.
(Rockwell International Corp. Rocketdyne Div., Canoga Park, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 90-1100
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Location: Long Beach, CA
Country: United States
Start Date: April 2, 1990
End Date: April 4, 1990
Accession Number
90A29330
Distribution Limits
Public
Copyright
Other

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