Structural Dynamics of Liquid Rocket Engines

This is the first Structural Dynamics book focused on this indispensable aspect of liquid rocket engine design. This book begins by reviewing basic concepts in Structural Dynamics, including the free and forced response of SDOF and MDOF systems, along with some discussion of how numerical solutions are generated. The book then moves to a discussion of specific applications of these techniques in LREs, progressing from component level (turbomachinery and combustion devices), up through engine system models, and finally to integration with a launch vehicle. Clarifies specific topics including the Campbell and SAFE Diagrams for resonance identification in turbomachinery, the complications of component analysis in the pump side due to a host of complication factors such as acoustic/structure interaction, the "side-loads" fluid/structure interaction problem in overexpanded rocket nozzles, and competing methods for generation overall engine system interface loads. Includes specific examplesfor illustration while closing with rotordynamic analysis, dynamic data analysis, and vibroacoustics.

First third of the book focuses on the summary of basic concepts in vibrations and structural dynamics Presents a brief overview of turbopump operations necessary for SD Analysis Discusses specific components with unusual forcing function or structural dynamics characteristics

Auteur

Andy Brown, Ph.D. is an Aerospace Engineer in the Propulsion Structure & Dynamic Analysis Branch/ER41 at NASA Marshall Space flight Center. He joined MSFC in 1986 and has worked mainly on rocket engine dynamics and loads research and production analysis, but also has performed hypersonic debris impact analysis. Presently he is leading structural dynamic analysis for the adaptation and re-start of the Space Shuttle Main Engine into the new RS25 engine, which will power the first stage of the Space Launch System. He has authored or co-authored 11 journal papers and over 28 conference papers covering topics ranging from probabilistic design and load combination methods to techniques for calculating turbine blade forced response in the presence of asymmetric flow. Dr. Brown has been an active member of the AIAA Structural Dynamics Technical Committee and taught graduate-level courses in Structural Dynamics and Finite Element methods while a visiting professor at UNC Charlotte. He has taught a professional cshort course "Basics of Structural Dynamics" a number of times and has been an adjunct professor at Duke University with the Thrust international master's degree program in turbomachinery. Andy received a BS in Mechanical Engineering from Duke University, a Ph.D. in ME from Georgia Tech, and an Associate Fellow of the AIAA.

Contenu
Introduction & Motivation The Critical Role of Structural dynamics (SD) in the Design, Analysis, Testing, and Operation of Liquid Rocket Engines (LRE's).- Review of Structural Dynamics Theory Necessary for Analysis of LRE's.- Structural Dynamics of LRE Turbopumps.- Structural Dynamics of LRE Combustion Devices.- Rocket Engine System Loads.- System Hardware and Propellant Feedlines.- Structural Dynamics in Testing of Liquid Rocket Engines.- Related Disciplines and Advanced Topics.