[PDF] Design Review Of Fluid Film Bearing Testers eBook

Author : National Aeronautics and Space Adm Nasa
Publisher :
Page : 78 pages
File Size : 35,74 MB
Release : 2018-11-06
Category :
ISBN : 9781730868993

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The designs of three existing testers (Hybrid Bearing Tester, OTV Bearing Tester, and Long Life Bearing Tester) owned by NASA were reviewed for their capability to serve as a multi-purpose cryogenic fluid film bearing tester. The primary tester function is the validation of analytical predictions for fluid film bearing steady state and dynamic performance. Evaluation criteria were established for test bearing configurations, test fluids, instrumentation, and test objectives. Each tester was evaluated with respect to these criteria. A determination was made of design improvements which would allow the testers to meet the stated criteria. The cost and time required to make the design changes were estimated. A recommendation based on the results of this study was made to proceed with the Hybrid Bearing Tester. Scharrer, Joseph K. Unspecified Center...

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 34 pages
File Size : 20,61 MB
Release : 2018-07
Category :
ISBN : 9781722153878

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A design review has been completed for a Pratt and Whitney (P&W)-designed fluid-film bearing and annular-seal test rig to be manufactured and installed at George C. Marshall Space Flight Center (MSFC). Issues covered in this study include: (1) the capacity requirements of the drive unit; (2) the capacity and configuration of the static loading system; (3) the capacity and configuration of the dynamic excitation system; (4) the capacity, configuration, and rotordynamic stability of a test bearing, support bearings, and shaft; and (5) the characteristics and configuration of the measurement transducers and data channels. Childs, Dara W. Unspecified Center NAG8-294...

Author :
Publisher : Professional Engineering Publishing
Page : 120 pages
File Size : 19,92 MB
Release : 2000
Category : Technology & Engineering
ISBN :

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This text reviews the latest core developments in fluid film bearing technology and practice, in relation to the selection of bearing materials, and enhancements in the design and manufacture of various types of bearings.

Author : Rajiv Tiwari
Publisher : CRC Press
Page : 1092 pages
File Size : 32,92 MB
Release : 2017-11-22
Category : Science
ISBN : 1351863649

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The purpose of this book is to give a basic understanding of rotor dynamics phenomena with the help of simple rotor models and subsequently, the modern analysis methods for real life rotor systems. This background will be helpful in the identification of rotor-bearing system parameters and its use in futuristic model-based condition monitoring and, fault diagnostics and prognostics. The book starts with introductory material for finite element methods and moves to linear and non-linear vibrations, continuous systems, vibration measurement techniques, signal processing and error analysis, general identification techniques in engineering systems, and MATLAB analysis of simple rotors. Key Features: • Covers both transfer matrix methods (TMM) and finite element methods (FEM) • Discusses transverse and torsional vibrations • Includes worked examples with simplicity of mathematical background and a modern numerical method approach • Explores the concepts of instability analysis and dynamic balancing • Provides a basic understanding of rotor dynamics phenomena with the help of simple rotor models including modern analysis methods for real life rotor systems.