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Evaluation Of Axial Lock Up Of Space Shuttle Main Engine Bearings From High Pressure Oxygen Turbopump
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781724307538 Total Pages :32 pages Book Rating :4.3/5 (75 download)
Book Synopsis Evaluation of Axial Lock-Up of Space Shuttle Main Engine Bearings from High Pressure Oxygen Turbopump by : National Aeronautics and Space Administration (NASA)
Download or read book Evaluation of Axial Lock-Up of Space Shuttle Main Engine Bearings from High Pressure Oxygen Turbopump written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-26 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mainshaft support bearings of long life turbopumps for use on the space shuttle were evaluated to determine possible causes of failure. Specific aspects examined include the sensitivity of 15 degree versus 25 degree contact angle bearings with regard to heat damage and thermal runaway, the L/D aspects of the turbine end bearing pair with regard to hang-up due to cocking, the hang-up required to support a 44.5 KN axial load without cartridge slipping, the outer race growth as a result of a 44.5 KN axial load, and bearing torque as a function of axial load. Results indicate that hang-up of the cartridge due to bearing heating is a serious problem especially if poor lubrication of the bearing occurs and that race growth due to axial load can contribute to cartridge lock-up. The experimental evaluation of bearing performance under axial loads indicates that the bearing torque is a strong function of surface lubrication. Kannel, J. W. and Dufrane, K. F. Unspecified Center NASA-CR-161613 NAS8-33576
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725548176 Total Pages :32 pages Book Rating :4.5/5 (481 download)
Book Synopsis Evaluation of Space Shuttle Main Engine Bearings from High Pressure Oxygen Turbopump 9008 by : National Aeronautics and Space Administration (NASA)
Download or read book Evaluation of Space Shuttle Main Engine Bearings from High Pressure Oxygen Turbopump 9008 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-14 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two used turbopump mainshaft support bearings were examined to determine steps needed to achieve turbopump lifetimes of 27,000 seconds. The two bearings, which had been run in a high pressure oxygen turbopump, are angular contact ball bearings, applied as a preloaded pair, locked to the shaft, inner race rotating, with the outer races unrestrained axially. Examination showed that both bearings had been subjected to overloads, leading to fatigue spalling on the races and balls and advanced retainer wear. This is clear evidence of unintended high internal loads in the high pressure oxygen pump which would lead to complete bearing failure and extensive secondary pump damage. Action must be taken to reduce the applied bearing loads or to incorporate bearings of sufficient size to withstand the high loads. Dufrane, K. F. and Kannel, J. W. Unspecified Center NASA-CR-161516 NAS8-33576...
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1981 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1981 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report of the Presidential Commission on the Space Shuttle Challenger Accident by : DIANE Publishing Company
Download or read book Report of the Presidential Commission on the Space Shuttle Challenger Accident written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1995-07 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722755027 Total Pages :86 pages Book Rating :4.7/5 (55 download)
Book Synopsis Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 2 by : National Aeronautics and Space Administration (NASA)
Download or read book Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 2 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-pressure oxidizer turbopump (HPOTP) consists of two centrifugal pumps, on a common shaft, that are directly driven by a hot-gas turbine. Pump shaft axial thrust is balanced in that the double-entry main inducer/impeller is inherently balanced and the thrusts of the preburner pump and turbine are nearly equal but opposite. Residual shaft thrust is controlled by a self-compensating, non-rubbing, balance piston. Shaft hang-up must be avoided if the balance piston is to perform properly. One potential cause of shaft hang-up is contact between the Phase 2 bearing support and axial spring cartridge of the HPOTP main pump housing. The status of the bearing support/axial spring cartridge interface is investigated under current loading conditions. An ANSYS version 4.3, three-dimensional, finite element model was generated on Lockheed's VAX 11/785 computer. A nonlinear thermal analysis was then executed on the Marshall Space Flight Center Engineering Analysis Data System (EADS). These thermal results were then applied along with the interference fit and bolt preloads to the model as load conditions for a static analysis to determine the gap status of the bearing support/axial spring cartridge interface. For possible further analysis of the local regions of HPOTP main pump housing assembly, detailed ANSYS submodels were generated using I-DEAS Geomod and Supertab (Appendix A). Sisk, Gregory A. Unspecified Center...
Book Synopsis Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 2 by : National Aeronautics and Space Adm Nasa
Download or read book Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 2 written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-09 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-pressure oxidizer turbopump (HPOTP) consists of two centrifugal pumps, on a common shaft, that are directly driven by a hot-gas turbine. Pump shaft axial thrust is balanced in that the double-entry main inducer/impeller is inherently balanced and the thrusts of the preburner pump and turbine are nearly equal but opposite. Residual shaft thrust is controlled by a self-compensating, non-rubbing, balance piston. Shaft hang-up must be avoided if the balance piston is to perform properly. One potential cause of shaft hang-up is contact between the Phase 2 bearing support and axial spring cartridge of the HPOTP main pump housing. The status of the bearing support/axial spring cartridge interface is investigated under current loading conditions. An ANSYS version 4.3, three-dimensional, finite element model was generated on Lockheed's VAX 11/785 computer. A nonlinear thermal analysis was then executed on the Marshall Space Flight Center Engineering Analysis Data System (EADS). These thermal results were then applied along with the interference fit and bolt preloads to the model as load conditions for a static analysis to determine the gap status of the bearing support/axial spring cartridge interface. For possible further analysis of the local regions of HPOTP main pump housing assembly, detailed ANSYS submodels were generated using I-DEAS Geomod and Supertab (Appendix A). Sisk, Gregory A. Unspecified Center...
Book Synopsis Liquid Rocket Engine Axial-flow Turbopumps by :
Download or read book Liquid Rocket Engine Axial-flow Turbopumps written by and published by . This book was released on 1978 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbopumps for Liquid Rocket Engines by : Maynard L. Joe Stangeland
Download or read book Turbopumps for Liquid Rocket Engines written by Maynard L. Joe Stangeland and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Society Records by : American Society of Mechanical Engineers
Download or read book Society Records written by American Society of Mechanical Engineers and published by . This book was released on 1973 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developmental Problems and Their Solution for the Space Shuttle Main Engine Alternate Liquid Oxygen High-pressure Turbopump: Anomaly Or Failure Investigation the Key by : R. S. Ryan
Download or read book Developmental Problems and Their Solution for the Space Shuttle Main Engine Alternate Liquid Oxygen High-pressure Turbopump: Anomaly Or Failure Investigation the Key written by R. S. Ryan and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs by : National Research Council
Download or read book A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs written by National Research Council and published by National Academies Press. This book was released on 2007-01-14 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests. A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support. This report also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology development plans.
Book Synopsis Taming Liquid Hydrogen by : Virginia Parker Dawson
Download or read book Taming Liquid Hydrogen written by Virginia Parker Dawson and published by . This book was released on 2004 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Engineering for Design of Liquid-Propellant Rocket Engines by : Dieter K. Huzel
Download or read book Modern Engineering for Design of Liquid-Propellant Rocket Engines written by Dieter K. Huzel and published by AIAA. This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energiya-Buran written by Bart Hendrickx and published by Springer Science & Business Media. This book was released on 2007-12-05 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: This absorbing book describes the long development of the Soviet space shuttle system, its infrastructure and the space agency’s plans to follow up the first historic unmanned mission. The book includes comparisons with the American shuttle system and offers accounts of the Soviet test pilots chosen for training to fly the system, and the operational, political and engineering problems that finally sealed the fate of Buran and ultimately of NASA’s Shuttle fleet.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722788650 Total Pages :42 pages Book Rating :4.7/5 (886 download)
Book Synopsis Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 3b by : National Aeronautics and Space Administration (NASA)
Download or read book Space Shuttle Main Engine Structural Analysis and Data Reduction/Evaluation. Volume 3b written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-11 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis performed on the High Pressure Oxidizer Turbopump (HPOTP) preburner pump bearing assembly located on the Space Shuttle Main Engine (SSME) is summarized. An ANSYS finite element model for the inlet assembly was built and executed. Thermal and static analyses were performed. Power, Gloria B. and Violett, Rebeca S. Unspecified Center NAS8-37282...
