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Seal Technology In Gas Turbine Engines
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Author :ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) Publisher : ISBN 13 : Total Pages :278 pages Book Rating :4.:/5 (227 download)
Book Synopsis Seal Technology in Gas Turbine Engines by : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France)
Download or read book Seal Technology in Gas Turbine Engines written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) and published by . This book was released on 1978 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers were grouped into six sessions: Survey, Material Technology, User's View of Seal Technology, Measurements of Seal Behaviour, Laboratory Experiments, and Design Aids. The meeting was concluded with a Round Table Discussion. This discussion as well as those after each presentation, and the Technical Evaluation Report are included in the Conference Proceedings. The purpose of the meeting was to provide a forum to discuss technology of gas turbine engine seals. The discussion was limited to cases where relative motion exists between parts of seals. Both gas path and oil path seals were covered. Due to relevant and timely contributions an overview on the present status and the shortcomings of seal technology is reached as well as on the current developments. Various aspects were taken into account like engine operating and maintenance costs, and the engine design procedure. Within the Round Table Discussion and even more extensively in the Technical Evaluation Report conclusions are drawn and recommendations are given whereto future interest should be directed.
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (15 download)
Book Synopsis Seal technology in gas turbine engines by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Download or read book Seal technology in gas turbine engines written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Seal Technology Role in Meeting Next Generation Turbine Engine Goals by :
Download or read book Advanced Seal Technology Role in Meeting Next Generation Turbine Engine Goals written by and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Evaluation Report on the 51st (B) Specialists' Meeting of the Propulsion and Energetics Panel on Seal Technology in Gas Turbine Engines by : B. Wrigley
Download or read book Technical Evaluation Report on the 51st (B) Specialists' Meeting of the Propulsion and Energetics Panel on Seal Technology in Gas Turbine Engines written by B. Wrigley and published by . This book was released on 1978 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seal technology in gas turbines engines by :
Download or read book Seal technology in gas turbines engines written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721651849 Total Pages :32 pages Book Rating :4.6/5 (518 download)
Book Synopsis Leakage and Power Loss Test Results for Competing Turbine Engine Seals by : National Aeronautics and Space Administration (NASA)
Download or read book Leakage and Power Loss Test Results for Competing Turbine Engine Seals written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced brush and finger seal technologies offer reduced leakage rates over conventional labyrinth seals used in gas turbine engines. To address engine manufacturers concerns about the heat generation and power loss from these contacting seals, brush, finger, and labyrinth seals were tested in the NASA High Speed, High Temperature Turbine Seal Test Rig. Leakage and power loss test results are compared for these competing seals for operating conditions up to 922 K (1200 F) inlet air temperature, 517 KPa (75 psid) across the seal, and surface velocities up to 366 m/s (1200 ft/s). Proctor, Margaret P. and Delgado, Irebert R. Glenn Research Center NASA/TM-2004-213049, GT2004-53935, E-14452
Book Synopsis Bearing and Seal Technology Review by : Arthur F. Hiegel
Download or read book Bearing and Seal Technology Review written by Arthur F. Hiegel and published by . This book was released on 1971 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pratt and Whitney Aircraft large and small engine main shaft bearings and seals were reviewed (1) to identify large gas trubine engine bearing and seal concepts or characteristics which are applicable to small gas turbine engines of the 2-10 lb/sec airflow size, (2) to define large engine bearing and seal design standards for applicability to small gas turbine engines, (3) to determine suitable factors for scaling bearing and seal technology concepts from large gas turbine engines to small, 2-10 lb/sec airflow size turbine engines, (4) to recommend test programs to provide scaling data where scale factors are questionable, and (5) to determine what bearing and seal technology is lacking for advanced small engines. To accomplish this task, bearing and seal characteristics that might define standard design practices or scale factors were selected. After collection and compilation of pertinent data, comparisons were made to establish relationships between engine size and selected bearing and seal characteristics. In addition, comparisons of selected characteristics of large, mostly twin-spool engines versus small engine bearing, seal, and rotor dynamic characteristics were made. (Author).
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher : ISBN 13 : Total Pages :0 pages Book Rating :4.:/5 (64 download)
Book Synopsis Seal Technology in Gas Turbine Engines by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Download or read book Seal Technology in Gas Turbine Engines written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher : ISBN 13 :9789283502180 Total Pages :267 pages Book Rating :4.5/5 (21 download)
Book Synopsis AGARD Conference Proceedings by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Download or read book AGARD Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1978 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Leakage and Power Loss Test Results for Competing Turbine Engine Seals by :
Download or read book Leakage and Power Loss Test Results for Competing Turbine Engine Seals written by and published by . This book was released on 2004 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced brush and finger seal technologies offer reduced leakage rates over conventional labyrinth seals used in gas turbine engines. To address engine manufacturers' concerns about the heat generation and power loss from these contacting seals, brush, finger, and labyrinth seals were tested in the NASA High Speed, High Temperature Turbine Seal Test Rig. Leakage and power loss test results are compared for these competing seals for operating conditions up to 922 K (1200 degrees F) inlet air temperature, 517 KPa (75 psid) across the seal, and surface velocities up to 366 m/s (1200 ft/s).
Book Synopsis Seal Technology in Gas Turbine Engines. Papers Presented at the Propulsion and Energetics Panel's 51st (B) Specialists' Meeting, London 1978 by : AGARD.
Download or read book Seal Technology in Gas Turbine Engines. Papers Presented at the Propulsion and Energetics Panel's 51st (B) Specialists' Meeting, London 1978 written by AGARD. and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Evaluation Report on the (B) Specialists' Meeting (51st) of the Propulsion and Energetics Panel on Seal Technology in Gas Turbine Engines by : B. Wrigley
Download or read book Technical Evaluation Report on the (B) Specialists' Meeting (51st) of the Propulsion and Energetics Panel on Seal Technology in Gas Turbine Engines written by B. Wrigley and published by . This book was released on 1978 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report surveys critically the 17 papers presented at the meeting and the final Round Table Discussion. An overview on the present status of the employed technology and its shortcomings is reached as well as an overview on the current developments in the field. It is placed within the context of engine operating and maintenance costs and engine design including its relation to the mechanical and aerodynamic performance of engines.
Book Synopsis Bearing and Seal Scalability Study by : Louis I. Zirin
Download or read book Bearing and Seal Scalability Study written by Louis I. Zirin and published by . This book was released on 1971 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this analytical study, large aircraft gas turbine engine advanced bearing and seal technology was reviewed to determine those concepts which may be applicable to small, advanced, front drive turboshaft engines in the 2- to 10-lb/sec airflow size. Based on this review and a study of simple mechanical arrangements which appear to be feasible, problems associated with the design of the bearings and seals in these small, advanced turboshaft engines are discussed. Finally, design approaches and test programs required to provide solutions to these problems are recommended. (Author).
Book Synopsis Sealing Effectiveness of a Turbine Rim Seal at Engine-Relevant Conditions by : Kenneth Clark
Download or read book Sealing Effectiveness of a Turbine Rim Seal at Engine-Relevant Conditions written by Kenneth Clark and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas turbines are characterized by high efficiencies compared to other power generation systems, but even small efficiency gains can result in huge reductions in fuel costs and emissions. Overall pressure ratios for gas turbines continue to rise to achieve higher efficiencies, resulting in increasingly extreme thermal conditions in the hot section of the engine. Secondary air, bled from the compressor, is used to cool turbine components and seal the inter-stage cavities from the hot main gas path to maintain component durability. Unsealed cavities lead to hot gas ingestion, which can degrade critical components or, in extreme cases, can be catastrophic to engines. Providing adequate sealing flow is required to maintain component life, but efficient use of the secondary air is required to maintain the thermodynamic efficiency of the engine. To fully optimize these competing requirements, experiments at engine-relevant conditions are required to validate new designs and computational tools. This dissertation presents sealing effectiveness measurements for an engine-realistic turbine rim seal operated at engine-relevant conditions.A new facility providing continuous flow for a 1.5 stage turbine was designed, constructed, and commissioned to study hot gas ingestion for at engine-relevant conditions. Sealing effectiveness was determined through concentration measurements, whereby CO2 was used as a tracer gas in the secondary air supply, and sampled throughout the turbine rim seal and rim cavity. The turbine design was representative of a modern turbine with engine-realistic purge flow delivery and leakage flows, resulting in complex flow fields in the cavities. The measurements indicated that sealing effectiveness depended on the number of purge holes at and inboard of the purge injection location, with more purge holes exhibiting higher effectiveness than fewer purge holes. Outboard of the purge location, the sealing effectiveness was not affected by the number of purge holes. The boundary layer on the rotating disk entrained the purge flow, and the rotor and stator pumping distributed the purge flow throughout the cavity reducing the amount of ingestion. The results indicated that the well-accepted orifice models used to predict sealing effectiveness throughout the industry are successful for some cases; however, the results in this dissertation showed that those models are unsuccessful in predicting sealing effectiveness for the complex engine-realistic geometries and purge flow delivery methods. These findings highlight the need to obtain sealing effectiveness data at engine-relevant conditions, using engine-realistic hardware to develop ingestion models applicable to gas turbine engines.
Book Synopsis Gas Turbine Engine Static Strip Seals by : Arash Farahani
Download or read book Gas Turbine Engine Static Strip Seals written by Arash Farahani and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Seal Technology by : Frederic H. Mahler
Download or read book Advanced Seal Technology written by Frederic H. Mahler and published by . This book was released on 1972 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The limitations of present aircraft gas turbine engine dynamic seal technology were reviewed and the effect of gas path seal losses on four representative current and advanced transport and fighter aircraft engine cycles was established. Four key seal locations were identified: high-pressure compressor blade tip seal; cantilevered compressor stator tip seal; high-pressure turbine blade tip seal; and turbine interstage seal. An evaluation of a variety of seal concepts and preliminary designs yielded four candidate seal concepts for operation in environments up to 1500F compressor discharge temperature, 3200F turbine inlet temperature, 600 psi maximum pressure and rotor speeds consistent with advanced engine cycles. Final design layouts were prepared for the two most promising of these seals: a free-floating composite/abradable compressor blade tip seal and a high-pressure turbine blade tip seal using integrally cost extensions of the second-stage vane platform as first-and second-stage blade tip rubstrips. Finally, recommendations for experimental evaluation of the two final seal designs were developed. (Author).
Book Synopsis Aircraft Gas Turbine Engine Technology by : Irwin E. Treager
Download or read book Aircraft Gas Turbine Engine Technology written by Irwin E. Treager and published by Gregg Division McGraw-Hill. This book was released on 1979 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
