Characteristics Of A Regenerative Cycle Turbofan Aircraft Engine

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Characteristics of a Regenerative Cycle Turbofan Aircraft Engine

Author : Vincent A. Padovano
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)

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Book Synopsis Characteristics of a Regenerative Cycle Turbofan Aircraft Engine by : Vincent A. Padovano

Download or read book Characteristics of a Regenerative Cycle Turbofan Aircraft Engine written by Vincent A. Padovano and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermarriage of the turbofan engine concept with a regenerative thermodynamic cycle is suggested as a means of improving the thrust specific fuel consumption. The primary objective of this study is to determine generalized performance characteristics of the regenerative cycle turbofan engine by (a) the derivation of the applicable thermodynamic cycle analysis, and (b) the generation of parametric design point performance. Secondary objectives include the optimization of cycle relationships to maximize performance and the quantitative evaluation of the regenerative turbofan from an aircraft mission standpoint. A thermodynamic cycle analysis has been derived for a front-fan, non-mixed exhaust turbofan engine which allows the determination of general engine performance as a function of component performance, flight conditions, and cycle design variables with and without primary stream regeneration. Parametric design point calculations have yielded both the performance characteristics of the simple and regenerative cycle turbofan engines and the comparison between them. The use of regeneration is found to offer significant improvement in turbofan TSFC at the expense of engine weight and size. Analytical means are provided for direct evaluation of the optimum cycle temperature which yields minimum TSFC. Substantial improvement in the range of a subsonic transport aircraft can be realized even up to the point where the regenerative turbofan weighs twice as much as its simple cycle counterpart. Primary stream regeneration can allow a given level of specific fuel consumption improvement to be obtained subsonically at bypass ratios lower than those that would be required by a simple cycle turbofan. Low bypass ratio would be desirable for high subsonic and supersonic operation. Hence, it is concluded that a more flexible performance improvement of the present simple cycle turbofan could well lie in a combination of increased bypass ratio and the selective use of primary stream regeneration.

Commercial Aircraft Propulsion and Energy Systems Research

Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309440998
Total Pages : 123 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Commercial Aircraft Propulsion and Energy Systems Research by : National Academies of Sciences, Engineering, and Medicine

Download or read book Commercial Aircraft Propulsion and Energy Systems Research written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-08-09 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary human activities that release carbon dioxide (CO2) into the atmosphere are the combustion of fossil fuels (coal, natural gas, and oil) to generate electricity, the provision of energy for transportation, and as a consequence of some industrial processes. Although aviation CO2 emissions only make up approximately 2.0 to 2.5 percent of total global annual CO2 emissions, research to reduce CO2 emissions is urgent because (1) such reductions may be legislated even as commercial air travel grows, (2) because it takes new technology a long time to propagate into and through the aviation fleet, and (3) because of the ongoing impact of global CO2 emissions. Commercial Aircraft Propulsion and Energy Systems Research develops a national research agenda for reducing CO2 emissions from commercial aviation. This report focuses on propulsion and energy technologies for reducing carbon emissions from large, commercial aircraftâ€" single-aisle and twin-aisle aircraft that carry 100 or more passengersâ€"because such aircraft account for more than 90 percent of global emissions from commercial aircraft. Moreover, while smaller aircraft also emit CO2, they make only a minor contribution to global emissions, and many technologies that reduce CO2 emissions for large aircraft also apply to smaller aircraft. As commercial aviation continues to grow in terms of revenue-passenger miles and cargo ton miles, CO2 emissions are expected to increase. To reduce the contribution of aviation to climate change, it is essential to improve the effectiveness of ongoing efforts to reduce emissions and initiate research into new approaches.

Life-cycle Analysis of Aircraft Turbine Engines

Author : J. R. Nelson
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Life-cycle Analysis of Aircraft Turbine Engines by : J. R. Nelson

Download or read book Life-cycle Analysis of Aircraft Turbine Engines written by J. R. Nelson and published by . This book was released on 1977 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Performance Characteristics of the Duct Burning Turbofan Engine

Author : Ali Montakhab
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Performance Characteristics of the Duct Burning Turbofan Engine by : Ali Montakhab

Download or read book Performance Characteristics of the Duct Burning Turbofan Engine written by Ali Montakhab and published by . This book was released on 1970 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (3 download)

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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 1991 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

"Advanced Energy Systems--their Role in Our Future"

Author :
Publisher :
ISBN 13 :
Total Pages : 854 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis "Advanced Energy Systems--their Role in Our Future" by :

Download or read book "Advanced Energy Systems--their Role in Our Future" written by and published by . This book was released on 1984 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Naval Aviation News

Author :
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Naval Aviation News by :

Download or read book Naval Aviation News written by and published by . This book was released on 1950 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy: a Continuing Bibliography with Indexes

Author :
Publisher :
ISBN 13 :
Total Pages : 838 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Energy: a Continuing Bibliography with Indexes by :

Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1978 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Design of High-Efficiency Turbomachinery and Gas Turbines, second edition, with a new preface

Author : David Gordon Wilson
Publisher : MIT Press
ISBN 13 : 0262325810
Total Pages : 625 pages
Book Rating : 4.2/5 (623 download)

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Book Synopsis The Design of High-Efficiency Turbomachinery and Gas Turbines, second edition, with a new preface by : David Gordon Wilson

Download or read book The Design of High-Efficiency Turbomachinery and Gas Turbines, second edition, with a new preface written by David Gordon Wilson and published by MIT Press. This book was released on 2014-09-05 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of a comprehensive textbook that introduces turbomachinery and gas turbines through design methods and examples. This comprehensive textbook is unique in its design-focused approach to turbomachinery and gas turbines. It offers students and practicing engineers methods for configuring these machines to perform with the highest possible efficiency. Examples and problems are based on the actual design of turbomachinery and turbines. After an introductory chapter that outlines the goals of the book and provides definitions of terms and parts, the book offers a brief review of the basic principles of thermodynamics and efficiency definitions. The rest of the book is devoted to the analysis and design of real turbomachinery configurations and gas turbines, based on a consistent application of thermodynamic theory and a more empirical treatment of fluid dynamics that relies on the extensive use of design charts. Topics include turbine power cycles, diffusion and diffusers, the analysis and design of three-dimensional free-stream flow, and combustion systems and combustion calculations. The second edition updates every chapter, adding material on subjects that include flow correlations, energy transfer in turbomachines, and three-dimensional design. A solutions manual is available for instructors. This new MIT Press edition makes a popular text available again, with corrections and some updates, to a wide audience of students, professors, and professionals.

Method for Determining Optimum Division of Power Between Jet and Propeller for Maximum Thrust Power of a Turbine-propeller Engine

Author : Arthur M. Trout
Publisher :
ISBN 13 :
Total Pages : 608 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Method for Determining Optimum Division of Power Between Jet and Propeller for Maximum Thrust Power of a Turbine-propeller Engine by : Arthur M. Trout

Download or read book Method for Determining Optimum Division of Power Between Jet and Propeller for Maximum Thrust Power of a Turbine-propeller Engine written by Arthur M. Trout and published by . This book was released on 1950 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charts are presented by means of which the jet pressure ratio that give optimum division of power between propeller and jet for maximum total thrust power may be determined for any turbine-propeller engine with or without intercooling, reheat, regeneration, or any combination of these modifications.

Lubrication Fundamentals, Revised and Expanded

Author : Don M. Pirro
Publisher : CRC Press
ISBN 13 : 1315362058
Total Pages : 578 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Lubrication Fundamentals, Revised and Expanded by : Don M. Pirro

Download or read book Lubrication Fundamentals, Revised and Expanded written by Don M. Pirro and published by CRC Press. This book was released on 2017-07-31 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Careful selection of the right lubricant(s) is required to keep a machine running smoothly. Lubrication Fundamentals, Third Edition, Revised and Expanded describes the need and design for the many specialized oils and greases used to lubricate machine elements and builds on the tribology and lubrication basics discussed in previous editions. Utilizing knowledge from leading experts in the field, the third edition covers new lubrication requirements, crude oil composition and selection, base stock manufacture, lubricant formulation and evaluation, machinery and lubrication fundamentals, and environmental stewardship. The book combines lubrication theory with practical knowledge, and provides many useful illustrations to highlight key industrial, commercial, marine, aviation, and automotive lubricant applications and concepts. All previous edition chapters have been updated to include new technologies, applications, and specifications that have been introduced in the past 15 years. What’s New in the Third Edition: Adds three new chapters on the growing renewable energy application of wind turbines, the impact of lubricants on energy efficiency, and best practice guidelines on establishing an in-service lubricant analysis program Updates API, SAE, and ACEA engine oil specifications, descriptions of new engine oil tests, impact of engine and fuel technology trends on engine oil Includes the latest environmental lubricant tests, definitions, and labelling programs Compiles expert information from ExxonMobil publications and the foremost international equipment builders and industry associations Covers key influences impacting lubricant formulations and technology Offers data on global energy demand and interesting statistics such as the worldwide population of nuclear reactors, wind turbines, and output of hydraulic turbines Presents new sections on the history of synthetic lubricants and hazardous chemical labeling for lubricants Whether used as a training guide for industry novices, a textbook for students to understand lubrication principles, or a technical reference for experienced lubrication and tribology professionals, Lubrication Fundamentals, Third Edition, Revised and Expanded is a "must read" for maintenance professionals, lubricant formulators and marketers, chemists, and lubrication, surface, chemical, mechanical, and automotive engineers.

Naval Engineers Journal

Author :
Publisher :
ISBN 13 :
Total Pages : 874 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Naval Engineers Journal by :

Download or read book Naval Engineers Journal written by and published by . This book was released on 1984 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy Research Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 850 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy

Author :
Publisher :
ISBN 13 :
Total Pages : 990 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Energy by :

Download or read book Energy written by and published by . This book was released on 1977 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Green Aviation

Author : Ramesh Agarwal
Publisher : John Wiley & Sons
ISBN 13 : 1118866355
Total Pages : 528 pages
Book Rating : 4.1/5 (188 download)

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Book Synopsis Green Aviation by : Ramesh Agarwal

Download or read book Green Aviation written by Ramesh Agarwal and published by John Wiley & Sons. This book was released on 2016-10-17 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green Aviation is the first authoritative overview of both engineering and operational measures to mitigate the environmental impact of aviation. It addresses the current status of measures to reduce the environmental impact of air travel. The chapters cover such items as: Engineering and technology-related subjects (aerodynamics, engines, fuels, structures, etc.), Operations (air traffic management and infrastructure) Policy and regulatory aspects regarding atmospheric and noise pollution. With contributions from leading experts, this volume is intended to be a valuable addition, and useful resource, for aerospace manufacturers and suppliers, governmental and industrial aerospace research establishments, airline and aviation industries, university engineering and science departments, and industry analysts, consultants, and researchers.

Aircraft Engines and Gas Turbines, second edition

Author : Jack L. Kerrebrock
Publisher : MIT Press
ISBN 13 : 0262534037
Total Pages : 497 pages
Book Rating : 4.2/5 (625 download)

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Book Synopsis Aircraft Engines and Gas Turbines, second edition by : Jack L. Kerrebrock

Download or read book Aircraft Engines and Gas Turbines, second edition written by Jack L. Kerrebrock and published by MIT Press. This book was released on 1992-04-22 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft Engines and Gas Turbines is widely used as a text in the United States and abroad, and has also become a standard reference for professionals in the aircraft engine industry. Unique in treating the engine as a complete system at increasing levels of sophistication, it covers all types of modern aircraft engines, including turbojets, turbofans, and turboprops, and also discusses hypersonic propulsion systems of the future. Performance is described in terms of the fluid dynamic and thermodynamic limits on the behavior of the principal components: inlets, compressors, combustors, turbines, and nozzles. Environmental factors such as atmospheric pollution and noise are treated along with performance. This new edition has been substantially revised to include more complete and up-to-date coverage of compressors, turbines, and combustion systems, and to introduce current research directions. The discussion of high-bypass turbofans has been expanded in keeping with their great commercial importance. Propulsion for civil supersonic transports is taken up in the current context. The chapter on hypersonic air breathing engines has been expanded to reflect interest in the use of scramjets to power the National Aerospace Plane. The discussion of exhaust emissions and noise and associated regulatory structures have been updated and there are many corrections and clarifications.

A Parametric Cycle Analysis of a Separate-Flow Turbofan with Interstage Turbine Burner

Author : C. J. Marek
Publisher : BiblioGov
ISBN 13 : 9781289157432
Total Pages : 22 pages
Book Rating : 4.1/5 (574 download)

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Book Synopsis A Parametric Cycle Analysis of a Separate-Flow Turbofan with Interstage Turbine Burner by : C. J. Marek

Download or read book A Parametric Cycle Analysis of a Separate-Flow Turbofan with Interstage Turbine Burner written by C. J. Marek and published by BiblioGov. This book was released on 2013-07 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today's modern aircraft is based on air-breathing jet propulsion systems, which use moving fluids as substances to transform energy carried by the fluids into power. Throughout aero-vehicle evolution, improvements have been made to the engine efficiency and pollutants reduction. This study focuses on a parametric cycle analysis of a dual-spool, separate-flow turbofan engine with an Interstage Turbine Burner (ITB). The ITB considered in this paper is a relatively new concept in modern jet engine propulsion. The JTB serves as a secondary combustor and is located between the high- and the low-pressure turbine, i.e., the transition duct. The objective of this study is to use design parameters, such as flight Mach number, compressor pressure ratio, fan pressure ratio, fan bypass ratio, linear relation between high- and low-pressure turbines, and high-pressure turbine inlet temperature to obtain engine performance parameters, such as specific thrust and thrust specific fuel consumption. Results of this study can provide guidance in identifying the performance characteristics of various engine components, which can then be used to develop, analyze, integrate, and optimize the system performance of turbofan engines with an ITB.