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This book follows the successful first edition textbook with comprehensive treatment of the subjects in air breathing propulsion, from the basic principles to more advanced treatments in engine components and system integration. This new edition has been extensively updated to include a number of new and important topics. A chapter is now included on General Aviation and Uninhabited Aerial Vehicle (UAV) Propulsion Systems that includes a discussion on electric and hybrid propulsion. Propeller theory is added to the presentation of turboprop engines. A new section in cycle analysis treats Ultra-High Bypass (UHB) and Geared Turbofan engines. New material on drop-in biofuels and design for sustainability is added to reflect the FAA's 2025 Vision.In addition, the design guidelines in aircraft engine components are expanded to make the book user friendly for engine designers. Extensive review material and derivations are included to help the reader navigate through the subject with ease.

Description Leading researchers provide a cohesive treatment of the complex issues in high-speed propulsion, as well as introductions to the current capabilities for addressing several fundamental aspects of high-speed vehicle propulsion development. Includes more than 380 references, 290 figures and tables, and 185 equations.

Aerospace propulsion devices embody some of the most advanced technologies, ranging from materials, fluid control, and heat transfer and combustion. In order to maximize the performance, sophisticated testing and computer simulation tools are developed and used.

Aircraft Propulsion and Gas Turbine Engines, Second Edition builds upon the success of the book’s first edition, with the addition of three major topic areas: Piston Engines with integrated propeller coverage; Pump Technologies; and Rocket Propulsion. The rocket propulsion section extends the text’s coverage so that both Aerospace and Aeronautical topics can be studied and compared. Numerous updates have been made to reflect the latest advances in turbine engines, fuels, and combustion. The text is now divided into three parts, the first two devoted to air breathing engines, and the third covering non-air breathing or rocket engines. Preface. Part 1: Aero Engines and Gas Turbines. History and Classifications of Aero Engines. Performance Parameters of Jet Engines. Pulsejet and Ramjet Engines. Turbojet Engine. Turbofan Engines. Shaft Engines: Internal Combustion, Turboprop, Turboshaft, and Propfan Engines. High-Speed Supersonic and Hypersonic Engines. Industrial Gas Turbines. Part 2: Power Plant Installation and Intakes. Combustion Systems. Exhaust System. Centrifugal Compressors. Axial-Flow Compressors and Fans. Axial Turbines. Radial Inflow Turbines. Module Matching. Selected Topics. Part 3: Introduction to Rocketry. Rocket Engines. Appendices. Prof. Ahmed F. El-Sayed was a Senior Engineer for the Egyptian Airline EGYPTAIR for 10 years, working in maintenance, technical inspection, and R&D departments as well as the engine overhaul shop. He has worked as a researcher in corporate projects with Westinghouse (USA) and Rolls Royce (UK), and taught propulsion and turbomachinery courses in several universities in Egypt, the USA, and Libya. Prof. El-Sayed has lectured in the field of design and performance of aircraft engines in several universities in the USA, Russia, Belgium, UK, Austria, China, Syria, and Japan, including NASA Glenn, MIT, the US Air Force Academy and von Karman Institute. He is the author of eight books, and more than eighty technical papers handling aircraft propulsion, performance, design aspects and FOD of intakes, fans and compressors, cooling of axial turbines of aircraft engines. \"This book is one of the best on the market covering the topic of aircraft propulsion. There is no question that Aircraft Propulsion and Gas Turbines, 2nd Edition deserves your attention should you consider employment in gas turbines industry or are developing an academic course for your university. It is a resource that should be on everyone’s shelf.\" — Kenneth W. Van Treuren, Baylor University, Texas, USA \"This book is truly a broad scope text on aerospace propulsion covering the whole spectrum of technologies from gas turbine engines, to propellers and space propulsion technologies. The book at its heart is a comprehensive text on aircraft gas turbine engines, hence the title. However, the author has updated the first edition of this text to include more contemporary topics such as a discussion on biofuel economic viability and unmanned aerial vehicle (UAV) propulsion technologies as well as extending the scope to cover rocket and space propulsion technologies. Overall this is a good comprehensive textbook for Aerospace Propulsion and for instructors looking for a catch all text this is certainly an excellent option and it would serve well on any undergraduate aerospace engineering course as a good introduction to most aerospace propulsion technologies. The more comprehensive gas turbine sections would cover more senior undergraduate and taught postgraduate courses.\" — The Aeronautical Journal, May 2018 Issue

Description There have been impressive achievements in the last few years in the technologies associated with turboramjets and other combined cycle engines. These technologies, including their thermal management and integration with the vehicle, are the principal concerns of this volume. Drawing on the expertise of international engineers and researchers in the field of high-speed vehicle propulsion systems, these articles, written by experts from the United States, Russia, Germany, Japan, Belgium, and Israel, highlight developments in the industry.

Mounting evidence has highlighted the role of aviation non-CO2 emissions in anthropogenic climate change. Of particular importance is the impact of contrails, to which recent studies attribute over one-third of the total effective radiative forcing from aircraft operations. However, the relative importance of the aircraft-design-dependent and environmental factors that influence the formation of persistent contrails is not yet well understood. In this paper, we use ERA5 data from the 2010s to better understand the interplay between the factors on a climatological timescale. We identify ice supersaturation as the most limiting factor for all aircraft designs considered, underscoring the importance of accurately estimating ice supersaturated regions. We also develop climatological relationships that describe potential persistent contrail formation as a function of the pressure level and Schmidt–Appleman mixing line slope. We find that the influence of aircraft design on persistent contrail formation reduces with increasing altitude. Compared to a state-of-the-art conventional aircraft with an overall propulsion system efficiency of 0.37, water vapour extraction technologies envisioned for the future have the potential to reduce persistent contrail formation by up to 85.1 %. On the other hand, compared to the same reference, hydrogen combustion and fuel cell aircraft could increase globally averaged persistent contrail formation by 46.5 % and 54.7 % respectively. Due to differing contrail properties, further work is required to translate these changes into climate impacts. This study is a step towards the development of a new and computationally inexpensive method to analyse the contrail climate impact of novel aviation fuels and propulsion technologies.

DescriptionGas Turbine Propulsion Systems in Aerospace & Defense pulls together all of the systems and subsystems associated with gas turbine engines in aircraft and marine warship applications. The subject of engine (fuel) control has undergone major changes in the past 20 years due to the advent of the digital electronic control technology and therefore existing books on the subject are typically out of date with current methods. Gas Turbine Propulsion Systems in Aerospace & Defense discusses the latest technologies in this area, including marine propulsion which is an emerging application area for the technology that involves some interesting modifications to aviation technologies. The book includes chapters on aircraft engine systems functional overview, marine propulsion systems, fuel control and power management systems, engine lubrication and scavenging systems, nacelle and ancillary systems, engine certification, unique engine systems and future developments in gas turbine propulsion systems. The book includes case studies of specific engines; applications within marine defense; and a companion website featuring full color images.

The propulsion system for an aircraft is one of its most crucial systems; therefore, its reliable work must be ensured during all operational conditions and regimes. Modern materials, techniques and methods are used to ensure this goal; however, there is still room for improvement of this complex system. The proposed manuscript describes a progressive approach for the mechanical properties prediction of the turbine section during jet engine operation using an artificial neural network, and it illustrates its application on a small experimental jet engine. The mechanical properties are predicted based on the measured temperature, pressure and rpm during the jet engine operation, and targets for the artificial neural network are finite element analyses results. The artificial neural network (ANN) is trained using training data from the experimental measurements (temperatures, pressure and rpm) and the results from finite element analyses of the small experimental engine turbine section proposed in the paper. The predicted mechanical stress by ANN achieved high accuracy in comparison to the finite element analyses results, with an error of 1.38% for predicted mechanical stress and correlation coefficients higher than 0.99. Mechanical stress and deformation prediction of the turbine section is a time-consuming process when the finite element method is employed; however, the method with artificial neural network application presented in this paper decreased the solving time significantly. Mechanical structural analyses performed in ANSYS software using finite element modeling take around 30–40 min for one load step. In contrast, the artificial neural network presented in this paper predicts the stress and deformation for one load step in less than 0.00000044 s.

This volume chronicles the making of the Harrier Jump Jet--the innovative Cold War fighter aircraft designed to operate from virtually anywhere.In 1957, the British engine manufacturer Bristol Siddeley turned aircraft design on its head with the creation of the Pegasus engine.Until then, aircraft designs would seek out suitable engines.