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Books > Professional & Technical > Mechanical engineering & materials > Mechanical engineering > Engines & power transmission > General
This book contains the research report of the DFG Research Unit FOR 1845 (2014-2020) of the Universities of Bremen and Hannover. The thematic focus lies on speeding up ultra-precision machining technology by following a holistic approach to high-performance cutting. This includes ultra-precision milling at high spindle speeds (>10000 rpm), precision tool setting mechanisms for multi-cutting-edge diamond milling tools, magnetic levitation technology for high velocity feed axes, and dedicated control strategies for error identification and compensation at high speeds. Furthermore, automation and measurement aspects of the machine setup process especially for precision balancing of the spindle rotors are presented. Finally, it is demonstrated that how the developed technologies may be integrated into a common machine tool setup. The target audience primarily comprises research experts and practitioners in production engineering, but the book may also be of interest to graduate students alike.
Now in paperback, the life and legacy of the much-overlooked yet highly influential Robert Goddard--the brilliant, eccentric, and controversial pioneer of the space age. More famous in his day than Einstein or Edison, the troubled, solitary genius Robert H. Goddard was the American father of rocketry and space flight, launching the world's first liquid-fuel rockets and the first powered vehicles to break the sound barrier. Supported by Charles Lindbergh and Harry Guggenheim, he devised the methods that carried men to the moon. Today, no rocket or jet plane can fly without his inventions. Yet Goddard is the "forgotten man" of the Space Age. After the Germans launched the V-2 missiles of World War II, the American government usurped his 214 patents and suppressed his contributions in the name of national security, until it was forced to pay one million dollars for patent infringement. Goddard became famous again; monuments and medals raining upon his memory. But his renewed fame soon faded, and Goddard's pivotal role in launching the Space Age has been largely forgotten--until now.
Introduction to Rocket Science and Engineering, Second Edition, presents the history and basics of rocket science, and examines design, experimentation, testing, and applications. Exploring how rockets work, the book covers the concepts of thrust, momentum, impulse, and the rocket equation, along with the rocket engine, its components, and the physics involved in the generation of the propulsive force. The text also presents several different types of rocket engines and discusses the testing of rocket components, subsystems, systems, and complete products. The final chapter stresses the importance for rocket scientists and engineers to creatively deal with the complexities of rocketry.
Die abnehmenden sachleistungsorientierten Wettbewerbsdifferenzierungen fuhren im Maschinen- und Anlagenbau zum verstarkten Ausbau produktbezogener Dienstleistungen. Zum einen werden die Sachguter durch deren steigende K- plexitat immer dienstleistungsintensiver, zum anderen werden Dienstleistungen nicht langer als add-on zum Sachgut betrachtet, sondern erobern zunehmend die fuhrende Rolle im Systemgeschaft. Es gilt somit, die Primarprodukte des Masc- nenbaus durch vor- und nachgelagerte Dienstleistungen abzusichern. Dabei taucht immer haufiger die Forderung nach sogenannten Full-Service Angeboten auf, die neben Planung, Finanzierung, Inbetriebnahme und Rucknahme auch Verfugb- keitsgarantien durch die UEbernahme der Instandhaltung und Wartung sowie den Anlagenbetrieb umfassen koennen. Diese kundenseitigen Forderungen erklaren sich aus der wirtschaftlichen Notwendigkeit, nicht wertschoepfungsrelevante P- zesse auszulagern bzw. sich auf Kernkompetenzen zu fokussieren. Daruber hinaus eroeffnet die Nutzung multimedialer Internet-Techniken die globale Erschliessung dieser Dienstleistungspotentiale. Zukunftig wird man dem Kundenwunsch entsprechen mussen, pro produzierter Einheit oder pro Produktionsstunde der Maschine abzurechnen. Dabei definiert der Kunde nur noch die Kosten, Stuckzahlen und die Qualitatsstandards der auf der Anlage zu produzierenden Guter. Die technologische Maschinenauslegung verbleibt vollstandig in der Hand des Maschinenlieferanten ohne kundenseitige Auflagen. Dieses Geschaftsmodell kann bis zu einer dynamischen Aktualisierung der Produktionseinrichtungen zur kontinuierlichen Produktivitatssteigerung r- chen.
This book will assess and compare several options for ammonia co-fueling of diesel locomotives with integrated heat recovery, multigeneration (including on-board hydrogen fuel production from ammonia), and emission reduction subsystems from energy, exergy, and environmental perspectives. Economic considerations will be presented to compare the cost of the proposed systems for different scenarios such as carbon-tax rates, diesel fuel cost and ammonia cost. Fossil fuel consumption and the associated negative environmental impact of their combustion is a significant global concern that requires effective, practical, and sustainable solutions. From a Canadian perspective, the Transportation Sector contributes more than 25% of national greenhouse gas emissions due to fossil fuel combustion, largely due to road vehicles (cars, light and heavy duty trucks). This is a complex and critical challenge to address, particularly in urban areas with high population density. There is a need to develop alternative energy solutions for mass passenger and freight transportation systems that will reduce both the traffic-volume of road vehicles as well as the emissions from the mass transportation systems. The book will be helpful to students in senior-level undergraduate and graduate level courses related to energy, thermodynamics, thermal sciences, combustion, HVAC&R, etc. The quantitative comparative assessment of such alternative energy systems provided by this book will be useful for researchers and professionals interested sustainable development.
Gas Turbines Modeling, Simulation, and Control: Using Artificial Neural Networks provides new approaches and novel solutions to the modeling, simulation, and control of gas turbines (GTs) using artificial neural networks (ANNs). After delivering a brief introduction to GT performance and classification, the book: Outlines important criteria to consider at the beginning of the GT modeling process, such as GT types and configurations, control system types and configurations, and modeling methods and objectives Highlights research in the fields of white-box and black-box modeling, simulation, and control of GTs, exploring models of low-power GTs, industrial power plant gas turbines (IPGTs), and aero GTs Discusses the structure of ANNs and the ANN-based model-building process, including system analysis, data acquisition and preparation, network architecture, and network training and validation Presents a noteworthy ANN-based methodology for offline system identification of GTs, complete with validated models using both simulated and real operational data Covers the modeling of GT transient behavior and start-up operation, and the design of proportional-integral-derivative (PID) and neural network-based controllers Gas Turbines Modeling, Simulation, and Control: Using Artificial Neural Networks not only offers a comprehensive review of the state of the art of gas turbine modeling and intelligent techniques, but also demonstrates how artificial intelligence can be used to solve complicated industrial problems, specifically in the area of GTs.
Dieses bekannte und bewahrte Fachbuch zur Festigkeitsberechnung fuhrt die im Maschinenbaustudium gelehrten Grundlagen uber Werkstoffkunde, Mechanik und Maschinenelemente zusammen. Es ist frei von unnoetigem Ballast, klar aufgebaut und gibt in ubersichtlicher Form die wesentlichen Festigkeitsprobleme im Dampfkessel-, Behalter- und Rohrleitungsbau wieder. Der Autor der Neuauflage brachte das Werk auf den neuesten Stand der Technik und erweiterte es um ein Kapitel uber Explosionsfestigkeit von Apparaten und Rohrleitungen und um ein Kapitel uber Spannungsbewertung explosionsdruckstossfesten Bauteilen. Das Buch berucksichtigt die seit 1990 neu erschienenen AD-Merkblatter, insbesondere zur Spannungsbewertung. Es ist sowohl fur den in der Praxis tatigen Ingenieur als auch fur Studierende eine wertvolle Hilfe und Anleitung bei der Loesung von Festigkeitsfragen.
A modern pedagogical treatment of the latest industry trends in rocket propulsion, developed from the authors' extensive experience in both industry and academia. Students are guided along a step-by-step journey through modern rocket propulsion, beginning with the historical context and an introduction to top-level performance measures, and progressing on to in-depth discussions of the chemical aspects of fluid flow combustion thermochemistry and chemical equilibrium, solid, liquid, and hybrid rocket propellants, mission requirements, and an overview of electric propulsion. With a wealth of homework problems (and a solutions manual for instructors online), real-life case studies and examples throughout, and an appendix detailing key numerical methods and links to additional online resources, this is a must-have guide for senior and first year graduate students looking to gain a thorough understanding of the topic along with practical tools that can be applied in industry.
This book presents the most up-to-date methods of three-dimensional modeling of the fluid dymanics and the solid-fluid interaction within these machines, which are still being developed. Adding modeling to the design process makes it possible not only to predict flow patterns more accurately, and also to determine distorting effects on rotors and casing of pressure and temperature distribution within the compressor. Examples outline the scope of the applied mathematical model.
This book covers all aspects of supercharging internal combustion engines. It details charging systems and components, the theoretical basic relations between engines and charging systems, as well as layout and evaluation criteria for best interaction. Coverage also describes recent experiences in design and development of supercharging systems, improved graphical presentations, and most advanced calculation and simulation tools.
This professional book deals with belt drying of sewage sludge, mainly of municipal but also of industrial origin. The wastewater treatment resulting in sludge production is briefly described. The types of sludge and their degree of stabilization is treated in depth as they have a high impact on their suitability for belt drying and the necessary exhaust air treatment. Different belt drying systems with or without condensing units and with extruding of dewatered sludge or partial recirculation of dried sludge are presented. Specific water evaporation and energy demand are tabulated for each dryer system on basis of indications of dryer manufacturers, measurements or information of dryer operators. Different sources for thermal energy are stipulated and complete systems of energy supply with internal or external usage of exhaust energy described. Occurring gas compounds in dryer exhaust air and their special features are mentioned in depth. The components and complete systems for exhaust air cleaning are discussed also in their efficiency of removal of individual odorous gas components or of total amount of volatile organic compounds. Conveying systems and storage of dewatered sludge as well as of dried sludge are described together with the related safety issues. Dryer control as well as ATEX, SIL and HAZOP issues and economic aspects are discussed briefly in individual chapters. The book will be useful for engineering enterprises and consultants designing belt drying systems for sludge, but will also transfer useful information to operators. Also authorities dealing with the permission of sludge drying plants will find important aspects with regard to environmental protection and reasonable economic and continuous operation under safe conditions.
Klassische Pkw werden gerne als technisches Kulturgut gesehen. Das ist mit ein Grund, weshalb die Zahl derer, die Young- und Oldtimerfahrzeuge technisch in fahrfertigen Zustand versetzen und darin halten, stetig steigt. Hierzu ist technisches Verständnis, wie ein einzelnes Erzeugnis oder ein gesamtes System funktioniert, eine große Hilfe.Das Buch „Klassische Ottomotorsteuerung“, basierend auf der zum Teil stark überarbeiteten und ergänzten Gelben Reihe von Bosch, greift auf 416 Seiten genau diesen Sachverhalt auf und erklärt in anschaulicher Weise die Grundlagen zu Ottomotoren, insbesondere die Themen Gemischaufbereitung und Zündung. Neben klassischen Vergasern und Zündsystemen werden auch sämtliche Jetronic-Systeme abgebildet. Ein Kapitel zur frühen Motronic, die Zündung und Gemischaufbereitung erstmals miteinander vereint, rundet das Gesamtbild ab. Das Buch ist somit für technikaffine Besitzer von Young- und Oldtimerfahrzeugen ein enormer Wissensfundus, um die technischen Funktionen der historischen Technik besser verstehen zu können.
This book presents new research results in the field of gravity compensation in robotic systems. It explores topics such as gravity compensation of planar articulated robotic manipulators; the stiffness modeling of manipulators with gravity compensators; the multi-degree-of-freedom counter-balancing; the design of actuators with partial gravity compensation; a cable-driven robotic suit with gravity compensation for load carriage; various compensation systems for medical cobots and assistive devices; gravity balancing of parallel robots. The volume demonstrates that gravity compensation methods continue to develop, and new approaches and solutions are constantly being reported. These solutions apply both to new structural solutions and to their new applications. Cobots, exoskeletons and robotic suits, assistive devices, as well as biomechanical systems are among the most promising applications and most pressing areas for further innovation.
This book comprehensively discusses diesel combustion phenomena like ignition delay, fuel-air mixing, rate of heat release, and emissions of smoke, particulate and nitric oxide. It enables quantitative evaluation of these important phenomena and parameters. Most importantly, it attempts to model them with constants that are independent of engine types and hence they could be applied by the engineers and researchers for a general engine. This book emphasizes the importance of the spray at the wall in precisely describing the heat release and emissions for most of the engines on and off-road. It gives models for heat release and emissions. Every model is thoroughly validated by detailed experiments using a broad range of engines. The book describes an elegant quasi-one-dimensional model for heat release in diesel engines with single as well as multiple injections. The book describes how the two aspects, namely, fuel injection rate and the diameter of the combustion bowl in the piston, have enabled meeting advanced emission, noise, and performance standards. The book also discusses the topics of computational fluid dynamics encompassing RANS and LES models of turbulence. Given the contents, this book will be useful for students, researchers and professionals working in the area of vehicle engineering and engine technology. This book will also be a good professional book for practising engineers in the field of combustion engines and automotive engineering.
This book focuses on gasoline compression ignition (GCI) which offers the prospect of engines with high efficiency and low exhaust emissions at a lower cost. A GCI engine is a compression ignition (CI) engine which is run on gasoline-like fuels (even on low-octane gasoline), making it significantly easier to control particulates and NOx but with high efficiency. The state of the art development to make GCI combustion feasible on practical vehicles is highlighted, e.g., on overcoming problems on cold start, high-pressure rise rates at high loads, transients, and HC and CO emissions. This book will be a useful guide to those in academia and industry.
This book discusses the impact of fuels characteristics and their effects on the combustion processes in internal combustion engines. It includes the analysis of a variety of biofuels (alcohol fuels and biodiesel) and biogases (natural gas, hydrogen, etc.), providing valuable information related to consequent effects on performance and emissions. The contents focus on recent results and current trends of fuel utilization in the transport sector. State-of-the-art of clean fuels application are also discussed. Thighs book will be of interest to those in academia and industry involved in fuels, IC engines, engine instrumentation, and environmental research.
This handbook deals with the vast subject of thermal management of engines and vehicles by applying the state of the art research to diesel and natural gas engines. The contributions from global experts focus on management, generation, and retention of heat in after-treatment and exhaust systems for light-off of NOx, PM, and PN catalysts during cold start and city cycles as well as operation at ultralow temperatures. This book will be of great interest to those in academia and industry involved in the design and development of advanced diesel and CNG engines satisfying the current and future emission standards.
This book focuses on the simulation and modeling of internal combustion engines. The contents include various aspects of diesel and gasoline engine modeling and simulation such as spray, combustion, ignition, in-cylinder phenomena, emissions, exhaust heat recovery. It also explored engine models and analysis of cylinder bore piston stresses and temperature effects. This book includes recent literature and focuses on current modeling and simulation trends for internal combustion engines. Readers will gain knowledge about engine process simulation and modeling, helpful for the development of efficient and emission-free engines. A few chapters highlight the review of state-of-the-art models for spray, combustion, and emissions, focusing on the theory, models, and their applications from an engine point of view. This volume would be of interest to professionals, post-graduate students involved in alternative fuels, IC engines, engine modeling and simulation, and environmental research.
This book provides an overview of clean fuels for sustainable mobility by highlighting on world energy outlook, technic-economic assessment, and the key aspects of the fuel production processes and their possible large impact on various transportation sector segments. The content initially deals with different types of alternative fuels, for example, ethanol, methanol, butanol, hydrogen, biogas, biodiesel, etc. It also focuses on current trends in the automotive sector. Various aspects of the clean fuels production process and formulation to improve the combustion characteristics and efficiency toward sustainability are considered. Some of the important fuels like hydrogen, ammonia, natural gas etc. are discussed in detail. This volume will be useful for the industrial and research community involved in fuels, combustion engines, and environmental research.
This book highlights ways of using gaseous and liquid e-fuels like hydrogen (H2), methane (CH4), methanol (CH3OH), DME (CH3-O-CH3), Ammonia (NH3), synthetic petrol and diesel, etc in existing engines and their effects on tailpipe emissions. The contents also cover calibration and optimization procedure for adaptation of these fuels. the volume also discusses the economical aspect of these fuels. Chapters include recent results and are focused on current trends of automotive sector. This book will be of interest to those in academia and industry involved in fuels, IC engines, engine instrumentation, and environmental research.
This book is based on advanced combustion technologies currently employed in internal combustion engines. It discusses different strategies for improving conventional diesel combustion. The volume includes chapters on low-temperature combustion techniques of compression-ignition engines which results in significant reduction of NOx and soot emissions. The content also highlights newly evolved gasoline compression technology and optical techniques in advanced gasoline direct injection engines. the research and its outcomes presented here highlight advancements in combustion technologies, analysing various issues related to in-cylinder combustion, pollutant formation and alternative fuels. This book will be of interest to those in academia and industry involved in fuels, IC engines, engine combustion research.
This book focuses on clean transport and mobility essential to the modern world. It discusses internal combustion engines (ICEs) and alternatives like battery electric vehicles (BEVs) which are growing fast. Alternatives to ICEs start from a very low base and face formidable environmental, material availability, and economic challenges to unlimited and rapid growth. Hence ICEs will continue to be the main power source for transport for decades to come and have to be continuously improved to improve transport sustainability. The book highlights the need to assess proposed changes in the existing transport system on a life cycle basis. The volume includes chapters discussing the challenges faced by ICEs as well as chapters on novel fuels and fuel/ engine interactions which help in this quest to improve the efficiency of ICE and reduce exhaust pollutants. This book will be of interest to those in academia and industry alike.
This book covers historical aspects and future directions of mechanical and industrial engineering. Chapters of this book include applied mechanics and design, tribology, machining, additive manufacturing and management of industrial technologies.
This book discusses the dynamic analysis of rigid-flexible robots and multibody systems with serial as well as closed-loop architecture. The book presents a formulation of dynamic model of rigid-flexible robots based on the unique approach of de-coupling of natural orthogonal complements of velocity constraints. Based on this formulation, a computationally efficient and numerically stable forward dynamics algorithms for serial-chain and closed-loop robotic systems with rigid or flexible or rigid-flexible links is presented. The proposed algorithm is shown to be a numerically efficient for forward dynamics based on the investigation methodologies built on eigen value analytics. Precision and functionality of the simulation algorithms is presented/illustrated with application on different serial and closed-loop systems (both planar and spatial types). Some of the major robotic arms used to illustrate the proposed dynamic formulation and simulation algorithms are PUMA robot, Stanford robot arm, and Canadarm. It is envisaged that the book will be useful for researchers working on the development of rigid-flexible robots for use in defense, space, atomic energy, ocean exploration, and the manufacturing of biomedical equipment.
This book draws together the most interesting recent results to emerge in mechanical engineering in Russia, providing a fascinating overview of the state of the art in the field in that country which will be of interest to a wide readership. A broad range of topics and issues in modern engineering is discussed, including dynamics of machines, materials engineering, structural strength and tribological behavior, transport technologies, machinery quality and innovations. The book comprises selected papers presented at the 10th conference "Modern Engineering: Science and Education", held at the Saint Petersburg State Polytechnic University in June 2021 with the support of the Russian Engineering Union. The authors are experts in various fields of engineering, and all of the papers have been carefully reviewed. The book will be of interest to mechanical engineers, lecturers in engineering disciplines and engineering graduates. |
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