Preliminary Investigation at Low Speeds of Swept Wings in Rolling Flow PDF Download
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Author: David Feigenbaum
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 36
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Book Description
Author: David Feigenbaum
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 36
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Book Description
Author: Wilhelm Tafel
Publisher:
ISBN:
Category : Rolling-mill machinery
Languages : en
Pages : 320
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Book Description
Author: William Letko
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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Book Description
An investigation was made in the Langley stability tunnel to determine the effect of airfoil profile of symmetrical sections on the rolling derivatives of three untapered wings having 45 deg sweepback. The wings had the following profiles normal to the leading edge: biconvex (12% thick), NACA 65 sub 1 -012, and NACA 0012. The AR for each wing was 2.61. Calculations were made to determine the effect of different wing profiles on the stability boundaries and motions at subsonic speeds of a typical transonic airplane configuration. Results indicate that increasing the sharpness of the leading edge of the airfoil decreased the range of lift coefficients over which the derivatives maintained their initial trends and usually decreased the maximum values of the derivatives obtained in the unstalled range. Results of the calculations of the dynamic stability of the airplane configuration show only small changes in stability due to changes in airfoil profile.
Author: Zygmunt Wusatowski
Publisher: Elsevier
ISBN: 148315906X
Category : Technology & Engineering
Languages : en
Pages : 716
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Book Description
Fundamentals of Rolling presents the theoretical knowledge of longitudinal rolling in a comprehensive procedure. This book discusses the basic theory and principles of rolling processes. Comprised of seven chapters, this book begins with an overview of the three principal methods of rolling, including longitudinal, transverse, and skew rolling processes. This text then illustrates the constrained yield stress distribution along the gap due to work hardening on cold rolling between ideally smooth rolls. Other chapters consider the range of application of various types of rolls and show the basic dimensions of a roll. This book discusses as well the different types of rolls for various rolling mills, including blooming, plate, sheet, sheet bar, small section, heavy product, skin passing, and cold rolling mills. The final chapter explains the purpose of roll pass design to ensure the maximum output at minimum cost as well as to reduce the roll wear to a minimum. This book is a valuable resource for rolling mill engineers.
Author: Albert P. Martina
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 274
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Book Description
Author: Akira Azushima
Publisher: Springer
ISBN: 3319172263
Category : Technology & Engineering
Languages : en
Pages : 346
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Book Description
This book provides an in-depth description of the fundamental tribological aspects of cold and hot sheet rollings. The author describes new developments in the rolling processes, the rolling oils, the rolling rolls and the structural materials resulting from sheet rolling technology and their practical applications. The author includes comprehensive details on both friction and lubrication in rolling.
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 894
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Book Description
Author: Jingwei Zhao
Publisher: CRC Press
ISBN: 1498730345
Category : Science
Languages : en
Pages : 644
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Book Description
Advanced high strength steels (AHSSs) for auto-making are primarily produced by rolling, plus heat treatment technologies if necessary. However, due to the metallurgical complexity of AHSSs, it is impossible to roll all of the AHSS grades in a rolling mill with the same rolling technology. Each of AHSSs has unique applications in vehicles, and specified rolling technologies are required to produce high quality AHSS products where they might be the best employed to meet performance demands of the automotive parts. Such background has prompted the publication of this scholarly book in the area of rolling of AHSSs with a purpose of providing readers with a valuable technical document that can be used in the research and development of AHSSs for automotive and other manufacturing industries. With contributors from USA, Germany, Poland, Italy, Spain, Austria, Australia, China, India and Iran, the book highlights the latest advances in rolling technologies of AHSSs. It focuses on the theory, simulation and practice of the rolling of AHSSs: The book introduces the history, types and advances of AHSSs and their processes; proposes new theory that is applicable to the rolling of AHSSs, presents mathematical and numerical modelling of AHSSs in rolling; covers thermomechanical processing technologies of AHSSs; provides case studies on the rolling practice of the most popular AHSSs and includes other rolling-related technologies of AHSSs. The book will be useful for both theoretical and applied research aimed at AHSSs rolling technologies, and will be a scientific and valuable literature for the metallurgists, engineers, materials scientists, academics and graduate students who are studying and working with AHSSs and their rolling technologies worldwide.
Author: Piet M. Lugt
Publisher: John Wiley & Sons
ISBN: 1118353919
Category : Technology & Engineering
Languages : en
Pages : 472
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Book Description
The definitive book on the science of grease lubrication for roller and needle bearings in industrial and vehicle engineering. Grease Lubrication in Rolling Bearings provides an overview of the existing knowledge on the various aspects of grease lubrication (including lubrication systems) and the state of the art models that exist today. The book reviews the physical and chemical aspects of grease lubrication, primarily directed towards lubrication of rolling bearings. The first part of the book covers grease composition, properties and rheology, including thermal and dynamics properties. Later chapters cover the dynamics of greased bearings, including grease life, bearing life, reliability and testing. The final chapter covers lubrications systems – the systems that deliver grease to the components requiring lubrication. Grease Lubrication in Rolling Bearings: Describes the underlying physical and chemical properties of grease. Discusses the effect of load, speed, temperature, bearing geometry, bearing materials and grease type on bearing wear. Covers both bearing and grease performance, including thermo-mechanical ageing and testing methodologies. It is intended for researchers and engineers in the petro-chemical and bearing industry, industries related to this (e.g. wind turbine industry, automotive industry) and for application engineers. It will also be of interest for teaching in post-graduate courses.
Author: Jianli Song
Publisher: Springer
ISBN: 3662540487
Category : Technology & Engineering
Languages : en
Pages : 288
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Book Description
This book presents in detail the theory, processes and equipment involved in cold rolling precision forming technologies, focusing on spline and thread shaft parts. The main topics discussed include the status quo of research on these technologies; the design and calculation of process parameters; the numerical simulation of cold rolling forming processes; and the equipment used. The mechanism of cold rolling forming is extremely complex, and research on the processes, theory and mechanical analysis of spline cold rolling forming has remained very limited to date. In practice, the forming processes and production methods used are mainly chosen on the basis of individual experience. As such, there is a marked lack of both systematic, theory-based guidelines, and of specialized books covering theoretical analysis, numerical simulation, experiments and equipment used in spline cold rolling forming processes. Illustrated using tables, 3D photographs and formula derivations, this book fills that gap in the literature.
