[PDF] Progress In Aeronautical Sciences Vol 8 eBook

Author : D. Küchemann
Publisher : Elsevier
Page : 442 pages
File Size : 29,82 MB
Release : 2016-07-02
Category : Technology & Engineering
ISBN : 1483149080

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Progress in Aeronautical Sciences, Volume 8 is a collection of papers that covers the widening field of aeronautical sciences. The first article deals with problems in fluid mechanics and practical aerodynamics. This paper includes reducing problems to integral equations; the comparison of calculated results with exact analytic solutions; and with experimental pressure distributions using various configurations. The book follows this discussion with a review of the methods for designing swept-winged aircraft, including the design of a symmetrical-fuselage combination at zero incidence. The text also reviews the propulsion characteristics of a hypothetical aircraft flying at hypersonic speeds, and then focuses on air-breathing engines to power hypersonic aircrafts of which the scramjet is the most promising. The publication renders a comprehensive report on the viscous flow in boundary layers in ducts under rarefied conditions. The book then reviews investigations made on the viscous flow through tubes, both in continuum flow and in free-molecule flow. Another paper develops the fundamental mathematical and physical bases of magnetohydrodynamic flow through ducts in the presence of an applied electromagnetic field. Such review is useful when applied to electromagnetic flowmeters, pumps, or generators. The volume can be helpful for aerodynamic researchers, aviation technologists and designers, and aeronautical engineers.

Author : D. Küchemann
Publisher : Elsevier
Page : 481 pages
File Size : 21,27 MB
Release : 1968
Category : Technology & Engineering
ISBN : 1483148874

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Progress in Aeronautical Sciences

Author : BREBBIA
Publisher : Springer Science & Business Media
Page : 226 pages
File Size : 49,1 MB
Release : 2013-11-11
Category : Science
ISBN : 147576300X

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A substantial amount of research on Boundary Elements has taken place since publication of the first Volume of this series. Most of the new work has concentrated on the solution of non-linear and time dependent problems and the development of numerical techniques to increase the efficiency of the method. Chapter 1 of this Volume deals with the solution of non-linear potential problems, for which the diffusivity coefficient is a function of the potential and the boundary conditions are also non-linear. The recent research reported here opens the way for the solution of a: large range of non-homogeneous problems by using a simple transformation which linearizes the governing equations and consequently does not require the use of internal cells. Chapter 2 summarizes the main integral equations for the solution of two-and three dimensional scalar wave propagation problems. This is a type of problem that is well suited to boundary elements but generally gives poor results when solved using finite elements. The problem of fracture mechanics is studied in Chapter 3, where the ad vantages of using boundary integral equations are demonstrated. One of the most interesting features of BEM i~ the possibility of describing the problem only as a function of the boundary unknowns, even in the presence of body, centrifugal and temperature induced forces. Chapter 4 explains how this can be done for two-and three-dimensional elastostatic problems.

Author : D. Küchemann
Publisher : Elsevier
Page : 327 pages
File Size : 17,28 MB
Release : 2016-07-04
Category : Technology & Engineering
ISBN : 1483155102

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Progress in Aeronautical Sciences, Volume 5, contains six articles that belong to the field of aerodynamics. This accords well with one of the declared purposes of this series, to serve the general reader with accounts of those parts of the subject remote from his specialized interest, not only because his field of specialization is likely to change during his career but also because we are all students of one science. The first paper gives a comprehensive survey of low-speed wind-tunnels, those early tools of the aerodynamicist which seem likely to retain their importance indefinitely. The second deals with a basic feature of the separation of a laminar boundary layer from a wall in two-dimensional flow: the bubble. The third reports on the more theoretical aspects of the IUTAM Symposium Transsonicum, which afforded a reunion of almost everyone who at one time or another had contributed to our knowledge of flows of mixed type. The fourth paper is concerned with a particular aspect of the theory of transonic flows and gives an exhaustive survey of this work. The fifth paper reports on a symposium devoted to rarefied gas dynamics. The final paper presents corrections to an article on the theory of sonic bangs, published in Volume 1 of this series.

Author : Th. Von Kármán
Publisher : Elsevier
Page : 621 pages
File Size : 10,59 MB
Release : 2014-05-15
Category : Technology & Engineering
ISBN : 1483164837

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Advances in Aeronautical Sciences, Volume 3 contains the proceedings of the Second International Congress in the Aeronautical Sciences held in Zurich, Switzerland, on September 12-16, 1960. The papers explore advances in aeronautical sciences and cover topics ranging from the role of entropy in the aerospace sciences to the theory of hypersonic flow over blunt-nosed slender bodies. The effect of boundary layer transition at the leading edge of thin wings on general nose separation is also discussed, along with the aerodynamics of aircraft shapes for flight at supersonic speeds. This book is comprised of 28 chapters and begins with a review of the importance of entropy in the aerospace sciences, citing the work of Nicolaus Sadi Carnot and Rudolf Clausius as well as enthalpy and free enthalpy. The link between entropy and molecular theory is also described before turning to the physics of jet streams and the aerodynamics of jet flaps. Other chapters consider a wide range of problems both of theoretical and practical importance, including the flow around a circular cylinder; the theory of boundary layer; the physics of transition from laminar to turbulent flow; and the theory and experimental knowledge of transonic, supersonic, and hypersonic flows. Due attention is given to the re-entry of missiles and space vehicles into the atmosphere; problems of trajectories; guidance of space vehicles; and power generation in space. The economic and technical aspects of air transportation are also highlighted. This volume will be of interest to scientists and engineers in aeronautics and astronautics.