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Author : H. Deconinck
Publisher :
ISBN 13 :
Total Pages : 742 pages
Book Rating : 4.F/5 ( download)
Download or read book CFD-based Aircraft Drag Prediction and Reduction written by H. Deconinck and published by . This book was released on 2003 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (227 download)
Download or read book Aircraft Drag Prediction and Reduction. Addendum 1 written by and published by . This book was released on 1986 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The accurate prediction of aircraft aerodynamic drag is a generally recognized and respected problem. So is the accurate measurement of drag in the wind tunnel that, eventually, forms the basis for full scale drag prediction. In the past 15 years Computational Fluid Dynamics (CFD) has emerged as an additional and complementary tool for aerodynamic design and analysis. The purpose of this lecture is to review and comment on its role as a drag prediction and analysis tool. The aerodynamic design process of aircraft is characterized by a sequence of design and analysis cycles. In each cycle a (further) reduction of drag will, generally, be one, but not the only objective. Identification of the source of an unacceptably or undesirably high drag level or drag variation with lift or Mach number is a prerequisite for a successful drag reduction program. Identification of drag sources may follow different approaches. The classical or phenomenological one is based on the availability of overall force (wind tunnel) data only, in combination with simple, semi-empirical theory. CFD, as we shall see later, offers possibilities for a more physically/analytically oriented approach in which the various contributions to drag are distinguished by the underlying physical mechanisms rather than by the observed aerodynamic force variation phenomena. It will also be demonstrated that, in spite of its current shortcomings, CFD is a powerful tool for drag diagnostics. The final part of the lecture contains a discussion on computational drag minimization.
Author :
Publisher :
ISBN 13 : 9789283515074
Total Pages : 29 pages
Book Rating : 4.5/5 (15 download)
Download or read book Aircraft Drag Prediction and Reduction written by and published by . This book was released on 1985 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. W. Slooff
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.3/5 (243 download)
Download or read book Aircraft Drag Prediction and Reduction written by J. W. Slooff and published by . This book was released on 1986 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircraft Drag Prediction and Reduction written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles C. Peavey
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Drag Prediction of Military Aircraft Using CFD written by Charles C. Peavey and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircraft Drag Prediction and Reduction Computational Drag Analyses and Minimization; Mission Impossible? (addendum 1). written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Thiede
Publisher : Springer Science & Business Media
ISBN 13 : 3540453598
Total Pages : 382 pages
Book Rating : 4.5/5 (44 download)
Download or read book Aerodynamic Drag Reduction Technologies written by Peter Thiede and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: ------------------------------------------------------------ This volume contains the Proceedings of the CEAS/DragNet European Drag Reduction Conference held on 19-21 June 2000 in Potsdam, Germany. This conference, succeeding the European Fora on Laminar Flow Technology 1992 and 1996, was initiated by the European Drag Reduction Network (DragNet) and organised by DGLR under the auspice of CEAS. The conference addressed the recent advances in all areas of drag reduction research, development, validation and demonstration including laminar flow technology, adaptive wing concepts, turbulent and induced drag reduction, separation control and supersonic flow aspects. This volume which comprises more than 40 conference papers is of particular interest to engineers, scientists and students working in the aeronautics industry, research establishments or academia.
Author : J. van der Vooren
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (694 download)
Download or read book CFD-based Drag Prediction written by J. van der Vooren and published by . This book was released on 1994 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : NATO. ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT.
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (131 download)
Download or read book AIRCRAFT DRAG PREDICTION AND REDUCTION. written by NATO. ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT. and published by . This book was released on with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : AIAA
ISBN 13 : 9781600863783
Total Pages : 542 pages
Book Rating : 4.8/5 (637 download)
Download or read book Viscous Drag Reduction in Boundary Layers written by and published by AIAA. This book was released on 1990 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bruce H. Carmichael
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.0/5 ( download)
Download or read book Personal Aircraft Drag Reduction written by Bruce H. Carmichael and published by . This book was released on 2000 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Simeon Andrew Ning
Publisher : Stanford University
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.F/5 ( download)
Download or read book Aircraft Drag Reduction Through Extended Formation Flight written by Simeon Andrew Ning and published by Stanford University. This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formation flight has the potential to significantly reduce the fuel consumption of long range flights, even with existing aircraft. This research explores a safer approach to formation flying of transport aircraft, which we term extended formation flight. Extended formations take advantage of the persistence of cruise wakes and extend the streamwise separation between the aircraft by at least five wingspans. Classical aerodynamic theory suggests that the total induced drag of the formation should not change as the streamwise separation is increased, but the large separation distances of extended formation flight violate the simple assumptions of these theorems. At large distances, considerations such as wake rollup, atmospheric effects on circulation decay, and vortex motion become important to consider. We first examine the wake rollup process in the context of extended formations and develop an appropriate physics-based model. Using this model, this dissertation addresses three aspects of formation flight: longitudinally extended formations, compressibility effects, and formations of heterogeneous aircraft. Uncertainty analysis is used to investigate the induced drag savings of extended formations in the presence of variation in atmospheric properties, limitations of positioning accuracy, and uncertainty in model parameters. Next, the methodology is integrated with an Euler solver to assess the impact of compressibility while flying in formation. Finally, we examine the important considerations for optimally arranging formations of non-identical aircraft.
Author : Norbert Kroll
Publisher : Springer Science & Business Media
ISBN 13 : 3540323821
Total Pages : 311 pages
Book Rating : 4.5/5 (43 download)
Download or read book MEGAFLOW - Numerical Flow Simulation for Aircraft Design written by Norbert Kroll and published by Springer Science & Business Media. This book was released on 2006-10-02 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerospace industry increasingly relies on advanced numerical simulation tools in the early design phase. This volume provides the results of a German initiative which combines many of the CFD development activities from the German Aerospace Center (DLR), universities, and aircraft industry. Numerical algorithms for structured and hybrid Navier-Stokes solvers are presented in detail. The capabilities of the software for complex industrial applications are demonstrated.
Author : Doug McLean
Publisher : John Wiley & Sons
ISBN 13 : 1119967511
Total Pages : 581 pages
Book Rating : 4.1/5 (199 download)
Download or read book Understanding Aerodynamics written by Doug McLean and published by John Wiley & Sons. This book was released on 2012-12-26 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much-needed, fresh approach that brings a greater insight into the physical understanding of aerodynamics Based on the author’s decades of industrial experience with Boeing, this book helps students and practicing engineers to gain a greater physical understanding of aerodynamics. Relying on clear physical arguments and examples, Mclean provides a much-needed, fresh approach to this sometimes contentious subject without shying away from addressing "real" aerodynamic situations as opposed to the oversimplified ones frequently used for mathematical convenience. Motivated by the belief that engineering practice is enhanced in the long run by a robust understanding of the basics as well as real cause-and-effect relationships that lie behind the theory, he provides intuitive physical interpretations and explanations, debunking commonly-held misconceptions and misinterpretations, and building upon the contrasts provided by wrong explanations to strengthen understanding of the right ones. Provides a refreshing view of aerodynamics that is based on the author’s decades of industrial experience yet is always tied to basic fundamentals. Provides intuitive physical interpretations and explanations, debunking commonly-held misconceptions and misinterpretations Offers new insights to some familiar topics, for example, what the Biot-Savart law really means and why it causes so much confusion, what “Reynolds number” and “incompressible flow” really mean, and a real physical explanation for how an airfoil produces lift. Addresses "real" aerodynamic situations as opposed to the oversimplified ones frequently used for mathematical convenience, and omits mathematical details whenever the physical understanding can be conveyed without them.
Author : Andreas Dillmann
Publisher : Springer Science & Business Media
ISBN 13 : 3642142435
Total Pages : 629 pages
Book Rating : 4.6/5 (421 download)
Download or read book New Results in Numerical and Experimental Fluid Mechanics VII written by Andreas Dillmann and published by Springer Science & Business Media. This book was released on 2010-10-05 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: th This volume contains the papers presented at the 16 DGLR/STAB-Symposium held at the Eurogress Aachen and organized by RWTH Aachen University, Germany, November, 3 - 4, 2008. STAB is the German Aerospace Aerodynamics Association, founded towards the end of the 1970's, whereas DGLR is the German Society for Aeronautics and Astronautics (Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal Oberth e.V.). The mission of STAB is to foster development and acceptance of the discipline “Aerodynamics” in Germany. One of its general guidelines is to concentrate resources and know-how in the involved institutions and to avoid duplication in research work as much as possible. Nowadays, this is more necessary than ever. The experience made in the past makes it easier now, to obtain new knowledge for solving today's and tomorrow's problems. STAB unites German scientists and engineers from universities, research-establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics for aerospace and other applications. This has always been the basis of numerous common research activities sponsored by different funding agencies. Since 1986 the symposium has taken place at different locations in Germany every two years. In between STAB workshops regularly take place at the DLR in Göttingen.
Author : NATO. ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT.
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (131 download)
Download or read book AIRCRAFT DRAG PREDICTION AND REDUCTION - COMPUTATIONAL DRAG ANALYSIS AND MINIMIZATION; MISSION IMPOSSIBLE?. written by NATO. ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT. and published by . This book was released on with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
