Download or read book Minimum Induced Drag in Wing fuselage Interference written by Perry A. Pepper and published by . This book was released on 1941 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: By means of a general theorem founded on the basis of Prandtl's theory of the lifting line, a method is derived for obtaining the minimum induced drag of airfoils in the proximity of ideal internal boundaries. The theorem is applied to the case of an ideal wing-fuselage combination consisting of a lifting line intersecting an infinitely long circular cylindrical to determine the effect of wing height on the minimum induced drag. The case of ideal combinations with constant circulation is also considered in detail, as it has been treated erroneously in a previous analysis. The analysis presented here incidentally reveals some errors in previous work on aerodynamic theory.
Download or read book Interference Drag in a Simulated Wing fuselage Juncture written by L. Kubendran and published by . This book was released on 1984 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interference Drag Air Drag written by Sighard F. Hoerner and published by . This book was released on 1950 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Note National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1956 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interference of Wing and Fuselage from Tests of 17 Combinations in the N A C A Variable density Tunnel Combinations with Special Junctures written by Albert Sherman and published by . This book was released on 1938 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the wing-fuselage interferences investigation in progress in the N.A.C.A. variable-density wind tunnel, a method of eliminating the interference burble associated with critical midwing combinations was investigated. The interference burble of the critical midewing combination was shown to respond to modifications at the nose of the juncture and to be entirely suppressed with little or no adverse effect on the high-speed drag by special leading-edge fillets.
Download or read book On the Minimum Induced Drag of Wings written by Albion H. Bowers and published by BiblioGov. This book was released on 2013-06 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the types of drag, induced drag is associated with the creation and generation of lift over wings. Induced drag is directly driven by the span load that the aircraft is flying at. The tools by which to calculate and predict induced drag we use were created by Ludwig Prandtl in 1903. Within a decade after Prandtl created a tool for calculating induced drag, Prandtl and his students had optimized the problem to solve the minimum induced drag for a wing of a given span, formalized and written about in 1920. This solution is quoted in textbooks extensively today. Prandtl did not stop with this first solution, and came to a dramatically different solution in 1932. Subsequent development of this 1932 solution solves several aeronautics design difficulties simultaneously, including maximum performance, minimum structure, minimum drag loss due to control input, and solution to adverse yaw without a vertical tail. This presentation lists that solution by Prandtl, and the refinements by Horten, Jones, Kline, Viswanathan, and Whitcomb
Download or read book On the Minimum Induced Drag of Wings Or Thinking Outside the Box written by Albion H. Bowers and published by BiblioGov. This book was released on 2013-06 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the types of drag, induced drag is associated with the creation and generation of lift over wings. Induced drag is directly driven by the span load that the aircraft is flying at. The tools by which to calculate and predict induced drag we use were created by Ludwig Prandtl in 1903. Within a decade after Prandtl created a tool for calculating induced drag, Prandtl and his students had optimized the problem to solve the minimum induced drag for a wing of a given span, formalized and written about in 1920. This solution is quoted in textbooks extensively today. Prandtl did not stop with this first solution, and came to a dramatically different solution in 1932. Subsequent development of this 1932 solution solves several aeronautics design difficulties simultaneously, including maximum performance, minimum structure, minimum drag loss due to control input, and solution to adverse yaw without a vertical tail. This presentation lists that solution by Prandtl, and the refinements by Horten, Jones, Kline, Viswanathan, and Whitcomb.
Download or read book Wing Theory written by Robert Thomas Jones and published by Princeton University Press. This book was released on 2014-07-14 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originator of many of the theories used in modern wing design, Robert T. Jones surveys the aerodynamics of wings from the early theories of lift to modern theoretical developments. This work covers the behavior of wings at both low and high speeds, including the range from very low Reynolds numbers to the determination of minimum drag at supersonic speed. Emphasizing analytical techniques, Wing Theory provides invaluable physical principles and insights for advanced students, professors, and aeronautical engineers, as well as for scientists involved in computational approaches to the subject. This book is based on over forty years of theoretical and practical work performed by the author and other leading researchers in the field of aerodynamics. Originally published in 1990. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book The Theoretical Lateral Motions of an Automatically Controlled Airplane Subjected to a Yawing moment Disturbance written by Frederick H. Imlay and published by . This book was released on 1941 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lateral motion resulting from a disturbance of the type produced by asymmetric loss of thrust has been determined for a hypothetical average airplane equipped with an automatic pilot. Plots of the resultant motion and the various modes that constitute the motion are presented for controls fixed and for various amounts of automatic control. The automatic control is assumed to be of a type that produces aileron deflections proportional to the angle of bank and rudder deflections proportional to the angle of azimuth. The use of an automatic control may introduce either of two modes. The first mode is primarily a rolling oscillation; the second is a poorly damped long-period oscillation in azimuth and bank . The motion following any change in trim causes the airplane to reach a state of equilibrium on a different flight heading from that existing before the disturbance and the airplane assumes a new flight attitude.
Download or read book General Theory of Wave drag Reduction for Combinations Employing Quasi cylindrical Bodies with an Application to Swept wing and Body Combinations written by Jack N. Nielsen and published by . This book was released on 1956 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: The wing-body interference theory of NACA TN 2677 applied to symmetrical wings in combination with quasi-cylindrical bodies permits the direct calculation of pressure-distribution changes produced by body shape changes. This theory is used to determine the relative magnitued of the wave-drag reduction produced by changes in cylinder cross-sectional area and that produced changes in cross-sectional shape (without change in area). The body distortion is expressed as a Fourier series, and an integral equation is derived for the body shape for minimum drag for each Fourier component. Thus the wave-drag reductions for the various Fourier harmonics are independent and additive.
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.
Download or read book The Theory of Induced Lift and Minimum Induced Drag of Nonplanar Lifting Systems written by Clarence D. Cone and published by . This book was released on 1962 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction -- Symbols -- Fundamental theoretical considerations -- The principle of vorticity attenuation -- The effective aspect ratio of nonplanar lifting systems -- Determination of the span loading distribution for minimum induced drag -- Solutions for the effective aspect ratio of optimally loaded arcs -- Solutions for more complex systems -- The induced lift of nonplanar systems -- Practical application considerations -- Concluding remarks -- References.
Download or read book The Lift and Minimum Induced Drag of a Wing Near the Ground written by P. de Haller and published by . This book was released on 1937 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Note written by and published by . This book was released on 1956 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1949 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wing fuselage Interference Tail Buffeting and Air Flow about the Tail of a Low wing Monoplane written by A. M. Rothrock and published by . This book was released on 1934 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the NASA Industry University General Aviation Drag Reduction Workshop written by Jan Roskam and published by . This book was released on 1984 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
