Stability and Control, 3rd Edition, published by Wiley. Email address for updates. Journal of Spacecraft and Rockets 4 9, However, the final answers to these questions are not provided. Write a customer review. Fluid dynamic model of a downburst S Zhu, B Etkin.

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The cover was printed by Hamilton Printing Company. The paper in this book was manufactured by a mill whose forest management programs include sustained yield harvesting of its timberlands. Sustained yield harvesting principles ensure that the number of trees cut each year does not exceed the amount of new growth.

All rights reserved. Published simultaneously in Canada. Reproduction or translation of any part of this work beyond that permitted by Sections and of the United States Copyright Act without the permission of the copyright owner is unlawful. Includes bibliographical references p.

ISBN cloth : alk. Stability of airplanes. Reid, Lloyd D. It was well received both by students and practicing aeronautical en- gineers of that era. The pace of development in aerospace engineering during the decade that followed was extremely rapid, and this was reflected in the subject of flight mechanics.

The first author therefore saw the need at the time for a more ad- vanced treatment of the subject that included the reality of the round rotating Earth and the real unsteady atmosphere, and hypersonic flight, and that reflected the explo- sive growth in computing power that was then taking place and has not yet ended!

The result was the volume entitled Dynamics of Atmospheric Flight. That treat- ment made no concessions to the needs of undergraduate students, but attempted rather to portray the state of the art of flight mechanics as it was then. To meet the needs of students, a second edition of the book was later published in It is that volume that we have revised in the present edition, although in a number of de- tails we have preferred the treatment, and used it instead.

We have retained the same philosophy as in the two preceding editions. That is, we have emphasized basic principles rooted in the physics offlight, essential analyti- cal techniques, and typical stability and control realities. We continue to believe, as stated in the preface to the edition, that this is the preparation that students need to become aeronautical engineers who can face new and challenging situations with confidence.

This edition improves on its predecessors in several ways. It uses a real jet trans- port the Boeing for many numerical examples and includes exercises for stu- dents to work in most chapters. We learned from a survey of teachers of this subject that the latter was a sine qua non. Working out these exercises is an important part of acquiring skill in the subject.

Moreover, some details in the theoretical development have been moved to the exercises, and it is good practice in analysis for the students to do these. Students taking a course in this subject are assumed to have a good background in mathematics, mechanics, and aerodynamics, typical of a modem university course in aeronautical or aerospace engineering. Consequently, most of this basic material has been moved to appendices so as not to interrupt the flow of the text.

The content of Chapters 1 through 3 is very similar to that of the previous edi- tion. Chapter 4, however, dealing with the equations of motion, contains two very significant changes. We have not presented the nondimensional equations of motion, but have left them in dimensional form to conform with current practice, and we have expressed the equations in the state vector form now commonly used. Chapter 5, on stability derivatives, is almost unchanged from the second edition, and Chapters 6 and 7 dealing with stability and open loop response, respectively, differ from their predecessors mainly in the use of the B as example and in the use of the dimen- sional equations.

Chapter 8, on the other hand, on closed loop control, is very much expanded and almost entirely new. This is consistent with the much enhanced impor- tance of automatic flight control systems in modern airplanes. We believe that the vii viii Preface student who works through this chapter and does the exercises will have a good grasp of the basics of this subject.

The appendices of aerodynamic data have been retained as useful material for teachers and students. The same caveats apply as formerly. The data are not intended for design, but only to illustrate orders of magnitude and trends.

They are provided to give students and teachers ready access to some data to use in problems and projects. We acknowledge with thanks the assistance of our colleague, Dr.

On a personal note-as the first author is now in the 1 lth year of his retirement, this work would not have been undertaken had Lloyd Reid not agreed to collaborate in the task, and if Maya Etkin had not encouraged her husband to take it on and sup- ported him in carrying it out. In turn, the second author, having used the edition as a student with the first author as supervisor , the text as a researcher, and the text as a.


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