Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 422
Book Description
Technical Note
Author: Technical Note - National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for AeronauticsPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 438
Book Description
Publications
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 416
Book Description
Effect of Pneumatic De-icers and Ice Formations on Aerodynamic Characteristics of an Airfoil
Author: Dean T. BowdenPublisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 710
Book Description
Measurements of lift, drag, and pitching moment of an NACA 0011 airfoil were made in icing using two types of pneumatic de-icers, one having spanwise inflatable tubes and the other having chordwise tubes. Ice remaining after inflation of the spanwise-tube de-icer increased airfoil section drag 7 to 37 percent for 0 to 4.6 degrees angle of attack over the ranges of airspeed, total air temperature, liquid-water content, and cycle times covered. This drag increase became constant after a few de-icing cycles. Drag increases due to ice remaining on the chordwise-tube de-icer were similar to those for the spanwise-tube de-icer. Minimum airfoil drag in icing (averaged over a de-icing cycle) was usually obtained with a short (about i min) de-icing cycle.
Publications of the National Bureau of Standards
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category : Washington (D.C.)
Languages : en
Pages : 450
Book Description
National Bureau of Standards Report
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 802
Book Description
History of Nonlinear Oscillations Theory in France (1880-1940)
Author: Jean-Marc GinouxPublisher: Springer
ISBN: 3319552392
Category : Technology & Engineering
Languages : en
Pages : 402
Book Description
This book reveals the French scientific contribution to the mathematical theory of nonlinear oscillations and its development. The work offers a critical examination of sources with a focus on the twentieth century, especially the period between the wars. Readers will see that, contrary to what is often written, France's role has been significant. Important contributions were made through both the work of French scholars from within diverse disciplines (mathematicians, physicists, engineers), and through the geographical crossroads that France provided to scientific communication at the time. This study includes an examination of the period before the First World War which is vital to understanding the work of the later period. By examining literature sources such as periodicals on the topic of electricity from that era, the author has unearthed a very important text by Henri Poincaré, dating from 1908. In this work Poincaré applied the concept of limit cycle (which he had introduced in 1882 through his own works) to study the stability of the oscillations of a device for radio engineering. The “discovery” of this text means that the classical perspective of the historiography of this mathematical theory must be modified. Credit was hitherto attributed to the Russian mathematician Andronov, from correspondence dating to 1929. In the newly discovered Poincaré text there appears to be a strong interaction between science and technology or, more precisely, between mathematical analysis and radio engineering. This feature is one of the main components of the process of developing the theory of nonlinear oscillations. Indeed it is a feature of many of the texts referred to in these chapters, as they trace the significant developments to which France contributed. Scholars in the fields of the history of mathematics and the history of science, and anyone with an interest in the philosophical underpinnings of science will find this a particularly engaging account of scientific discovery and scholarly communication from an era full of exciting developments.
Nonlinear Oscillations in Physical Systems
Author: Chihiro HayashiPublisher: Princeton University Press
ISBN: 1400852870
Category : Science
Languages : en
Pages : 405
Book Description
This book offers a fundamental explanation of nonlinear oscillations in physical systems. Originally intended for electrical engineers, it remains an important reference for the increasing numbers of researchers studying nonlinear phenomena in physics, chemical engineering, biology, medicine, and other fields. Originally published in 1986. 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.
Projects and Publications of the National Applied Mathematics Laboratories
Author: Waves And Stability In Continuous Media - Proceedings Of The Vii Conference
Author: Salvatore RioneroPublisher: World Scientific
ISBN: 9814550450
Category :
Languages : en
Pages : 449
Book Description
This volume presents an up-to-date overview of some of the most important topics in waves and stability in continuous media. The topics are: Discontinuity and Shock Waves; Linear and Non-Linear Stability in Fluid Dynamics; Kinetic Theories and Comparison with Continuum Models; Propagation and Non-Equilibrium Thermodynamics; and Numerical Applications.