The Theory Of Propellers
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The Theory Of Propellers
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Author : Theodore Theodorsen
language : en
Publisher:
Release Date : 1944
The Theory Of Propellers written by Theodore Theodorsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Aerodynamics categories.
Summary: Values of the circulation function have been obtained for dual-rotating propellers. Numerical values are given for four-, eight-, and twelve-blade dual-rotating propellers and for advance ratios from 2 to about 6. In addition, the circulation function has been determined for single-rotating propellers for the higher values of the advance ratio. The mass coefficient, another quantity of significance in propeller theory, has been introduced. This mass coefficient, which is actually the mean value of the circulation coefficient, expresses the effective area of the column of the medium acted upon by the propeller in terms of the propeller-disk area. Values of the mass coefficient, which have been determined directly by special measurements and also by integration of the circulation function, are given for the four-, eight-, and twelve-blade dual-rotating propellers. The mass coefficient has also been determined for several cases of single-rotating propellers, partly for the purpose of comparing such experimental values with theoretical results in the known range of low advance ratios and partly to extend the results to include a range of high advance ratios. The effect of stationary countervanes on the mass coefficient has also been determined for several cases of practical interest.
The Theory Of Propellers
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Author : Theodore Theodorsen
language : en
Publisher:
Release Date : 1944
The Theory Of Propellers written by Theodore Theodorsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Aerodynamics categories.
Summary: As the conditions of the ultimate wake are of concern both theoretically and practically, the magnitude of the slipstream contraction has been calculated. It will be noted that the contraction in a representative case is of the order of only 1 percent of the propeller diameter. In consequence, all calculations need involve only first-order effects. Curves and tables are given for the contraction coefficient of two-blade and four-blade propellers for various values of the advance ratio; the contraction coefficient is defined as the contraction in the diameter of the wake helix in terms of the wake diameter at infinity. The contour lines of the wake helix are also shown at four values of the advance ratio in comparison with the contour lines for an infinite number of blades.
The Theory Of Propellers
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Author : Theodore Theodorsen
language : en
Publisher:
Release Date : 1944
The Theory Of Propellers written by Theodore Theodorsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Aerodynamics categories.
Summary: A technical method is given for calculating the axial interference velocity of a propeller. The method involves the use of certain weight functions P, Q, and F. Numerical values for the weight functions are given for two-blade, three-blade, and six-blade propellers.
The Air Propeller
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Author : Frederick B. 1868 Bedell
language : en
Publisher: Wentworth Press
Release Date : 2016-08-24
The Air Propeller written by Frederick B. 1868 Bedell and has been published by Wentworth Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-24 with History categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Marine Propellers And Propulsion
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Author : John Carlton
language : en
Publisher: Elsevier
Release Date : 2011-04-01
Marine Propellers And Propulsion written by John Carlton and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-01 with Transportation categories.
Although the propeller lies submerged out of sight, it is a complex component in both the hydrodynamic and structural sense. This book fulfils the need for a comprehensive and cutting edge volume that brings together a great range of knowledge on propulsion technology, a multi-disciplinary and international subject. The book comprises three main sections covering hydrodynamics; materials and mechanical considerations; and design, operation and performance. The discussion relates theory to practical problems of design, analysis and operational economy, and is supported by extensive design information, operational detail and tabulated data. Fully updated and revised to cover the latest advances in the field, the new edition now also includes four new chapters on azimuthing and podded propulsors, propeller-rudder interaction, high-speed propellers, and propeller-ice interaction. · The most complete book available on marine propellers, fully updated and revised, with four new chapters on azimuthing and podded propulsors, propeller-rudder interaction, high-speed propellers, and propeller-ice interaction· A valuable reference for marine engineers and naval architects gathering together the subject of propulsion technology, in both theory and practice, over the last forty years · Written by a leading expert on propeller technology, essential for students of propulsion and hydrodynamics, complete with online worked examples
Report Naval Ship Research And Development Center
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Author : David W. Taylor Naval Ship Research and Development Center
language : en
Publisher:
Release Date : 1961
Report Naval Ship Research And Development Center written by David W. Taylor Naval Ship Research and Development Center and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Shipbuilding categories.
Propeller Theory
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Author : Curtiss-Wright Corporation
language : en
Publisher:
Release Date : 1944
Propeller Theory written by Curtiss-Wright Corporation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Propellers, Aerial categories.
Hydrodynamics Of Ship Propellers
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Author : John P. Breslin
language : en
Publisher: Cambridge University Press
Release Date : 1994
Hydrodynamics Of Ship Propellers written by John P. Breslin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.
Technical introduction to ship propeller hydrodynamics, for researchers in ocean technology, naval architecture, mechanical engineering.
Aircraft Propeller Design
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Author : Fred Ernest Weick
language : en
Publisher:
Release Date : 1930
Aircraft Propeller Design written by Fred Ernest Weick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1930 with Propellers, Aerial categories.
En lærebog om flypropeller.
Propeller Aerodynamics
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Author : Frank Hitchens
language : en
Publisher: Andrews UK Limited
Release Date : 2015-05-11
Propeller Aerodynamics written by Frank Hitchens and has been published by Andrews UK Limited this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-11 with Transportation categories.
Classical aerodynamics is a compulsory study subject for pilots at all levels of experience. Propeller Aerodynamics is a subset of this fascinating subject. Propellers have their unique aerodynamic terminology, forces and handling requirements, knowledge of which all pilots must be aware of to safely handle the aircraft they are flying. Incorrect propeller handling can cause damage to the aircraft and reduce performance efficiency. Most aerodynamic text books only give a brief view of propeller aerodynamics; however this book Propeller Aerodynamics delves more deeply into this subject. The book covers the history and operation of aircraft propellers, prop pitch, thrust, efficiency, aircraft stability, prop forces, constant-speed units and more. This is all essential reading for the pilot progressing to more advanced high-performance aircraft.