Download or read book Elastic Strength of Propellers written by Paris Genalis and published by . This book was released on 1970 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of displacements and stresses in a propeller blade under the influence of a hydrodynamic pressure load is investigated. Also a simplified approach to the free, undamped vibration of the blade is suggested. The finite element method of analysis is used to analyze the blade as a shell or as a combination of a three dimensional solid and a shell. For the vibration problem, the complete blade was idealized by shell elements only. Constant stress tetrahedra and rectangular prism elements were used for the analysis of the three dimensional solids. A combination of both kinds of elements was found to cause no algorithmic difficulties or inaccuracies in the results and to provide the flexibility to approximate irregular boundaries by the tetrahedron. The stiffness of the shell element was obtained by the superposition of the stiffness of the plane stress element and the fully compatible plate bending element. The results using only the shell element were good both for the static and the dynamic problems. It was felt that with comparable meshes the shell element was more powerful than either of the three dimensional elements. (Author).
Download or read book Elastic Strength of Propellers written by Paris Genalis and published by . This book was released on 1970 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of displacements and stresses in a propeller blade under the influence of a hydrodynamic pressure load is investigated. Also a simplified approach to the free, undamped vibration of the blade is suggested. The finite element method of analysis is used to analyze the blade as a shell or as a combination of a three dimensional solid and a shell. For the vibration problem, the complete blade was idealized by shell elements only. Constant stress tetrahedra and rectangular prism elements were used for the analysis of the three dimensional solids. A combination of both kinds of elements was found to cause no algorithmic difficulties or inaccuracies in the results and to provide the flexibility to approximate irregular boundaries by the tetrahedron. The stiffness of the shell element was obtained by the superposition of the stiffness of the plane stress element and the fully compatible plate bending element. The results using only the shell element were good both for the static and the dynamic problems. It was felt that with comparable meshes the shell element was more powerful than either of the three dimensional elements. (Author).
Download or read book Elastic Strength of Propellers an Analysis by Matrix Methods written by Paris Genalis and published by . This book was released on 1970 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Propellers and Propulsion written by John Carlton and published by Butterworth-Heinemann. This book was released on 2012-10-30 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early development of the screw propeller. Propeller geometry. The propeller environment. The ship wake field, propeller performance characteristics.
Download or read book The Air Propeller Its Strength and Correct Shape written by H. Dietsius and published by . This book was released on 1923 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airplanes and airships, at the present day, often have engine installations totalling several hundred horsepower, the output from which must be transformed into thrust through the medium of one or more propellers; so that, not infrequently, a single propeller must transmit 250 to 500 HP. The peripheral speed of the propeller blades, in such cases, often exceeds 200 meters (656 feet) per second and the load due to centrifugal force may then amount to several tons. It is extremely desirable, therefore, that the strength of propellers should be calculated and not determined entirely by the workmen who are employed in their manufacture.
Download or read book Ship Resistance and Propulsion written by Anthony F. Molland and published by Cambridge University Press. This book was released on 2011-08-08 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by experts in the ship design field, this book provides a comprehensive approach to evaluating ship resistance and propulsion.
Download or read book Aircraft Propeller Design written by Fred Ernest Weick and published by . This book was released on 1930 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: En lærebog om flypropeller.
Download or read book Marine Propellers and Propulsion written by John Carlton and published by Butterworth-Heinemann. This book was released on 2018-11-30 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Propellers and Propulsion, Fourth Edition, offers comprehensive, cutting edge coverage to equip marine engineers, naval architects or anyone involved in propulsion and hydrodynamics with essential job knowledge. Propulsion technology is a complex, multidisciplinary topic with design, construction, operational and research implications. Drawing on experience from a long and varied career in consulting, research, design and technical investigation, John Carlton examines hydrodynamic theory, materials and mechanical considerations, and design, operation and performance. Connecting essential theory to practical problems in design, analysis and operational efficiency, the book is an invaluable resource, packed with hard-won insights, detailed specifications and data. - Features comprehensive coverage of marine propellers, fully updated and revised, with new chapters on propulsion in ice and high speed propellers - Includes enhanced content on full-scale trials, propeller materials, propeller blade vibration, operational problems and much more - Synthesizes otherwise disparate material on the theory and practice of propulsion technology from the past 40 years' development, including the latest developments in improving efficiency - Written by a leading expert on propeller technology, essential for students, marine engineers and naval architects involved in propulsion and hydrodynamics
Download or read book Static Stresses on Wide bladed Propellers written by Justin H. McCarthy and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Static stresses were obtained in laboratory experiments for a destroyer propeller, having aerofoil blade sections, and a super-cavitating propeller, having wedge-shaped blade sections, using specially constructed pressure chambers that allowed the blade faces to be loaded under air pressure. A new method for applying beam theory is presented that closely predicts the magnitude and distribution of radial stresses on the destroyer propeller blade. For the supercavitating propeller, neither the proposed beam-theory method nor a particular computerized-shell analysis can be considered entirely satisfactory for prediction of blade stresses. (Author).
Download or read book Airplane Propeller Principles written by Wilbur Clifton Nelson and published by . This book was released on 1944 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Propellers written by Cecil Hobart Peabody and published by . This book was released on 1912 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strength of Screw Propellers written by and published by . This book was released on 1975 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is an attempt to systematize problems related to substantiation and development of practical methods for general strength calculation of ship propellers. Two approaches are presented for determining the strength characteristics of screw propellers: the first is based on taking into consideration static loads on the propeller blade only, while the second takes into account variable (cyclic) forces acting on the screw propeller.
Download or read book The Screw Propeller written by Albert Edward Seaton and published by . This book was released on 1909 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aircraft Propeller Handbook written by United States. Munitions Board. Aircraft Committee. Subcommittee on Air Force-Navy-Civil Aircraft Design Criteria and published by . This book was released on 1956 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Added Masses of Ship Structures written by Alexandr I. Korotkin and published by Springer Science & Business Media. This book was released on 2008-12-12 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of added body masses that interact with fluid is necessary in various research and applied tasks of hydro- and aeromechanics: steady and unsteady motion of rigid bodies, total vibration of bodies in fluid, local vibration of the external plating of different structures. This reference book contains data on added masses of ships and various ship and marine engineering structures. Also theoretical and experimental methods for determining added masses of these objects are described. A major part of the material is presented in the format of final formulas and plots which are ready for practical use. The book summarises all key material that was published in both Russian and English-language literature. This volume is intended for technical specialists of shipbuilding and related industries. The author is one of the leading Russian experts in the area of ship hydrodynamics.
Download or read book Aerodynamics of the Propeller written by Fritz Weinig and published by . This book was released on 1948 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Speed Propellers written by Claus F. L. Kruppa and published by . This book was released on 1968 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
