Download or read book Generalized Three Dimensional Simulation of Ferruled Coupled Cavity Traveling Wave Tube Dispersion and Impedance Characteristics written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-31 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The frequency-phase dispersion and Pierce on-axis interaction impedance of a ferruled, coupled-cavity, traveling-wave tube (TWT), slow-wave circuit were calculated using the three-dimensional simulation code Micro-SOS. The utilization of the code to reduce costly and time-consuming experimental cold tests is demonstrated by the accuracy achieved in calculating these parameters. A generalized input file was developed so that ferruled coupled-cavity TWT slow-wave circuits of arbitrary dimensions could be easily modeled. The practicality of the generalized input file was tested by applying it to the ferruled coupled-cavity slow-wave circuit of the Hughes Aircraft Company model 961HA TWT and by comparing the results with experimental results. Maruschek, Joseph W. and Kory, Carol L. and Wilson, Jeffrey D. Glenn Research Center NASA-TP-3389, E-7977, NAS 1.60:3389 RTOP 506-72-00...
Download or read book Generalized Three dimensional Simulation of Ferruled Coupled cavity Traveling wave tube Dispersion and Impedance Characteristics written by Joseph W. Maruschek and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Simulation of Traveling Wave Tube Cold Test Characteristics Using Mafia written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-13 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-dimensional simulation code MAFIA was used to compute the cold-test parameters - frequency-phase dispersion, beam on-axis interaction impedance, and attenuation - for two types of traveling-wave tube (TWT) slow-wave circuits. The potential for this electromagnetic computer modeling code to reduce the time and cost of TWT development is demonstrated by the high degree of accuracy achieved in calculating these parameters. Generalized input files were developed for ferruled coupled-cavity and TunneLadder slow-wave circuits. These files make it easy to model circuits of arbitrary dimensions. The utility of these files was tested by applying each to a specific TWT slow-wave circuit and comparing the results with experimental data. Excellent agreement was obtained. Kory, Carol L. and Wilson, Jeffrey D. Glenn Research Center NAS3-25776...
Download or read book Three dimensional Simulation of Traveling wave Tube Cold test Characteristics Using MAFIA written by Carol L. Kory and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Simulation of Traveling Wave Tube Cold Test Characteristics Using CST MICROWAVE STUDIO written by and published by . This book was released on 2003 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994-12 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ring plane Traveling wave Tube Slow wave Circuit Design Simulations at V Band Frequencies written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 1596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Journal of Infrared and Millimeter Waves written by and published by . This book was released on 2003 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 3D Modeling Analysis and Design of a Traveling wave Tube Using a Modified Ring bar Structure with Rectangular Transmission Lines Geometry written by Sadiq Ali Alhuwaidi and published by . This book was released on 2017 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel slow-wave structure of the traveling-wave tube consisting of rings and rectangular coupled transmission lines is modeled, analyzed, and designed in the frequency range of 1.89-2.72 GHz. The dispersion and interaction impedance characteristics are investigated using High Frequency Structure Simulator, HFSS, and a power run is carried out using Finite-Difference Time-Domain (FDTD) code, VSim. The performance of the design providing a better output power, gain, bandwidth, and efficiency is compared to the conventional and existing designs by implementing cold- and hot-test simulations. In addition, an electron gun and periodic permanent magnet, PPM, is designed using EGUN code and ANSYS Maxwell, respectively. The electron beam has a beam voltage of 262 kV, beam current of 12 A, cathode emission density of 5.968 A/cm^2 , and minimum radius of 2.0 mm. The required gun parameters and magnetic field levels, including the geometrical quantities, are calculated to produce the appropriate electron flow and achieve adequate beam stability. Iterations and analysis of those quantities are provided to properly understand the procedure of the design.
Download or read book The Physics of Musical Instruments written by Neville H. Fletcher and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the history of musical instruments is nearly as old as civilisation itself, the science of acoustics is quite recent. By understanding the physical basis of how instruments are used to make music, one hopes ultimately to be able to give physical criteria to distinguish a fine instrument from a mediocre one. At that point science may be able to come to the aid of art in improving the design and performance of musical instruments. As yet, many of the subtleties in musical sounds of which instrument makers and musicians are aware remain beyond the reach of modern acoustic measurements. This book describes the results of such acoustical investigations - fascinating intellectual and practical exercises. Addressed to readers with a reasonable grasp of physics who are not put off by a little mathematics, this book discusses most of the traditional instruments currently in use in Western music. A guide for all who have an interest in music and how it is produced, as well as serving as a comprehensive reference for those undertaking research in the field.
Download or read book When the Flame Flickers written by Latha Christie and published by Wipf and Stock Publishers. This book was released on 2019-05-01 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr Christie’s book deals with the subject of marital abuse in a different and almost interactive way with readers. The mandate of this book is to help battered wives in unbearable abusive marriages to put a halt to their descent into the bottomless abyss that life has drawn them into; and realize there is a way up, out and onward, thus empowering them. Above all, the book provides the path to healing after abuse and taking charge of one’s future.
Download or read book Beyond the Boundaries of Science written by Latha Christie and published by Wipf and Stock Publishers. This book was released on 2019-03-29 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Is the origin of life a lucky roll of cosmic dice? Who is behind the origin of the universe? What do the latest scientific discoveries say about the origin of space and time? Beyond the Boundaries of Science explores the cosmic puzzles that accompany our greatest scientific advances. It suggests that there is more, beyond the reach of science--a super-intelligent Designer behind these mysteries. It takes both science and the Bible seriously, comparing the latest scientific theories with the account in Genesis, interpreted as a revelation of the sequence of our origins.
Download or read book Fiber Optics Engineering written by Mohammad Azadeh and published by Springer Science & Business Media. This book was released on 2009-08-05 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the past few decades, information technologies have been evolving at a tremendous rate, causing profound changes to our world and our ways of life. In particular, fiber optics has been playing an increasingly crucial role within the telecommunication revolution. Not only most long-distance links are fiber based, but optical fibers are increasingly approaching the individual end users, providing wide bandwidth links to support all kinds of data-intensive applications such as video, voice, and data services. As an engineering discipline, fiber optics is both fascinating and challenging. Fiber optics is an area that incorporates elements from a wide range of techno- gies including optics, microelectronics, quantum electronics, semiconductors, and networking. As a result of rapid changes in almost all of these areas, fiber optics is a fast evolving field. Therefore, the need for up-to-date texts that address this growing field from an interdisciplinary perspective persists. This book presents an overview of fiber optics from a practical, engineering perspective. Therefore, in addition to topics such as lasers, detectors, and optical fibers, several topics related to electronic circuits that generate, detect, and process the optical signals are covered. In other words, this book attempts to present fiber optics not so much in terms of a field of “optics” but more from the perspective of an engineering field within “optoelectronics.
Download or read book Dictionary of Industrial Terms written by Michael D. Holloway and published by John Wiley & Sons. This book was released on 2013-01-07 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the most comprehensive dictionary of maintenance and reliability terms ever compiled, covering the process, manufacturing, and other related industries, every major area of engineering used in industry, and more. The over 15,000 entries are all alphabetically arranged and include special features to encourage usage and understanding. They are supplemented by hundreds of figures and tables that clearly demonstrate the principles & concepts behind important process control, instrumentation, reliability, machinery, asset management, lubrication, corrosion, and much much more. With contributions by leading researchers in the field: Zaki Yamani Bin Zakaria Department, Chemical Engineering, Faculty Universiti Teknologi Malaysia, Malaysia Prof. Jelenka B. Savkovic-Stevanovic, Chemical Engineering Dept, University of Belgrade, Serbia Jim Drago, PE, Garlock an EnPro Industries family of companies, USA Robert Perez, President of Pumpcalcs, USA Luiz Alberto Verri, Independent Consultatnt, Verri Veritatis Consultoria, Brasil Matt Tones, Garlock an EnPro Industries family of companies, USA Dr. Reza Javaherdashti, formerly with Qatar University, Doha-Qatar Prof. Semra Bilgic, Faculty of Sciences, Department of Physical Chemistry, Ankara University, Turkey Dr. Mazura Jusoh , Chemical Engineering Department, Universiti Teknologi Malaysia Jayesh Ramesh Tekchandaney, Unique Mixers and Furnaces Pvt. Ltd. Dr. Henry Tan, Senior Lecturer in Safety & Reliability Engineering, and Subsea Engineering, School of Engineering, University of Aberdeen Fiddoson Fiddo, School of Engineering, University of Aberdeen Prof. Roy Johnsen, NTNU, Norway Prof. N. Sitaram , Thermal Turbomachines Laboratory, Department of Mechanical Engineering, IIT Madras, Chennai India Ghazaleh Mohammadali, IranOilGas Network Members' Services Greg Livelli, ABB Instrumentation, Warminster, Pennsylvania, USA Gas Processors Suppliers Association (GPSA)
