Download or read book An Approximate Analysis of Balloting Motion of Railgun Projectiles written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final of three reports dealing with the in-bore balloting motion of a projectile fired from an electromagnetic railgun. Knowledge of projectile in-bore motion is important to its design and the design of the railgun. It is a complicated problem since many parameters are involved and it is not easy to determine the interacting relationships between them. To make the problem easier to understand it was analyzed on several levels. Beginning from the basic simple model which computed only the axial motion, more complicated models were introduced in upper levels that included the more significant lateral forces and gun tube vibration effects. This report deals with the approximate analysis of balloting motion. This model considers the effects of the propulsion force, the friction force of the projectile package (projectile and armature), air resistance, gravity, the elastic forces, and the projectile/ barrel clearance. To simplify the modeling, a plane motion configuration is assumed. Though the projectile is moving with a varying yaw angle, the axes of the barrel and the projectile package, and the projectile center of gravity are always considered in a plane containing the centerlines of the rails. Equations of motion are derived and solved. A sample computation is performed and the results plotted to give a clearer understanding of projectile in-bore motion.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 576 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 1991 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International aerospace abstracts written by and published by . This book was released on 1993 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ballistics 2019 written by V. K. Saraswat and published by . This book was released on 2019-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes available original ballistics technology from around the world on a wide variety of weapons and their effects, including the design and trajectory/stability control of dozens of projectiles ranging from shells to missiles. The book's authors discuss the efficacy and development of propellants, munitions, and igniters and offer new approaches for modeling and testing. Also investigated in Volume 1 is gradient printing of energetic materials, and mechanical behavior of multiple types of explosives.Volume 2 offers research on impact and penetration data from projectile effects on surfaces ranging from natural phenomena such as water, to metallic plating and material-engineered armors. Recent advances in reactive fragments, which provide enhanced terminal effects, are presented. Detailed analysis of warhead mechanisms such as the formation and terminal effects of shaped charge jets are reported.Papers in these volumes were presented at a conference jointly organized and supported by the Aeronautical Society of India, Hyderabad Branch, India, and the International Ballistics Society.
Download or read book Proceedings of the 33rd International Instrumentation Symposium written by International Instrumentation Symposium $(33rd : 1987 : Las Vegas, NNev.) and published by . This book was released on 1987 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extending Russia written by James Dobbins and published by RAND. This book was released on 2019-04-11 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the U.S. National Defense Strategy recognizes, the United States is currently locked in a great-power competition with Russia. This report seeks to define areas where the United States can compete to its own advantage. It examines Russian vulnerabilities and anxieties; analyzes potential policy options to exploit them; and assesses the associated benefits, costs, and risks, as well as the likelihood of successful implementation.
Download or read book Investigation of the Drag of Various Axially Symmetric Nose Shapes of Fineness Ratio 3 for Mach Numbers from 1 24 to 7 4 written by C. H. Wilts and published by . This book was released on 1958 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Out Of Control written by Kevin Kelly and published by Basic Books. This book was released on 2009-04-30 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Out of Control chronicles the dawn of a new era in which the machines and systems that drive our economy are so complex and autonomous as to be indistinguishable from living things.
Download or read book Product Design and Development written by Karl T. Ulrich and published by Irwin/McGraw-Hill. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text presents a set of product development techniques aimed at bringing together the marketing, design, and manufacturing functions of the enterprise. The integrative methods facilitate problem-solving and decision-making.
Download or read book Railway Noise and Vibration written by David Thompson and published by Elsevier. This book was released on 2008-12-11 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: Railways are an environmentally friendly means of transport well suited to modern society. However, noise and vibration are key obstacles to further development of the railway networks for high-speed intercity traffic, for freight and for suburban metros and light-rail. All too often noise problems are dealt with inefficiently due to lack of understanding of the problem. This book brings together coverage of the theory of railway noise and vibration with practical applications of noise control technology at source to solve noise and vibration problems from railways. Each source of noise and vibration is described in a systematic way: rolling noise, curve squeal, bridge noise, aerodynamic noise, ground vibration and ground-borne noise, and vehicle interior noise. - Theoretical modelling approaches are introduced for each source in a tutorial fashion - Practical applications of noise control technology are presented using the theoretical models - Extensive examples of application to noise reduction techniques are included Railway Noise and Vibration is a hard-working reference and will be invaluable to all who have to deal with noise and vibration from railways, whether working in the industry or in consultancy or academic research. David Thompson is Professor of Railway Noise and Vibration at the Institute of Sound and Vibration Research, University of Southampton. He has worked in the field of railway noise since 1980, with British Rail Research in Derby, UK, and TNO Institute of Applied Physics in the Netherlands before moving to Southampton in 1996. He was responsible for developing the TWINS software for predicting rolling noise. - Discusses fully the theoretical background and practical workings of railway noise - Includes the latest research findings, brought together in one place - Forms an extended case study in the application of noise control techniques
Download or read book First Lensman written by E.E Smith and published by Lulu.com. This book was released on 2016-02-15 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enemy spacefleet arrowed toward the armored mountain-nerve center of the Galactic Patrol. The Patrol battle cruisers swerved to meet them, and a miles-long cone of pure energy ravened out at the invaders, destroying whatever it touched. But the moment before the force beam struck, thousands of tiny objects dropped from the enemy fleet and, faster than light, flashed straight at their target-each one an atom bomb powerful enough to destroy Patrol Headquarters by itself! The Galactic Patrol-and civilization itself-had seconds to live. Unless a miracle happened.... **
Download or read book India s Rise to Power in the Twentieth Century and Beyond written by S. Gordon and published by Springer. This book was released on 1994-11-13 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: `...sober and extremely well-researched book.' - Inder Malhotra, Business World `...very detailed and up-to-date account.' - Richard Newman, Times Higher Education Supplement This book examines the economic and technological basis for India's rise to power and the political factors that shape the nature of the power it will develop into. It shows that while India has concentrated on many of the scientific and technical capabilities that serve the needs of a rising power, it has not been able to achieve a balanced process of development. This imbalance feeds sub-national political discontent and undercuts the very power that India has sought to acquire, thus delaying her rise to power.
Download or read book Basic Simple Modeling of Balloting Motion of Railgun Projectiles written by and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second of three basic reports dealing with the in-bore balloting motion of a projectile launched in an electromagnetic railgun. The first report addressed axial projectile motion without cocking and was titled 'A Basic Single Model of In-bore Motion of Railgun Projectiles.' Understanding the inbore motion of a projectile is important to its design and its ability to hit a target with some effectiveness. Analysis of in-bore motion is a complicated problem since many parameters are involved and the interacting relationships between them must be determined. To make the problem easier to understand, it was analyzed on several levels beginning with the basic simple model which computed only the axial motion and followed by more complicated models in the upper analysis levels that included as many lateral forces and gun tube vibration effects as possible. This report deals with the second basic or zero level of balloting analysis. A basic simple model considering only the effect of the propulsion force, the friction force of the armature, and the clearance between the projectile and the barrel is presented. The computation of the axial projectile motion with a certain cocking angle is the goal of this analysis. Equations of motion are derived and solved. A sample computation with available data is performed and the results plotted to give a clearer understanding of balloting action.
Download or read book A Shield in Space written by Sanford Lakoff and published by University of California Press. This book was released on 2021-05-28 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1989.
Download or read book Virtual Economies written by Vili Lehdonvirta and published by MIT Press. This book was released on 2014-05-09 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the basic concepts of economics—including markets, institutions, and money—can be used to create and analyze economies based on virtual goods. In the twenty-first-century digital world, virtual goods are sold for real money. Digital game players happily pay for avatars, power-ups, and other game items. But behind every virtual sale, there is a virtual economy, simple or complex. In this book, Vili Lehdonvirta and Edward Castronova introduce the basic concepts of economics into the game developer's and game designer's toolkits. Lehdonvirta and Castronova explain how the fundamentals of economics—markets, institutions, and money—can be used to create or analyze economies based on artificially scarce virtual goods. They focus on virtual economies in digital games, but also touch on serious digital currencies such as Bitcoin as well as virtual economies that emerge in social media around points, likes, and followers. The theoretical emphasis is on elementary microeconomic theory, with some discussion of behavioral economics, macroeconomics, sociology of consumption, and other social science theories relevant to economic behavior. Topics include the rational choice model of economic decision making; information goods versus virtual goods; supply, demand, and market equilibrium; monopoly power; setting prices; and externalities. The book will enable developers and designers to create and maintain successful virtual economies, introduce social scientists and policy makers to the power of virtual economies, and provide a useful guide to economic fundamentals for students in other disciplines.
