Download or read book Critical Velocity of Electromagnetic Rail Gun in Response to Projectile Movement written by and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model is developed to investigate file dynamic response of an electromagnetic rail gun induced by a moving magnetic pressure during launch of projectiles. As the projectile velocity approaches a critical value, resonance can occur and cause high-amplitude stress and strain in the rail at the instant and location of the projectile's passage. In this study, governing equations of a railgun under dynamic-loading conditions are derived that illustrate a lower-bound critical velocity in terms of material properties, geometry, and barrel cross section. A study is then performed to show the effect of these parameters on the critical velocity of the barrel. Accordingly, the model that accounts for projectile velocity and gun construction can be used to guide barrel design.

Download or read book Critical Velocity of Electromagnetic Rail Gun in Response to Projectile Movement written by Jerome T. Tzeng and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model is developed to investigate file dynamic response of an electromagnetic rail gun induced by a moving magnetic pressure during launch of projectiles. As the projectile velocity approaches a critical value, resonance can occur and cause high-amplitude stress and strain in the rail at the instant and location of the projectile's passage. In this study, governing equations of a railgun under dynamic-loading conditions are derived that illustrate a lower-bound critical velocity in terms of material properties, geometry, and barrel cross section. A study is then performed to show the effect of these parameters on the critical velocity of the barrel. Accordingly, the model that accounts for projectile velocity and gun construction can be used to guide barrel design.

Download or read book Critical Velocity of Electromagnetic Gun in Response to Projectile Movement written by Jerome T. Tzeng and published by . This book was released on 2001 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model is developed to investigate the dynamic response of an electromagnetic (EM) rail gun, induced by a moving magnetic pressure during launch of projectiles. As the projectile velocity approaches a critical value, resonance can occur and cause high amplitude stress and strain in the rail at the instant and location of projectile's passage. In this study, governing equations of a railgun under dynamic loading conditions are derived that illustrate a lower-bound critical velocity in terms of material properties, geometry, and barrel cross-section. That represents the worst case or a lower bound solution for the structure under a dynamic loading condition. A study is then performed to show the effect of these parameters on the critical velocity of the barrel. Accordingly, the model that accounts for projectile velocity and gun construction can be used to guide and improve barrel design.

Download or read book American Society for Composites American Society for Testing And Materials Committee D30 written by Erian Armanios and published by DEStech Publications, Inc. This book was released on 2004-10 with total page 1464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the recent developments in the fundamental understanding of composites; important information for researchers and composite scientists.

Download or read book Armor written by and published by . This book was released on 2009 with total page 56 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 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book You Pay We Slay written by William Alan Webb and published by Hit World Press. This book was released on 2022-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Want somebody dead? If you do, the solution's easy. Hire LifeEnders, Inc. You pay. We slay.Whether you know it or not-whether you believe it or not-the world is a dangerous place full of criminals, terrorists, monsters, sorcerers, extra-terrestrials, inter-dimensional predators, and embarrassing relatives. And, for the right price, they can all go away.Twenty years ago, LifeEnders became the first legal corporation of assassins to operate on U.S. soil. Today, LEI has a hit man in every state and many foreign nations. Getting rid of the scammer who catfished Grandma only requires the requisite credit line, and porch thieves now think twice if a security camera might identify them. You pay; we slay. No questions asked.But it's not just about putting a target in the cross-hairs. Sometimes the job requires 'Special Skills,' and that costs extra. If a giant orange rhinoceros appears in the sky? Call LEI and let the Special Activities Division handle it?and don't forget your credit card.The first Hit World anthology brings together an all-star lineup of amazing authors guaranteed to keep you awake past bedtime.Sorry. (Not Sorry)

Download or read book Civilizations written by Wallace Horta and published by Talentos da Literatura Brasileira. This book was released on 2020-09-18 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book in the Civilizations Trilogy broke new ground by introducing the protagonists of a civilization like never before. Prepare yourself for a completely new, completely original First Contact. Astronauts Susan and Michael approach an unidentified space object, which developed a close-to-the-Sun trajectory and then moved itself to the far side of our Moon. Upon making contact, Susan goes through a series of relevant events from another planet, crossing from one era to another in company of Michael, who was acting strangely, as if he was part of all of that. Centuries later, Susan no longer feels like a foreigner among that people. In company of Electrons and aboard the Eclipsed Star, she crosses the colossal Continuum Warpers, playing a role in shaping the fate of the galaxy. That is what has happened to Fount, and it is done that way because only in the clarity of whole truth exists the possibility of accepting each other within the limits of what each civilization truly can be.

Download or read book Hearing on National Defense Authorization Act for Fiscal Year 2009 and Oversight of Previously Authorized Programs Before the Committee on Armed Services House of Representatives One Hundred Tenth Congress Second Session written by United States. Congress. House. Committee on Armed Services. Subcommittee on Terrorism, Unconventional Threats, and Capabilities and published by . This book was released on 2009 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hypervelocity Gouging Impacts written by John D. Cinnamon and published by Progress in Astronautics and Aeronautics Series. This book was released on 2009 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: When materials interact at hypervelocityon the order of Mach 8.5 and aboveunexpected results can occur. This book addresses the effects of hypervelocity impact, summarizing past and present research efforts as well as setting out the theoretical foundation for understanding material interactions at such velocity. It focuses on research conducted at the Holloman Air Force Base High Speed Test Track (HHSTT), which is working toward a test vehicle speed above Mach 10. Researchers have found that as the sleds speed has increased to Mach 8.5, a material interaction has developed which causes gouging in the rails and the sleds shoeswhich can lead to catastrophic failure.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1990 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heavy Wheel Vehicle Mechanic written by United States. Department of the Army and published by . This book was released on 1980 with total page 52 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 ATF National Firearms Act Handbook written by U.S. Department of Justice and published by Lulu.com. This book was released on 2019-03-17 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is primarily for the use of persons in the business of importing, manufacturing, and dealing in firearms defined by the National Firearms Act (NFA) or persons intending to go into an NFA firearms business. It should also be helpful to collectors of NFA firearms and other persons having questions about the application of the NFA. This publication is not a law book. Rather, it is intended as a ?user friendly? reference book enabling the user to quickly find answers to questions concerning the NFA. Nevertheless, it should also be useful to attorneys seeking basic information about the NFA and how the law has been interpreted by ATF. The book's Table of Contents will be helpful to the user in locating needed information. Although the principal focus of the handbook is the NFA, the book necessarily covers provisions of the Gun Control Act of 1968 and the Arms Export Control Act impacting NFA firearms businesses and collectors.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.

Download or read book Field Artillery Manual Cannon Gunnery written by Department of the Army and published by . This book was released on 2017-08-19 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Training Circular (TC) 3-09.81, "Field Artillery Manual Cannon Gunnery," sets forth the doctrine pertaining to the employment of artillery fires. It explains all aspects of the manual cannon gunnery problem and presents a practical application of the science of ballistics. It includes step-by-step instructions for manually solving the gunnery problem which can be applied within the framework of decisive action or unified land operations. It is applicable to any Army personnel at the battalion or battery responsible to delivered field artillery fires. The principal audience for ATP 3-09.42 is all members of the Profession of Arms. This includes field artillery Soldiers and combined arms chain of command field and company grade officers, middle-grade and senior noncommissioned officers (NCO), and battalion and squadron command groups and staffs. This manual also provides guidance for division and corps leaders and staffs in training for and employment of the BCT in decisive action. This publication may also be used by other Army organizations to assist in their planning for support of battalions. This manual builds on the collective knowledge and experience gained through recent operations, numerous exercises, and the deliberate process of informed reasoning. It is rooted in time-tested principles and fundamentals, while accommodating new technologies and diverse threats to national security.