Download or read book Terrain Constraints on the Design Testing and Deployment of the Gator Mine written by Jerry R. Lundien and published by . This book was released on 1976 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests of the GATOR mine in various terrains within the United States indicated that a non-uniform sensitivity existed in its AP seismic sensor. It was demonstrated that soil characteristics can affect sensor sensitivity, causing the mine to detonate when the target is beyond warhead lethal range, or causing it not to detonate at all. Using computer models that were validated through field studies, this report attempts to predict the expected sensitivity of the GATOR AP seismic sensor. A terrain matrix, made up of elements describing surface and subsurface terrain layers that affect target-induced seismic signal generation and propagation, was developed to define environmental parameter variation. Computer model signals were generated using the matrix results for input to the GATOR mine logic. The results were utilized to define mine-performance changes over the environmental parameter ranges. Terrain property combinations which have major effects on source-to-ground energy coupling and seismic signal propagation were evaluated using microseismic generation and propagation models. The models were validated to verify if they could realistically predict, with sufficient sensitivity and reliability, time domain signals versus terrain characteristics.
Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1980 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Impact and Penetration of the Gator Mine in Earth Materials written by Jerry R. Lundien and published by . This book was released on 1976 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a study of the penetration characteristics of an air-delivered, antitank/antivehicle and antipersonnel mine (Gator mine system) as related to variations in mine impact velocity and attitude and changes in soil strength conditions and vegetation. A theoretical study, a field study, and a mapping study were pursued to estimate worldwide mine penetration performance. The theoretical results are presented in terms of relations of impact velocity (specific velocity ranges) versus maximum depth of penetration and maximum deceleration for various terrain materials. The field study was conducted using an air gun, and the results are presented in terms of relations of impact velocity, depth of penetration, impact angle, impact attitude, and terrain material strength characteristics. In the mapping study the results of the theoretical and field studies were used to estimate the probability of successful emplacement (i. e., in a position suitable for activation) of the mines in any region of the world. The results obtained from the theoretical study show that, for the normal range of impact velocity, penetration is excessive in clay and sandy clay soils, intermediate in sands, and acceptable in frozen ground and rock. The results obtained from the field study showed that penetration was excessive in lean and fat clay soils when the mine impact angle was 90 degrees. Penetration performance becomes more satisfactory as the impact angle decreases. The results of the mapping study show that a large portion of the world has surface soils too soft to allow acceptable emplacement when the impact angle is 90 degrees. Reducing this angle to 45 degrees will allow acceptable emplacement in many regions.
Download or read book PSTIAC Report written by Waterways Experiment Station (U.S.) Pavements and Soil Trafficability Information Analysis Center and published by . This book was released on 1977-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notices of Changes in Classification Distribution and Availability written by and published by . This book was released on 1978 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of the Acoustical Society of America written by and published by . This book was released on 1977 with total page 1334 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 199? with total page 1044 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 1978-08 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Army Logistician written by and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mine Countermine Operations written by Department of the Army and published by Createspace Independent Pub. This book was released on 2013-06-08 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The guidance provided focuses on individual skills of emplacing and removing mines, team and squad tasks, platoon and company organization and panning, and battalion/task force organization and coordination for successful obstacle reduction and breaching operations.
Download or read book Proceedings of the IEEE 1987 National Aerospace and Electronics Conference NAECON 1987 written by and published by . This book was released on 1987 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Point written by Gregory Fontenot and published by . This book was released on 2005 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Den amerikanske hærs første officielle historiske beretning om operationerne i den anden Irakiske Krig, "Operation Iraqi Freedom", (OIF). Fra forberedelserne, mobiliseringen, forlægningen af enhederne til indsættelsen af disse i kampene ved Talil og As Samawah, An Najaf og de afsluttende kampe ved Bagdad. Foruden en detaljeret gennemgang af de enkelte kampenheder(Order of Battle), beskrives og analyseres udviklingen i anvendte våben og doktriner fra den første til den anden Golf Krig.
Download or read book The Army Air Forces in World War II Men and planes written by and published by . This book was released on 1948 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Airpower Advantage written by Diane T. Putney and published by CreateSpace. This book was released on 2015-02-02 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: American air power is a dominant force in today's world. Its ascendancy, evolving in the half century since the end of World War II, became evident during the first Gulf War. Although a great deal has been written about military operations in Desert Shield and Desert Storm, this deeply researched volume by Dr. Diane Putney probes the little-known story of how the Gulf War air campaign plan came to fruition. Based on archival documentation and interviews with USAF planners, this work takes the reader into the planning cells where the difficult work of building an air campaign plan was accomplished on an around-the-clock basis. The tension among air planners is palpable as Dr. Putney traces the incremental progress and friction along the way. The author places the complexities of the planning process within the con- text of coalition objectives. All the major players are here: President George H. W. Bush, General H. Norman Schwarzkopf, General Colin Powell, General Chuck Horner, and Secretary of Defense Richard Cheney. The air planning process generated much debate and friction, but resulted in great success - a 43-day conflict with minimum casualties. Dr. Putney's rendering of this behind-the-scenes evolution of the planning process, in its complexity and even suspense, provides a fascinating window into how wars are planned and fought today and what might be the implications for the future.
Download or read book Metal Detector Handbook for Humanitarian Demining written by Dieter Guelle and published by . This book was released on 2003-01-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Impact of School Infrastructure on Learning written by Peter Barrett and published by World Bank Publications. This book was released on 2019-02-04 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The Impact of School Infrastructure on Learning: A Synthesis of the Evidence provides an excellent literature review of the resources that explore the areas of focus for improved student learning, particularly the aspiration for “accessible, well-built, child-centered, synergetic and fully realized learning environments.†? Written in a style which is both clear and accessible, it is a practical reference for senior government officials and professionals involved in the planning and design of educational facilities, as well as for educators and school leaders. --Yuri Belfali, Head of Division, Early Childhood and Schools, OECD Directorate for Education and Skills This is an important and welcome addition to the surprisingly small, evidence base on the impacts of school infrastructure given the capital investment involved. It will provide policy makers, practitioners, and those who are about to commission a new build with an important and comprehensive point of reference. The emphasis on safe and healthy spaces for teaching and learning is particularly welcome. --Harry Daniels, Professor of Education, Department of Education, Oxford University, UK This report offers a useful library of recent research to support the, connection between facility quality and student outcomes. At the same time, it also points to the unmet need for research to provide verifiable and reliable information on this connection. With such evidence, decisionmakers will be better positioned to accurately balance the allocation of limited resources among the multiple competing dimensions of school policy, including the construction and maintenance of the school facility. --David Lever, K-12 Facility Planner, Former Executive Director of the Interagency Committee on School Construction, Maryland Many planners and designers are seeking a succinct body of research defining both the issues surrounding the global planning of facilities as well as the educational outcomes based on the quality of the space provided. The authors have finally brought that body of evidence together in this well-structured report. The case for better educational facilities is clearly defined and resources are succinctly identified to stimulate the dialogue to come. We should all join this conversation to further the process of globally enhancing learning-environment quality! --David Schrader, AIA, Educational Facility Planner and Designer, Former Chairman of the Board of Directors, Association for Learning Environments (A4LE)
Download or read book Airpower against an Army Challenge and Response in CENTAF s Duel with the Republican Guard written by William F. Andrews and published by DIANE Publishing. This book was released on with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: For nearly two decades the United States Air Force (USAF) oriented the bulk of its thinking, acquisition, planning, and training on the threat of a Soviet blitzkrieg across the inter German border. The Air Force fielded a powerful conventional arm well rehearsed in the tactics required to operate over a central European battlefield. Then, in a matter of days, the 1990 invasion of Kuwait altered key assumptions that had been developed over the previous decade and a half. The USAF faced a different foe employing a different military doctrine in an unexpected environment. Instead of disrupting a fast paced land offensive, the combat wings of the United States Central Command Air Forces (CENTAF) were ordered to attack a large, well fortified, and dispersed Iraqi ground force. The heart of that ground force was the Republican Guard Forces Command (RGFC). CENTAF's mission dictated the need to develop an unfamiliar repertoire of tactics and procedures to meet theater objectives. How effectively did CENTAF adjust air operations against the Republican Guard to the changing realities of combat? Answering that question is central to this study, and the answer resides in evaluation of the innovations developed by CENTAF to improve its operational and tactical performance against the Republican Guard. Effectiveness and timeliness are the primary criteria used for evaluating innovations.
