| Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress |
19 Oct 2012 |
67 pages |
| Authors:
Ronald O'Rourke; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
 | Department of Defense (DOD) development work on high-energy military lasers, which has been underway for decades, has reached the point where lasers capable of countering certain surface and air targets at ranges of about a mile could be made ready for installation on Navy surface ships over the next few years. More powerful shipboard lasers, which could become ready for installation in subsequent years, could provide Navy surface ships with ... |
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| Analysis of High Energy Laser Weapon Employment from a Navy Ship |
Sep 2012 |
87 pages |
| Authors:
Ching N Ang; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF SYSTEMS ENGINEERING
|
| This paper analyzes the employability of laser weapons on a Navy Littoral Combat Ship (LCS) class ship to counter small and fast boat threats. A general model of laser weapons is established to identify the attributes that characterize the laser weapon system. Quantitative values of each attribute are identified and compared for four laser weapon systems that are currently under development by the Navy to determine their potential for employment ... |
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| Leading Edge. Volume 7, Issue 4 |
Jan 2012 |
103 pages |
| Authors:
NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The Leading Edge magazine is produced by the Naval Surface Warfare Center, Dahlgren, Virginia. The purpose of the publication is to showcase technical excellence across the Warfare Centers and promote a broader awareness of the breadth and depth of knowledge and support available to the Navy and DoD. Topics discussed are: directed energy weapons, acquisition, warfare management, technology, modeling and assessment, microwaves, high power, high energy lasers, and nonlethal capabilities. ... |
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| Leading Edge. Volume 7, Issue Number 4, 2012 |
Jan 2012 |
103 pages |
| Authors:
NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The Leading Edge magazine is produced by the Naval Surface Warfare Center, Dahlgren, Virginia. The purpose of the publication is to showcase technical excellence across the Warfare Centers and promote a broader awareness of the breadth and depth of knowledge and support available to the Navy and DoD. In this issue of The Leading Edge magazine, you will trace the rich history of directed-energy work at Dahlgren, gain insight into ... |
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| Hull, Mechanical & Electrical (HM &E) Roadmap: Revolutionizing Naval Warfare and Achieving Energy Security |
Jan 2012 |
12 pages |
| Authors:
Thomas W Martin; Weston L Gray; Jeffrey M Voth; NAVAL SEA SYSTEMS COMMAND WASHINGTON DC
|
| The United States Navy faces the challenge of meeting increasing electrical power demands for advanced sensors and weapons while reducing vulnerability associated with a dependence on foreign sources of petroleum. As the technological sophistication of ballistic and anti-ship cruise missiles increases and their proliferation expands, the fielding of enhanced sensor and weapon system capabilities is required. |
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| History of Laser Weapon Research |
Jan 2012 |
11 pages |
| Authors:
Melissa Olson; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The idea of using light as a weapon can be traced back to Hippocrates, commander of the Greek forces in 212 B.C. His forces supposedly set fire to the sails of the Roman fleet by focusing sunlight with mirrors. Weapons systems based on lasers and ray guns, long a staple of science fiction, have captured the imagination of people everywhere. But with steady progress toward the development of lasers in ... |
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| Laser Weapon System (LAWS) Adjunct to the Close-In Weapon System (CIWS) |
Jan 2012 |
9 pages |
| Authors:
Robin Staton; Robert Pawlak; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The Naval Sea Systems Command (NAVSEA) established the Navy Directed Energy Weapons Program Office in January 2002 and subsequently chartered the Directed Energy and Electric Weapon Systems Program Office (PMS 405) in July 2004. Its mission is to change the way the Navy fights in the 21st century by transitioning directed energy and electric weapon technology, providing the warfighter with additional tools to fight today's and tomorrow's wars. In support ... |
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| The Acquisition Challenge Associated with Directed-Energy RDT&E |
Jan 2012 |
7 pages |
| Authors:
Mike Kotzian; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The way in which DoD identifies needs and subsequently develops, tests, procures, and sustains weapon systems has evolved over time. Today's acquisition foundation can be traced back to the Packard Commission report in 1986, where many of this report's recommendations became part of the Goldwater-Nichols DoD Reorganization Act of 1986. This evolution continued along three tracks: (1) Requirements moving from threat-based to capability-based, (2) The resource allocation system adding execution ... |
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| The Basics of Electric Weapons and Pulsed-Power Technologies |
Jan 2012 |
9 pages |
| Authors:
Stuart Moran; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Most conventional weapons rely on chemical energy (explosives) as their destruction mechanism, either to explode on target, like bombs, or to create kinetic energy, like a bullet. Electric weapons are different. Electric weapons use stored electrical energy, rather than explosives, to attack or destroy the target. Electric weapons generally fall into two categories: directed-energy weapons (DEWs) and electromagnetic (EM) launchers. DEWs send energy, instead of matter, toward a target, and ... |
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| Active Denial Array |
Jan 2012 |
5 pages |
| Authors:
Randy Woods; Matthew Ketner; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Active Denial Technology (ADT) -- which encompasses the use of millimeter waves as a directed-energy, nonlethal, counterpersonnel weapon -- has the potential to provide an important new escalation-of-force capability to U.S. operating forces. ADT projects a focused beam of 95-GHz millimeter waves to induce an intolerable heating sensation on an adversary s skin, repelling the individual with minimal risk of injury. More than a decade of research has established the ... |
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| Directed Energy in the Military Environment |
Jan 2012 |
5 pages |
| Authors:
Leedjia Svec; Jeremy Beer; Dave Freeman; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The military operates in the land, air, and maritime environments. In each of these environments, lasers and laser devices are increasingly being seen and used in a variety of ways. Accordingly, the military must protect itself and civilians from the potentially dangerous effects of lasers and other directed-energy devices. Lasers are being used on the ground to determine the intentions of people who approach checkpoints and to dissuade aircraft from ... |
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| Solid Modeling of Directed-Energy Systems |
Jan 2012 |
7 pages |
| Authors:
Joseph F Sharrow; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Not long ago, around the mid-1980s, development of most new mechanical systems such as automobiles, consumer products, and military devices was performed manually on a drafting table or drawing board. Engineers used them to prepare layouts or 2-dimensional sketches of what they were designing. They then would take these layouts to a draftsman, who would create drawings of each part in the device. The drawings would subsequently be sent to ... |
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| A Fundamental Key to Next-Generation Directed-Energy Systems |
Jan 2012 |
7 pages |
| Authors:
NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Naval Surface Warfare Center, Dahlgren Division (NSWCDD), is meeting the demanding requirements of next-generation Directed-Energy (DE) systems with Class-E radiofrequency (RF) transmitter switch-mode amplifiers designed to operate at ultrahigh efficiency, greater than 90 percent. Having discovered the key to next-generation DE systems, researchers at NSWCDD are focusing on the urgent need to counter-improvised explosive device (IED) systems with small, lightweight, highly efficient transmitters that use switch-mode amplifiers. Considering the multiplicity ... |
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| Directed Energy Using High-Power Microwave Technology |
Jan 2012 |
5 pages |
| Authors:
Jacob Walker; Matthew McQuage; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The Directed Energy Warfare Office (DEWO) and Directed Energy Division at the Naval Surface Warfare Center, Dahlgren Division (NSWCDD), merge past research and data with continuous innovation in the field of high-power microwave(s) (HPM) to address the critical need for nonlethal, nonkinetic weapons. HPM weapons can be described as nonkinetic devices that radiate electromagnetic energy in the radio frequency (RF) or microwave spectrum. They are designed to disrupt, deny, degrade, ... |
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| Laser Counter Rocket, Artillery, and Mortar (C-RAM) Efforts |
Jan 2012 |
5 pages |
| Authors:
Michael Libeau; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Mortars and rockets are common weapons confronting U.S. troops abroad. Insurgents fire the inexpensive projectiles into populated areas, intending to kill or injure service members and to inflict physical damage. While kinetic solutions like guns and missile interceptors are used to counter rockets and mortars, laser counter rocket, artillery, and mortar (C-RAM) systems present a promising solution to counter these challenging threats in the near future. Scientists and engineers at ... |
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| Naval Directed-Energy Weapons - No Longer a Future Weapon Concept |
Jan 2012 |
7 pages |
| Authors:
David C Stoudt; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| Directed-energy weapon (DEW) technologies typically take the form of high- energy lasers (HELs), high-power microwaves (HPMs), and charged-particle beams. This article focuses on the first two technology areas, as they have reached the point of being ready for operational testing and evaluation, and in some cases, operational use on the battlefield. DEWs have been popularized in science-fiction writings for over a hundred years. The Department of Defense (DoD) has been ... |
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| Multifrequency Radio-Frequency (RF) Vehicle Stopper |
Jan 2012 |
7 pages |
| Authors:
Stephen A Merryman; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The widespread use of vehicle-borne improvised explosive devices (VBIEDs) in Iraq and Afghanistan has resulted in large numbers of military and civilian personnel being killed or injured. Consequently, the Joint Non-Lethal Weapons Directorate's (JNLWD) top priority is to identify, investigate, and develop technologies and capabilities to nonlethally stop both vehicles and vessels outside of minimum keep-out ranges (i.e., ranges where the rules of engagement would dictate the use of lethal ... |
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| High-Power Electrical Vehicle-Stopping Systems |
Jan 2012 |
5 pages |
| Authors:
Jordan Chaparro; Melanie Everton; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The military needs devices that can safely and reliably stop or arrest vehicles. The primary concern is security at entry control points and vehicle check points. In such scenarios, it is desirable to be able to stop unauthorized vehicles at predefined standoff ranges to protect personnel, equipment, and critical infrastructure. Both the military and civilian law enforcement agencies face similar issues with chase scenarios, where concerns over bringing an offending ... |
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| Nonlethal Small-Vessel Stopping with High-Power Microwave Technology |
Jan 2012 |
5 pages |
| Authors:
Jacob Walker; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The employment of small vessels to attack merchant ships and other seafaring units has emerged as a significant threat to international navigation and safe operations on the high seas. Along with swarm tactics, small vessels have been known to carry improvised explosive devices, help smuggle terrorists and weapons, and serve as attack platforms on the water for larger weapons. While kinetic solutions serve as the decisive option, alternative solutions that ... |
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| Historical Overview of Directed-Energy Work at Dahlgren |
Jan 2012 |
15 pages |
| Authors:
Stuart Moran; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| In 1962, the United States set off a megaton nuclear weapon 250 miles above the Pacific. The blast caused a large imbalance of electrons in the upper atmosphere that interacted with the Earth's magnetic field to create oscillating electric fields over a large area of the Pacific. These fields were strong enough to damage electronics in Hawaii, a thousand miles away, and clearly demonstrated the effects of an electromagnetic pulse ... |
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| Statement of Operational Requirements (SOR): Guidance for Creating an SOR for Less Lethal Weapons |
Dec 2011 |
64 pages |
| Authors:
Donna Wood; DEFENCE RESEARCH AND DEVELOPMENT CANADA OTTAWA (ONTARIO) CENTRE FOR SECURITY SCIENCE
|
| In recent years, Canadian law enforcement has attracted increased public interest in police use of force in addition to the methods by which Less Lethal Weapons (LLWs) are tested and received approval for use. One of the objectives of the Conducted Energy Weapons Strategic Initiative (CEWSI) project is to develop a LLW approval process that could be applied to emerging less lethal technologies. The identification of requirements represents the first ... |
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| Tritium |
Nov 2011 |
40 pages |
| Authors:
D McMorrow; MITRE CORP MCLEAN VA
|
| Tritium breeding is an essential component of potential future GWE sources of electrical energy based on nuclear fusion. Such reactors require kg quantities of tritium per year of operation which must be bred as part of the overall reactor cycle. Traditionally, tritium is assumed to be bred from neutrons involved in fusion energy-production processes of the particular type of reactor using a lithium (Li) blanket or related alloys such as ... |
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| Toward the Development of a Canadian Less Lethal Weapon Approval Process: A Study of Contemporary Process Models |
Oct 2011 |
72 pages |
| Authors:
Len Goodman; Donna Wood; DEFENCE RESEARCH AND DEVELOPMENT CANADA OTTAWA (ONTARIO) CENTRE FOR SECURITY SCIENCE
|
| One of the objectives of the Conducted Energy Weapons Strategic Initiative (CEWSI) project is to develop a Canadian approval process that could be applied to emerging less lethal technologies. A contract was let with Alcea Technologies to survey a variety of approval processes with the objective of identifying common elements that could be applied to the Canadian less lethal weapons approval process. The contractor identified the stakeholders, roles and responsibilities, ... |
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| Study of Varying Boundary Layer Height on Turret Flow Structures |
JUN 2011 |
119 pages |
| Authors:
Renato Jelic; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF AERONAUTICS AND ASTRONAUTICS
|
| The Air Force Institute of Technology and the Air Force Research Labs are investigating flows over turrets which are commonly encountered in directed energy integrations with air vehicles. In this work, the computational study was performed using the NASA developed time-marching finite volume code OVERFLOW 2.2 to analyze the effect of boundary layer height on symmetrical and non-symmetrical turret geometries. The effects of aerodynamics yield to the aberration of the ... |
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| Directed Energy Beam Jitter Mitigation Using the Line-of-Sight Reference Frame |
10 May 2011 |
139 pages |
| Authors:
Nicholas C Dunn; NAVAL ACADEMY ANNAPOLIS MD
|
| Directed energy weapons will dramatically increase naval capability by offering extreme precision, scalable power, speed-of-light engagement, and a nearly limitless magazine. Precise beam control is essential for maximizing the energy on target and damaging the target structure. Directed energy weapon systems operating in a maritime combat environment, however, will be mounted on dynamic platforms that are subject to jitter-inducing mechanical vibrations. Jitter is any deviation of the beam from its ... |
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| Aero-Optical Investigation of a Pod Directed Energy System |
28 Feb 2010 |
33 pages |
| Authors:
Eric J Jumper; R M Rennie; NOTRE DAME UNIV IN DEPT OF AEROSPACE AND MECHANICAL ENGINEERING
|
| This report covers the work performed under ONR Grant number N00014-07-1-0291, entitled Aero-Optical Investigation of a Pod Directed Energy System. As described herein, the initial effort investigated approaches to using passive flow control to mitigate the presence of shocks over the exit pupil of a relatively large aperture laser beam projected from an underbody pod for an F/A-18 aircraft up to flight Mach numbers of Mach 0.8, and still provide ... |
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| Directed-energy Models for Distributed, Synthetic Environments |
Jan 2010 |
13 pages |
| Authors:
J Sorroche; AIR FORCE DISTRIBUTED MISSION OPERATIONS CENTER KIRTLAND AFB NM
|
| Directed Energy (DE) weapons and weapons effects are not accurately modeled in a distributed simulation environment. The Distributed Interactive Simulation (DIS), and High Level Architecture protocols were created when DE weapons were conceptual or in the initial development stages. IEEE 1278.1a is currently being updated by the Simulation Interoperability Standards Organization (SISO) DIS Product Development Group (PDG). The DE Tiger team, part of the DIS PDG, designed two new DIS ... |
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| Adaptive Facet Reflection Modeling |
2010 |
8 pages |
| Authors:
Albert Bailey; Edward Early; Paul Kennedy; Robert J. Thomas; NORTHROP GRUMMAN SAN ANTONIO TX
|
| Calculating the reflected irradiances produced by a specularly reflecting object at many observation points is computationally intensive, the total computational load proportional to the product of the number of facets times the number of observation points. In order to capture specular glints at all observation points, it is necessary to finely discretize the surface of the object into a large number of facets. This can result in a massive number ... |
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| High Average Current Electron Guns for High-Power FELs |
09 Dec 2009 |
43 pages |
| Authors:
Phillip Sprangle; Joseph Penano; Bahman Hafizi; Daniel Gordon; Steven Gold; Antonio Ting; Chad Mitchell; NAVAL RESEARCH LAB WASHINGTON DC
|
| High average power FELs require high average current electron injectors capable of generating high quality, short duration electron bunches with a repetition rate equal to the frequency of the rf linac. In this paper, we propose, analyze and simulate an rf-gated, gridded thermionic electron gun for use in high average power FELs. In the proposed configuration, the rf-gated grid is modulated at the fundamental and 3rd harmonic of the linac ... |
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| Free Electron Laser Stability Effects and Design of an Electrostatic Cathode Test Cell |
Dec 2009 |
104 pages |
| Authors:
Edmonson; Robert L III; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Developing the Free Electron Laser (FEL) as a weapon is of high interest to the United States Navy. This thesis aims to gain insight, through simulation of generic configurations of an oscillator and amplifier FEL, into the performance of an FEL and the effects of electron beam misalignments. It then compares simulation results to an existing experiment, and explores similarities and differences. Additionally, a new cathode test cell is designed. ... |
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| A HEL Testbed for High Accuracy Beam Pointing and Control |
01 Jul 2009 |
79 pages |
| Authors:
Dojong Kim; Duane Frist; Jae J Kim; Brij Agrawal; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| High energy laser (HEL) weapons are some of most challenging military applications in the future battle fields since the speed of light delivery enables the war fighter to engage very distant targets immediately. The issues of the technology on the HEL system include various types of high energy laser devices, beam control systems, atmospheric propagation, and target lethality. Among them, precision pointing of laser beam and high-bandwidth rejection of jitters ... |
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| The Active Denial System. A Revolutionary, Non-lethal Weapon for Today's Battlefield |
Jun-2009 |
17 pages |
| Authors:
Susan LeVine; NATIONAL DEFENSE UNIV WASHINGTON DC CENTER FOR TECHNOLOGY AND NATIONAL SECURITY POLICY
|
| Since the end of the Cold War, U.S. Armed Forces have participated in many operations that combine military operations against combatants in situations where the civilian population is at risk. Such complex operations, as they are now called, necessarily place troops in close contact with local civilians?and sometimes in confrontations that lead to violence. Use of force against civilians can create local tensions that undermine efforts to rebuild a society ... |
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| Critical Directed Energy Test and Evaluation Infrastructure Shortfalls: Results of the Directed Energy Test and Evaluation Capability Tri-Service Study Update |
Jun 2009 |
8 pages |
| Authors:
Minh Vuong; ARMY SIMULATION TRAINING AND INSTRUMENTATION COMMAND ORLANDO FL
|
| Directed energy (DE) weapons are here. Groundbreaking work continues every day on high power microwaves and high energy lasers. These weapon systems offer several advantages over traditional weapons: speed-of-light delivery, deep magazines, graduated effects, and minimal collateral damage. DE weapon systems also offer new challenges including energy termination, energy reflections, electromagnetic interference, and many others. The United States cannot safely field DE weapon systems until sufficient developmental, operational, and live ... |
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| Directed Energy Weapons - Are We There Yet? The Future of DEW Systems and Barriers to Success |
May-2009 |
21 pages |
| Authors:
Elihu Zimet; Christopher Mann; NATIONAL DEFENSE UNIV WASHINGTON DC CENTER FOR TECHNOLOGY AND NATIONAL SECURITY POLICY
|
| The purpose of this paper is to examine the barriers to deployment listed above and suggest a strategy for an initial deployment that addresses these issues. This strategy will focus on current high-priority threats against which DEW would provide the best alternative for the military. |
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| Operational Defenses through Weather Control in 2030 |
Apr 2009 |
44 pages |
| Authors:
Michael C Boger; AIR COMMAND AND STAFF COLL MAXWELL AFB AL
|
| The United States needs to incorporate the defense against directed energy weapons with the same intensity used developing anti-ballistic missile defenses. One of the major drawbacks to optical or directed energy systems is the inability to penetrate clouds or dense fog. Advances in technology are beginning to bring weather phenomena under our control. Greatly increased computing power and micronized delivery systems will allow us to create specific perturbations in local ... |
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| E3 Testing of Directed Energy Systems: A Challenging Future |
04-Mar-2009 |
26 pages |
| Authors:
Lyndell R Brown; TYBRIN CORP EDWARDS AFB CA
|
| Efforts to put lasers and other Directed Energy Weapons (DEW) in the hands of warfighters continue. Concepts in development, for High Energy Laser (HEL) or High Power Microwave (HPM) in the future may include Airborne Tactical Laser and Airborne Active Denial System. Network-Centric Operations (NCO) expand as systems are 'linked' and tested. Directed Energy Weapons will be integrated on Net-ready platforms. Compatibility testing and susceptibility to electromagnetic radiation is required. ... |
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| Directed Energy Weapon System for Ballistic Missile Defense |
15 Feb 2009 |
61 pages |
| Authors:
David M Mason; AIR WAR COLL MAXWELL AFB AL
|
| Ballistic missiles carrying nuclear weapons and the proliferation of nuclear weapons and related technologies represent two of the gravest threats to the security of the United States and its service members deployed overseas. The threat environment the U.S. will be confronted with will be fundamentally different from the Cold War period and the period characterized by today's global fight against terrorism. The international environment shaped by rogue states, the withdrawal ... |
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| Air and Space Power Journal. Volume 23, Number 4, Winter 2009 |
Jan 2009 |
133 pages |
| Authors:
Lori Katowich; AIR UNIV MAXWELL AFB AL AIRPOWER JOURNAL
|
| The Air and Space Power Journal, Air Force Recurring Publication 10-1, published quarterly, is the professional journal of the United States Air Force. It is designed to serve as an open forum for the presentation and stimulation of innovative thinking on military doctrine, strategy, force structure, readiness, and other matters of national defense. |
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| The WSTIAC Quarterly. Volume 9, Number 2, 2009 |
Jan 2009 |
17 pages |
| Authors:
Benjamin D Craig; WEAPON SYSTEMS TECHNOLOGY INFORMATION ANALYSIS CENTER ALEXANDRIA VA
|
| This issue of the WSTIAC Quarterly features an article on Ar-Xe Laser: The Path to a Robust All-Electric Shipboard Directed Energy Weapon and Turbomachinery for Man-Portable Military Power Application. Included the WSTIAC Calendar of Events and the Directors Corner. Details on several Training Courses sponsored by WSTIAC are also included in this issue. |
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| Ablation and Plasma Formation During Directed Energy Testing |
31-Dec-2008 |
11 pages |
| Authors:
Iain D Boyd; MICHIGAN UNIV ANN ARBOR
|
| Continuous radio-wave telemetry is required during planned tests of directed-energy weapons systems in order to characterize in situ the effects of laser irradiation on different target materials. Unfortunately, the incident radiation can cause disruption of the radio signal during the directed-energy testing. Several phenomena associated with directed-energy impact can lead to communication path losses, such as ablation, charged particle emission, charring, and chemical changes in the target materials. Directed-energy impact ... |
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| Ar-Xe Laser: The Path to a Robust, All-Electric Shipboard Directed Energy Weapon |
18-Dec-2008 |
21 pages |
| Authors:
J D Sethian; J P Apruzese; J L Giuliani; M F Wolford; NAVAL RESEARCH LAB WASHINGTON DC
|
| High Energy Lasers (HELs) long ago demonstrated their potential to destroy missiles in flight, a capability which could significantly reduce the threat to the fleet arising from anti-ship cruise missiles. However, no HELs have been deployed to date. Until recently, there was no laser that had credible prospects of meeting the Navy's requirements for safety, power, size, beam quality, electrical drive, and atmospheric propagation. The electron beam pumped Ar-Xe laser ... |
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| Atmospheric Scintillation Effects on Electromagnetic Weapons |
Dec-2008 |
4 pages |
| Authors:
R W McMillan; ARMY SPACE AND MISSILE DEFENSE COMMAND REDSTONE ARSENAL AL
|
| Atmospheric turbulence has been shown to cause measurable effects on the propagation of electromagnetic radiation. These effects are significant at both visible/IR and microwave and millimeter wavelengths even though they vary as f7/6, where f is frequency. The contribution of the humidity structure function CQ 2 makes these effects significant for many applications in most wavebands of interest. In this paper we present results of calculations of the effects of ... |
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| Weapon Systems Technology Information Analysis Center |
NOV 2008 |
22 pages |
| Authors:
John Weed; ALION SCIENCE AND TECHNOLOGY ALEXANDRIA VA
|
| WSTIAC Mission - Mission: Provide DoD and user communities with timely and authoritative information and technical expertise on key weapon systems related R&D concepts, results, trends, applications and processes, and assessment of the international R&D technology with a focus on conventional and directed energy weapons science, technology, and acquisition. Acquire, digest, analyze, evaluate, synthesize, store, publish and disseminate worldwide weapon systems STI and engineering data Systems and subsystems from satellites ... |
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| Airborne Tactical Laser (ATL) Feasibility for Gunship Operations (Briefing charts) |
08 Oct 2008 |
28 pages |
| Authors:
Hsiao-Hua K Burke; Michael J Sailor; AIR FORCE SCIENTIFIC ADVISORY BOARD (AIR FORCE) PATRICK AFB FL
|
|
| Rhesus Monkey Aversion to 94-GHz Facial Exposure |
01-Sep-2008 |
21 pages |
| Authors:
NAVAL HEALTH RESEARCH CENTER BROOKS CITY-BASE TX BROOKS DETACHMENT
|
| Millimeter wave (MMW) source technology has advanced significantly allowing the use of 94-GHz MMWs as a non-lethal weapon. The Air Force Research Laboratory has developed such a non-lethal weapon known as the Active Denial System (ADS). The purpose of this study was to determine the threshold for behavioral aversion to 94-GHz MMW exposure in rhesus monkeys. Aversion was defined simply as an eye blink, head turn, or raising the hand ... |
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| Thermal Interaction of Contact Lens Eyewear and 94 GHz Ocular Exposures |
Sep 2008 |
23 pages |
| Authors:
John D'Andrea; Carrie C Crane; Donald J Hatcher; Donald Marchello; John Ziriax; Richard Peterson; Steve Chalfin; NAVAL HEALTH RESEARCH CENTER BROOKS CITY-BASE TX DIRECTED ENERGY BIOEFFECTS LAB
|
| The objective of this study was to evaluate contact lens eyewear interaction with the 94 GHz MMW beam. This study was designed to investigate the thermal relationships between contact lens eyewear and 94 GHz exposures. Enucleated swine eyes were evaluated using a modified Miyake-Apple technique which allowed IR images of the interior of the cornea to be taken while the front of the cornea was irradiated with and without contact ... |
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| High-Power Fiber Lasers for Directed-Energy Applications |
Jan 2008 |
12 pages |
| Authors:
P Sprangle; A Ting; J Penano; R Fischer; B Hafizi; NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV
|
| High-power fiber lasers can be incoherently combined to form the basis of a high-energy laser system for directed-energy applications. These applications include tactical directed energy and power beaming. Incoherent combining of fiber lasers has a number of advantages over other laser beam combining methods. The incoherently combined laser system is relatively simple, highly efficient, compact, robust, low-maintenance, and reliable. In this article, we characterize the atmospheric propagation of incoherently combined, ... |
|
| Improving Satellite Protection with Nanotechnology |
DEC 2007 |
23 pages |
| Authors:
Joseph Huntington; AIR WAR COLL MAXWELL AFB AL CENTER FOR STRATEGY AND TECHNOLOGY
|
| While the United States has enjoyed an historic advantage in space and the U.S. Air Force (USAF) has enjoyed the luxury of operating relatively unimpeded in this medium, the nation has become vulnerable to threats that could damage or disable its vital satellite constellations. This paper examines the threat to satellites posed by ground-based directed energy weapons and the state of satellite-related nanotechnology research and development (R&D) to demonstrate the ... |
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| Metal Hydride Heat Storage Technology for Directed Energy Weapon Systems |
16-Nov-2007 |
10 pages |
| Authors:
Chanwoo Park; Xudong Tang; Kwang J Kim; Joseph Gottschlich; Quinn Leland; ADVANCED COOLING TECHNOLOGIES INC LANCASTER PA
|
| Directed Energy Weapon (DEW) systems in a pulse operation mode dissipate excessively large, transient waste heat because of their inherent inefficiencies. The heat storage system can store such a pulsed heat load not relying on oversized systems and dissipate the stored heat over time after the pulse operation. A compressor-driven metal hydride heat storage system was developed for efficient, compact heat storage and dissipation of the transient heat from the ... |
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| Adaptive Filtering and System Identification |
03 OCT 2007 |
9 pages |
| Authors:
Steve Gibson; CALIFORNIA UNIV LOS ANGELES DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
|
| The primary objectives of this project are to develop new real time algorithms for adaptive filtering, prediction, and system identification with improved efficiency and numerical stability for the large numbers of channels and high filter orders typically required in Air Force applications such as adaptive optics, laser communications, target tracking and image processing. The research supports research and development at the Air Force Research Laboratory on directed energy weapons and ... |
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Directed Energy Weapons
