Download or read book Free Electron and Solid State Lasers Development for Naval Directed Energy written by Aristeidis Kalfoutzos and published by . This book was released on 2002-12-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: A MW level FEL is being designed with a short a Rayleigh length resonator to increase the spot size at the mirrors and to avoid mirror damage. In this thesis, it is found that it is desirable to focus the electron beam to improve the FEL extraction efficiency. Three-dimensional simulations show that the focused electron beam increases the extraction efficiency far beyond the desired value of 0.7%. It is also found in this thesis that shifting the electron beam off- axis less than 0.3 mm, the efficiency remains above the required value. The proposed FEL design uses high power, short optical pulses whose spectrum% may cover many absorption lines. The absorbed laser energy can heat up the air resulting in defocusing the laser beam (thermal blooming). This thesis shows that thermal blooming is not an issue for a moderate clear atmosphere when the stagnation zone size remains less than 10 m. A transitional step for the development of a MW level FEL weapon is the proposed 100 kW upgrade of the Thomas Jefferson National Accelerator Facility's FEL. It has also been shown in this thesis that the use of a step-taper undulator slightly improves the performance of the FEL. Finally, the potential of various high average power solid-state laser designs are reviewed.
Download or read book Navy Lasers Railgun and Gun Launched Guided Projectile written by Congressional Service and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy is developing three new ship-based weapons that could improve the ability of Navy surface ships to defend themselves against missiles, unmanned aerial vehicles (UAVs), and surface craft: the Surface Navy Laser Weapon System (SNLWS), the electromagnetic railgun (EMRG), and the gun-launched guided projectile (GLGP), previously known as the hypervelocity projectile (HVP). The Navy refers to the initial (i.e., Increment 1) version of SNLWS as HELIOS, an acronym meaning high-energy laser with integrated optical dazzler and surveillance. EMRG could additionally provide the Navy with a new naval surface fire support (NSFS) weapon for attacking land targets in support of Marines or other friendly ground forces ashore. The Department of Defense is exploring the potential for using GLGP across multiple U.S. military services. Any one of these three new weapons, if successfully developed and deployed, might be regarded as a "game changer" for defending Navy surface ships against enemy missiles and UAVs. If two or three of them are successfully developed and deployed, the result might be considered not just a game changer, but a revolution. Rarely has the Navy had so many potential new types of surface-ship air-defense weapons simultaneously available for development and potential deployment. Although the Navy in recent years has made considerable progress in developing technologies for these new weapons, a number of significant development challenges remain. Overcoming these challenges will require additional development work, and ultimate success in overcoming them is not guaranteed. The issue for Congress is whether to approve, reject, or modify the Navy's funding requests and proposed acquisition strategies for these three potential new weapons. Potential oversight questions for Congress include the following: Using currently available air-defense weapons, how well could Navy surface ships defend themselves in a combat scenario against an adversary such as China that has or could have large numbers of missiles and UAVs? How would this situation change if Navy surface ships in coming years were equipped with SNLWS, EMRG, GLGP, or some combination of these systems? How significant are the remaining development challenges for SNLWS, EMRG, and GLGP? Are current schedules for developing SNLWS, EMRG, and GLGP appropriate in relation to remaining development challenges and projected improvements in enemy missiles and UAVs? When does the Navy anticipate issuing roadmaps detailing its plans for procuring and installing production versions of SNLWS, EMRG, and GLGP on specific Navy ships by specific dates? Will the kinds of surface ships that the Navy plans to procure in coming years have sufficient space, weight, electrical power, and cooling capability to take full advantage of SNLWS and EMRG? What changes, if any, would need to be made in Navy plans for procuring large surface combatants (i.e., destroyers and cruisers) or other Navy ships to take full advantage of SNLWS and EMRGs? Given the Navy's interest in HPV, how committed is the Navy to completing the development of EMRG and eventually deploying EMRGs on Navy ships? Are the funding line items for SNLWS, EMRG, and GLDP sufficiently visible for supporting congressional oversight?
Download or read book Navy Shipboard Lasers for Surface Air and Missile Defense Background and Issues for Congress written by and published by DIANE Publishing. This book was released on with total page 53 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 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of Defense Appropriations for Fiscal Year 2006 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Defense and published by . This book was released on 2005 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of Defense Appropriations written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Department of Defense and published by . This book was released on 2005 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Signal written by and published by . This book was released on 2003 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coherent Madness Effective Defense Against Covert Warfare written by Mukazo Mukazo Vunda and published by Lulu.com. This book was released on 2008-09-24 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Virtually banned in the west. Reserved for posthumous critique. Buy it while I am still alive)Covert warfare to eliminate threats or research electronic, chemical and biological agents on unwitting, hapless civilians is becoming more widespread than ever before. A tax money supported network of dedicated criminals for whom waging covert warfare is a way of life is on the increase, their job to punish by torture and eliminate people who pose a threat to those in positions of power. Intelligence agencies, there to protect citizens from internal and external foes, the judiciary, as well as the police forces, are heavily involved, giving the nod, protection, the best of their know-how and technology to the activity and those involved.
Download or read book Hearing on National Defense Authorization Act for Fiscal Year 2014 and Oversight of Previously Authorized Programs Before the Committee on Armed Services House of Representatives One Hundred Thirteenth Congress First Session written by United States. Congress. House. Committee on Armed Services. Subcommittee on Seapower and Projection Forces and published by . This book was released on 2013 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defense Science and Technology 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 2006 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearing on National Defense Authorization Act for Fiscal Year 2008 and Oversight of Previously Authorized Programs Before the Committee on Armed Services House of Representatives One Hundred Tenth Congress First 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 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Homeland Security and the Coast Guard written by Arthur C. Walsh and published by . This book was released on 2003 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Coast Guard was effectively positioned to accomplish its missions and functions before the September 2001 terrorist attacks. The terrorist attacks reshaped the United States national security strategy, and this caused the Coast Guard to reprioritize its mission requirements elevating Homeland Security to be on par with the Coast Guard's number one priority, search and rescue operations. To effectively carry out the Homeland Security mission, the Coast Guard must leverage existing and developing technologies. These technologies will improve efficiency across the full spectrum of Coast Guard missions. While these technologies are not cheap; costs for research, development, and application can be greatly reduced by partnering with other agencies. To leverage these technologies to improve Homeland Security effectiveness, a process for evaluating and infusing emerging technology within the Coast Guard must be developed. This process must then be institutionalized within the Coast Guard's corporate structure.
Download or read book Seapower written by Geoffrey Till and published by Routledge. This book was released on 2009-03-06 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised, updated and expanded new edition of Geoffrey Till's acclaimed textbook provides an invaluable guide for anyone interested in the changing and crucial role of seapower in the twenty-first century.
Download or read book U S Asia Pacific Strategic Considerations Related to People s Liberation Army Naval Forces Modernization written by United States. Congress. House. Committee on Armed Services. Subcommittee on Seapower and Projection Forces and published by . This book was released on 2014 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Directed Energy and Fleet Defense Implications for Naval Warfare written by and published by DIANE Publishing. This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of directed energy weapons into twenty-first century naval forces has the potential to change naval tactics as fundamentally as the transition from sail to steam. Recent advances in directed energy technologies have made the development of both high-energy laser and high-power microwave weapons technically feasible. This study examines the potential adaptation of such weapons for the defense of naval forces. This study considers options for using directed energy systems on naval vessels in the context of the U.S. maritime strategy and emerging threats in international politics. The framework for this study is an integrated system of microwave devices, high-energy lasers, and surface-to-air missiles which are evaluated in terms of their ability to enhance anti-ship cruise missile defense, tactical air defense, and fast patrol boat defense. This study also examines collateral capabilities, such as non-lethal defensive measures and countersurveillance operations. The global proliferation of increasingly sophisticated weapons and the expanding demands placed on its ever-smaller navy require the United States to reassess its current approach to fleet operations. This study concludes that directed energy technology has made sufficient progress to warrant the development of sea-based weapons systems for deployment in the first two decades of the next century. For operational and technical reasons, a Nimitz class aircraft carrier may be the preferred platform for the initial implementation of directed energy weapons. If successful, the robust self-defense capability provided by directed energy weapons will permit a fundamental shift in carrier battle group operations from a massed, attrition oriented defense to a more dynamic, dispersed offense.
Download or read book Defense Science Board Task Force on High Energy Laser Weapon Systems Applications written by and published by DIANE Publishing. This book was released on with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Defense Authorization Act for Fiscal Year 2000 written by United States. Congress. House. Committee on Armed Services and published by . This book was released on 1999 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
