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Directed Energy Weapons 2/2
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  1. 1. DIRECTED-ENERGY WEAPON – CHANGING THE RULES OF WARFARE
  2. 2. INTRODUCTION • A directed-energy weapon (DEW) emits highly focused energy, transferring that energy to a target to damage it. • Potential applications of this technology include anti-personnel weapon systems, potential missile defense system, and the disabling of lightly armored vehicles such as cars, drones, jet skis, and electronic devices such as mobile phones. • The energy can come in various forms: Electromagnetic radiation, including radio frequency, microwave, lasers and masers Particles with mass, in particle-beam weapons (technically a form of micro-projectile weapon) Sound, in sonic weapons
  3. 3. OPERATIONAL ADVANTAGES Laser beams travel at the speed of light, so there is no need (except over extremely long distances) to compensate for target movement. Consequently, evading an accurately aimed laser after it has been fired is impossible. Light is only slightly affected by gravity, so that long-range projection requires little compensation. Other aspects such as wind speed can be neglected at most times, unless shooting through an absorptive matter. Lasers can change focusing configuration to provide an active area that can be much smaller or larger than projectile weaponry. Given a sufficient power source, laser weapons could essentially have limitless ammunition. Because light has a practically zero ratio of momentum to energy (exactly 1/c), lasers produce negligible recoil.
  4. 4. PROBLEMS • Existing methods of storing, conducting, transforming, and directing energy are inadequate to produce a convenient hand-held weapon. Existing lasers waste much energy as heat, requiring still-bulky cooling equipment to avoid overheating damage. • Air cooling can yield an unacceptable delay between shots. These problems, which severely limit laser weapon practicality at present, might be offset by:  Cheap, high-temperature superconductors to make the weapon more efficient.  More convenient high-volume electricity storage/generation. Part of the energy could be used to cool the device. • Chemical lasers use energy from a suitable chemical reaction instead of electricity. • Chemical oxygen iodine laser (hydrogen peroxide with iodine) and deuterium fluoride laser are two laser types capable of megawatt-range continuous beam output. • Managing chemical fuel presents its own problems, and issues with cooling and overall inefficiency remain. • These problems could be lessened if the weapon were mounted either at a defensive position near a power plant, or on board a large, possibly nuclear powered, water-going ship, as it would have the advantage of plentiful water for cooling.
  5. 5. COUNTERMEASURES • The Chinese People's Liberation Army has invested in the development of coatings that can deflect beams fired by U.S. military lasers. • Lasers are composed of light that can be deflected, reflected, or absorbed by manipulating physical and chemical properties of materials. • Artificial coatings can counter certain specific types of lasers, but if a different type was used than the coating was designed to handle it would be able to burn through it. • Available information on a system's size, power consumption, major components, and laser generation methods can determine the type of laser beam and which type of coating. • The coatings are made of several different substances including low-cost metals, rare earths, carbon fiber, silver, and diamonds that have been processed to fine sheens and tailored against specific laser weapon systems.
  6. 6. PARTICLE BEAM WEAPONS • Particle-beam weapons can use charged or neutral particles, and can be either endoatmospheric or exoatmospheric. • Particle beams as beam weapons are theoretically possible, but practical weapons have not been demonstrated. Certain types of particle beams have the advantage of being self-focusing in the atmosphere. • Blooming is also a problem in particle-beam weapons. Energy that would otherwise be focused on the target spreads out; the beam becomes less effective: Thermal blooming occurs in both charged and neutral particle beams, and occurs when particles bump into one another under the effects of thermal vibration, or bump into air molecules. Electrical blooming occurs only in charged particle beams, as ions of like charge repel one another.
  7. 7. REFERENCES • http://freedomfightersforamerica.com/yahoo_site_admin/assets/images/active_denial_beam.14 1175821_std.gif • http://www.army- technology.com/uploads/newsarticle/4149251/images/447551/large/us%20navy%20large.jpg • http://teamafrl.afciviliancareers.com/sites/default/files/Directed_Energy.jpg • http://www.wired.com/images_blogs/dangerroom/2013/03/active_denial_system.jpg • http://tracesofreality.com/wp-content/uploads/2013/01/rheinmetall.jpg
  8. 8. THANK YOU

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