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Electromagnetic wave and weapons

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it is about emp weapons, laser cooling etc.

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Electromagnetic wave and weapons

  1. 1. 1
  2. 2. Outline 1.) Introduction 2.) Electromagnetic wave 3.) Effect of electromagnetic wave 4.) Lightning 5.) EMI 6.) E-bomb 7.) FCG 8.) Active denial system 9.) HAARP project 2
  3. 3. Introduction Electromagnetic warfare is a newly growing global concern, which threatens all the developed countries. It affects only electrical & electronics component and networks. i.e. mobile, laptop , power grid , substations 3
  4. 4. Electromagnetic Waves 4
  5. 5. Properties of EM waves 5
  6. 6. • It travels with the speed of light. • Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with any charged particles. • Electromagnetic wave carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. • EM waves are massless, but they are still affected by gravity. 6
  7. 7. 7
  8. 8. Applications • Communication • Heating • Cooling • Medical • Neuclear physics • Defence EM waves are basically used in following ares- 8
  9. 9. Cooling? 9
  10. 10. Laser cooling Laser cooling refers to a number of techniques in which atomic and molecular samples are cooled down to near absolute zero through the interaction with one or more laser fields. 10
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  14. 14. Lightning • Lightning may also be regarded as a transient , high current electric discharge. • It is a major natural source of Electromagnetic radiation that interferes with modern electronics. • The current generated by these are in range of 10kA to 200 kA. 14
  15. 15. Process of thundering 15
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  17. 17. DomesticPower line Protection 17
  18. 18. Electromagnetic Interference 18
  19. 19. • EMI is the degradation in the performance of a device due to fields making up the Electromagnetic environment. 19
  20. 20. Withstanding capability of electronic components to an EM wave is called ELECTROMAGNETIC COMPATIBILITY. Electronic components are made compatible with following techniques- 1.)shielding 2.)Grounding 3.)Filtering 20
  21. 21. Protection from EMI 21
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  25. 25. It is a Future weapon i.e. more suitable weapons than conventional weapon to achieve shock effect over large target sets with small attacking forces. The objective is to paralyze the enemy’s communication systems as quickly as possible. It is of two types- 1.)Neuclear emp weapon 2.)non-neuclear emp weapon 25
  26. 26. E-bomb Technology Base: • Power source - Explosively pumped Flux Compression Generator (FCG). • FCG invented by Los Alamos Labs during the 1950s. • FCG can produce tens of Mega Joules in tens to hundreds of microseconds. • Peak current of an FCG is 1000 X that of a typical lightning stroke. 26
  27. 27. Flux Compression Generator It is a device which is used for high power EMP generation by compressing the magnetic flux using high explosive.it is one time usable device. 27
  28. 28. Principle of Operation Magneto-explosive generators use a technique called "magnetic flux compression". It works on Maxwell’s 3rd principle which says that magnetic flux is conservative. ∫B.ds = φ 28
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  30. 30. Hollow tube generator 30
  31. 31. Helical Generator 31
  32. 32. Disc Generator 32
  33. 33. Damage Mechanisms: • Low frequency pulses produced by FCG create high voltage spikes on fixed wiring infrastructure. • Microwave radiation from HPM devices can couple directly through ventilation grilles, gaps between panels, poor interface shielding - producing a spatial standing wave inside the equipment cavity. 33
  34. 34. Maximising Bomb Lethality: Lethality is maximized by maximizing the power coupled into the target set. • Maximize peak power and duration of warhead emission (using powerful FCG). • Maximize coupling efficiency into target set. 34
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  37. 37. Defenses Against E-bombs: • Destroy the delivery vehicle or launch platform • Electromagnetically harden important assets • Hide important assets 37
  38. 38. Vulnerability Reduction (Hardening): 38
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  40. 40. Active denial system is a non-lethal directed energy weapon developed by U.S. military designed for area denial, perimeter secuirty and crowd control. The ADS works by firing a high-powered beam of 95 GHz waves at a target, which corresponds to a wavelength of 3.2 mm. The ADS millimeter wave energy works on a similar principle as a microwave oven, exciting the water and fat molecules in the skin, and instantly heating them via dielectric heating. 40
  41. 41. One significant difference is that a microwave oven uses the much lower frequency (and longer wavelength) of 2.45 GHz. The short millimeter waves used in ADS only penetrate the top layers of skin, with most of the energy being absorbed within 0.4 mm (1/64"),whereas microwaves will penetrate into human tissue about 17mm (0.67"). 41
  42. 42. Precaution Reflective materials such as aluminium cooking foil should reflect this radiation and could be used to make clothing that would be protective against this radiation. it was applied in afganistan by NATO but not fully operational. 42
  43. 43. HAARP project 43
  44. 44. HAARP Funded by us navy us air force Purpose is to Analyse the ionosphere & developing new communication technologies High Frequency Active Auroral Research Program Can be used for weather changing of a local area. 44
  45. 45. BASIC DEVICES USED 45
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  47. 47. starfish Prime was a high-altitude(250 km ) nuclear test conducted by the United States on July 9, 1962, a joint effort of the Atomic Energy Commission (AEC) and the Defense Atomic Support Agency. A Thor rocket carrying a W49 thermonuclear warhead and a Mk. 2 reentry vehicle was launched from Johnston Island in the Pacific Ocean. It produced a yield equivalent to 1.4 megatonnes of TNT 47
  48. 48. Due to this atmospheric test the 5 american and 2 russian sattelites had been damaged within One month of the testing date while it was of less powered than now. Due to this now no open air test are allowed to be conducted. 48
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  50. 50. Effect of EMP Weapons EMP weapon No Casualities, No structural loss Only Economical loss 50
  51. 51. EFFECTS At high power and frequency it can cause genetic changes in body. It can cause cancer. It damages all the electronic components. It can create disasters like wind storm , lightining. 51
  52. 52. Neuclear war vs E-war 52
  53. 53. Effect on U.S.A. 53
  54. 54. Strategic importance 54
  55. 55. Conclusion By the previous discussion we can say that electromagnetic waves are a gift from god to us, It depend upon us how to use it….. 55
  56. 56. REFERENCES 1. Jay J. Ely - NASA langley research centre 2. Paul Thomas – Royal Air Force 3. DRDO – laser department 4. Carlo Corp- monash university , Australia 5. Wikipedia.org 6. Threat assesment of EMP- american congress 7. EMP Commision assesment report 8. Mathew N.O. Sadiku- principles of EM 9. Kraus/Fleisch- EM with application 10. NATO- active denial system report 56
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