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ELECTROMAGNETIC BOMB
5/23/2015 1
Contents:
Introduction.
Basic Principle of E-Bomb.
Technology Base for E-Bomb.
Coupling Modes.
E-Bomb Targets.
Firing of E-Bombs.
Defences Against E-Bombs.
Military Applications of E-Bomb.
Advantages and disadvantages.
Conclusions.
References.
5/23/2015 2
Introduction
The most recent war operations relied on air power and precision
guided ammunitions.
Future campaigns will require more suitable weapons to achieve
shock effect over large targets with small attacking forces.
Electromagnetic bombs (E-Bombs) can perform such a role.
5/23/2015 3
Basic Principle of E-Bomb
The Electro Magnetic Pulse (EMP) effect .
The Electromagnetic Pulse is an electromagnetic shock wave.
This pulse of energy produces a powerful electromagnetic field
sufficiently strong to produce short lived transient voltages of
thousands of volts on exposed electrical conductors like wires,
printed circuit boards etc.
This can cause irreversible damage to wide range of electrical and
electronic equipments particularly computers and radio or radar
devices.
5/23/2015 4
Technology Base for E-Bomb
There are two widely used technologies:
Flux Compression Generators(FCG),and
Virtual Cathode Oscillator or Vircator.
5/23/2015 5
Flux Compression Generators(FCG)
FCG can produce tens of Mega Joules in tens to hundreds of
microseconds.
Main parts of FCG include:
Armature(copper tube).
Stator(helical heavy wire coil).
Initiator(plane wave explosion lens) and
5/23/2015 6
Contd…..
Jacket(prevents disintegration due to magnetic field).
FCG start current is provided by an external source.
When start current peaks initiator is fired to initiate explosive burn.
Explosive pressure expands armature and creates moving short.
Moving armature compressses a magnetic field.
5/23/2015 7
Virtual Cathode Oscillator
5/23/2015 8
Contd…..
Electron beam is accelerated through foil or mesh anode.
Electrons passing through anode will form a bubble of space charge
around anode.
Under proper conditions this space charge will oscillate at micro
frequencies.
Peak power of tens of GW for 100s of sec.
Cheap and simple to manufacture.
5/23/2015 9
Coupling Modes:
Front Door Coupling through antennas.
Destroys RF semiconductor devices in transmitters and receivers.
Back Door Coupling through power /data cabling,
telephone wiring.
Destroys exposed semiconductor devices.
Punches through isolation transfomers.
5/23/2015 10
E-Bomb Targets:
Fixed installations(buildings,radars etc.).
Radiating mobileshidden targets(ships,mobiles).
Non radiating mobileshidden targets.
5/23/2015 11
Firing of E-Bombs:
Warhead comprises of priming current source,FCG(cascade) and
Vircator tube.
Missile installations must supply 100% of weapon priming energy
from own supply.
Bomb installation-weapon can be precharged before release from
aircraft.
A free fall E-Bomb is more lethal.
5/23/2015 12
Firing of E-Bomb
5/23/2015 13
Firing options:
Aircraft Dumb bombs (free fall delivery).
GPS or satellite guided bombs.
standoff missiles.
Cruise Missiles(weight restricted to 340kg).
5/23/2015 14
Defence and Hardening
Destroy the delivery vehicle.
Electromagnetically harden/hide important assets.
Use optical fibres for data transfer and comprehensive shielding.
Isolate power feeds with transient arrrestors.
Use non-electromagnetic power feed and electromagnetic “air
lock”.
5/23/2015 15
Hardening
5/23/2015 16
Military applications of E-Bomb:
Electronic combat:
The E-Bomb enables rapid attrition of enemy electronic assets over
large areas.
The E-Bomb offers important force multiplication effects compared
to conventional weapons.
Strategic warfare:
Economic vitals-finance and stock
markets,manufacturing,petroleum are highly vulnerable.
5/23/2015 17
Contd…..
Transport infrastructure-signalling and vehicle ignition systems are
vulnerable.
Population-radio and TV receivers.
Military equipments are vulnerable.
Theatre Warfare
Offensive Counter Air operations-disable aircraft in flight,on
ground and destroy their supporting infrastructure.
5/23/2015 18
Contd…..
Sea Control-disable surface combatants prior to attack with
conventional weapons.
Punitive Missions:
The E-Bomb is a punitive weapon as it can cause much economic
and military damage with no loss of civilian life.
E-Bombs could be profitably used against countries which sponser
terrorism and info-terrorism.
5/23/2015 19
Advantages:
Not lethal to humans.
Negligible collateral damage.
No mass media coverage of bombing casualities(broadcast
equipment destroyed)will reduce threshold for the use of strategic
air power and missile forces.
5/23/2015 20
Disadvantages:
Means of delivering E-Bombs are difficult.
Difficulty in kill assessment.
Atmospheric propagation of pulse.
5/23/2015 21
Conclusion:
E-Bombs are weapons of electrical mass destruction.
High payoff in using E-Bombs against fundemental infrastructure
results in substantial paralysis.
Decisive advantage in the conduct of electronic combat.
E-Bombs are non lethal weapon.
The critical issues for next decade are the devolopment of E-
Bombs and hardening of infrastructure.
5/23/2015 22
References:
1. The air power manuel second edition.RAAF
APSC,CANBERRA,1994.
2. IEEE PULED POWER CONFERENCE,NEWYORK,1989.
3. IEEE SPECTRUM 2002,2003,2001.
4. DIGEST OF TECHNICAL PAPERES.
5. HOEBERLING G92-’ADVANCES IN VIRTUAL CATHOD
MICROWAVE SOURCES’.
5/23/2015 23

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Emb

  • 2. Contents: Introduction. Basic Principle of E-Bomb. Technology Base for E-Bomb. Coupling Modes. E-Bomb Targets. Firing of E-Bombs. Defences Against E-Bombs. Military Applications of E-Bomb. Advantages and disadvantages. Conclusions. References. 5/23/2015 2
  • 3. Introduction The most recent war operations relied on air power and precision guided ammunitions. Future campaigns will require more suitable weapons to achieve shock effect over large targets with small attacking forces. Electromagnetic bombs (E-Bombs) can perform such a role. 5/23/2015 3
  • 4. Basic Principle of E-Bomb The Electro Magnetic Pulse (EMP) effect . The Electromagnetic Pulse is an electromagnetic shock wave. This pulse of energy produces a powerful electromagnetic field sufficiently strong to produce short lived transient voltages of thousands of volts on exposed electrical conductors like wires, printed circuit boards etc. This can cause irreversible damage to wide range of electrical and electronic equipments particularly computers and radio or radar devices. 5/23/2015 4
  • 5. Technology Base for E-Bomb There are two widely used technologies: Flux Compression Generators(FCG),and Virtual Cathode Oscillator or Vircator. 5/23/2015 5
  • 6. Flux Compression Generators(FCG) FCG can produce tens of Mega Joules in tens to hundreds of microseconds. Main parts of FCG include: Armature(copper tube). Stator(helical heavy wire coil). Initiator(plane wave explosion lens) and 5/23/2015 6
  • 7. Contd….. Jacket(prevents disintegration due to magnetic field). FCG start current is provided by an external source. When start current peaks initiator is fired to initiate explosive burn. Explosive pressure expands armature and creates moving short. Moving armature compressses a magnetic field. 5/23/2015 7
  • 9. Contd….. Electron beam is accelerated through foil or mesh anode. Electrons passing through anode will form a bubble of space charge around anode. Under proper conditions this space charge will oscillate at micro frequencies. Peak power of tens of GW for 100s of sec. Cheap and simple to manufacture. 5/23/2015 9
  • 10. Coupling Modes: Front Door Coupling through antennas. Destroys RF semiconductor devices in transmitters and receivers. Back Door Coupling through power /data cabling, telephone wiring. Destroys exposed semiconductor devices. Punches through isolation transfomers. 5/23/2015 10
  • 11. E-Bomb Targets: Fixed installations(buildings,radars etc.). Radiating mobileshidden targets(ships,mobiles). Non radiating mobileshidden targets. 5/23/2015 11
  • 12. Firing of E-Bombs: Warhead comprises of priming current source,FCG(cascade) and Vircator tube. Missile installations must supply 100% of weapon priming energy from own supply. Bomb installation-weapon can be precharged before release from aircraft. A free fall E-Bomb is more lethal. 5/23/2015 12
  • 14. Firing options: Aircraft Dumb bombs (free fall delivery). GPS or satellite guided bombs. standoff missiles. Cruise Missiles(weight restricted to 340kg). 5/23/2015 14
  • 15. Defence and Hardening Destroy the delivery vehicle. Electromagnetically harden/hide important assets. Use optical fibres for data transfer and comprehensive shielding. Isolate power feeds with transient arrrestors. Use non-electromagnetic power feed and electromagnetic “air lock”. 5/23/2015 15
  • 17. Military applications of E-Bomb: Electronic combat: The E-Bomb enables rapid attrition of enemy electronic assets over large areas. The E-Bomb offers important force multiplication effects compared to conventional weapons. Strategic warfare: Economic vitals-finance and stock markets,manufacturing,petroleum are highly vulnerable. 5/23/2015 17
  • 18. Contd….. Transport infrastructure-signalling and vehicle ignition systems are vulnerable. Population-radio and TV receivers. Military equipments are vulnerable. Theatre Warfare Offensive Counter Air operations-disable aircraft in flight,on ground and destroy their supporting infrastructure. 5/23/2015 18
  • 19. Contd….. Sea Control-disable surface combatants prior to attack with conventional weapons. Punitive Missions: The E-Bomb is a punitive weapon as it can cause much economic and military damage with no loss of civilian life. E-Bombs could be profitably used against countries which sponser terrorism and info-terrorism. 5/23/2015 19
  • 20. Advantages: Not lethal to humans. Negligible collateral damage. No mass media coverage of bombing casualities(broadcast equipment destroyed)will reduce threshold for the use of strategic air power and missile forces. 5/23/2015 20
  • 21. Disadvantages: Means of delivering E-Bombs are difficult. Difficulty in kill assessment. Atmospheric propagation of pulse. 5/23/2015 21
  • 22. Conclusion: E-Bombs are weapons of electrical mass destruction. High payoff in using E-Bombs against fundemental infrastructure results in substantial paralysis. Decisive advantage in the conduct of electronic combat. E-Bombs are non lethal weapon. The critical issues for next decade are the devolopment of E- Bombs and hardening of infrastructure. 5/23/2015 22
  • 23. References: 1. The air power manuel second edition.RAAF APSC,CANBERRA,1994. 2. IEEE PULED POWER CONFERENCE,NEWYORK,1989. 3. IEEE SPECTRUM 2002,2003,2001. 4. DIGEST OF TECHNICAL PAPERES. 5. HOEBERLING G92-’ADVANCES IN VIRTUAL CATHOD MICROWAVE SOURCES’. 5/23/2015 23

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