THE ELECTROMAGNETIC BOMB(A weapon of electrical mass destruction)

RAJKIYA ENGINEERING COLLEGEAMBEDKARNAGAR-224122

SUBMITTED TO: Mr. Mayank Kr. Gautam (Asst. Professor)

ATECHNICAL PRESENTATION

ON

SUBMITTED BY: Shubham RaoROLL NUMBER: 1473720038

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.

INTRODUCTION•The most recent war operations relied on air power and precision

guided ammunitions.•Future campaigns will require more suitable weapons than any other

conventional weapon to achieve shock effect over large targets with small attacking forces.•Electromagnetic bombs (E-Bombs) can perform such a role. •E-BOMB is weapon of electrical mass destruction that uses an

intense electromagnetic field to create a brief pulse of energy across broad spectrum to affect electronic circuitry without affecting the humans.•The objective is to paralyze the enemy’s communication systems as

quickly as possible.•Potentially non lethal but is still highly destructive.

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. • It is based on COMPTON’S effect.• In this, gamma ray photon of EM energy knock loose electrons from

atoms which travel in downward direction.• These(electrons) forms a current over the entire effected area.• It interacts with Earth’s magnetic field & produces

ELECTROMAGNETIC PULSE.

Power supply co-axial

capacitor bankbattery

FCGsPulse

shaping

network

Vircatortube

Microwave antenna

Electromagnetic pulses

pediain.com

BLOCK DIAGRAM

Technology Base for E-Bomb

There are two widely used technologies:

Flux Compression Generators(FCG)

Virtual Cathode Oscillator or Vircator

• Power source - Explosively pumped Flux• Compression Generator (FCG).• FCG transfers mechanical energy into the magnetic field• 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 is1000 X that of a typical lightning stroke.• Peak currents of Mega Amperes demonstrated in many experiments

Main parts of FCG include:

Armature(copper tube).Stator(helical heavy wire coil).Initiator(plane wave explosion lens) Jacket(prevents disintegration due to magnetic field).

Flux Compression Generators(FCG)

• FCG start current is provided by an external source.

oHigh voltage capacitor bank

oMHD (magneto hydrodynamic) device

oAny device that generate mega amperes current pulse.

•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.

Virtual Cathode Oscillator

•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.

Working of Virtual Cathode Oscillator

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.

Coupling Modes

Warhead comprises priming current source, FCG (cascade) and Vircator tube

Missile installations must supply 100% of weapon priming energy from own supply

Bomb installations - weapon can be precharged before release from aircraft

A free fall E-bomb is more lethal than a missile borne HPM warhead as a larger proportion of the weapon is the warhead

Firing of E-Bombs:

Firing of E-Bomb

Fixed installations(buildings,radars etc.).

Radiating mobiles\hidden targets(ships,mobiles).

Non radiating mobiles\hidden targets.

E-Bomb Targets:

Aircraft Dumb bombs (free fall delivery).

GPS or satellite guided bombs.

standoff missiles.

Cruise Missiles(weight restricted to 340kg).

Firing options

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.

Military applications of E-Bomb

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.

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.

ADVANTAGES

Means of delivering E-Bombs are difficult.

Difficulty in kill assessment.

Atmospheric propagation of pulse.

DISADVANTAGES

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.

CONCLUSION

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’.

REFERENCES