RADAR STEALTH TECHNOLOGY

PRESENTED TO:MR.PRADEEP LAMBA(Assistant Professor) DEPTT.- URJA MANDIR

PRESENTED BY:PRAGATI GARGB.TECH EC (III YR.)ROLL NO.-8778 BANASTHALI UNIVERSITY

CONTENTS1. INTRODUCTION2. EARLY WORK3. RADAR4. HOW DOES RADAR WORKS?5. RADAR CROSS SECTION6. STEALTH TECHNOLOGY7. HOW DOES STEALTH TECHNOLOGY WORKS?8. VEHICLE SHAPE9. RAMs10. TYPES OF RAMs11. COATING AND RAMs12. DISADVANTAGES13. FUTURE SCOPE14. CONCLUSION15. REFRENCES

INTRODUCTION• RADAR means “Radio Detecting And Ranging” and STEALTH means “Avoiding Detection”.

• ‘Radar Stealth Technology’ is used to prevent the detection of aircrafts or planes from radar systems.

EARLY WORKWorld War II played an important role in stealth technology development.Germans were the 1st developersGermans developed the Nano paint during WW II.

F117 NIGHTHAWKFirst Aircraft based on RADAR Stealth Technology

-By Lockheed Developers

RADAR

Detect and monitor objects.Measures the speed, range ,direction or altitude of an object using Doppler's shiftReflection of electromagnetic waves.

SLIDE

HOW RADAR WORKS? The RADAR dishes transmits radio waves that bounces off the object in their path and get back to radar.The object returns a tiny part of wave’s energy to the dish that is located at the same site as the transmitter.

RCS is the measure of a target's ability to reflect radar signals.RCS is related to:

o Aircraft’s physical geometryoDirection of radar signaloFrequency of radar signaloMaterial of aircraft

RADAR CROSS SECTION (RCS)

STEALTH TECHNOLOGYScientifically known as LOW OBSERVATORY TECHNOLOGY(LOT)

Used in military aviation

Reduces detection range of an aircraft

Partial invisibility to RADAR

Similar to camouflage tactics used by soldiers

HOW DOES STEALTH TECHNOLOGY WORKS?

There are two aspects of RCS minimization

techniques:

1.Vehicle shape2. RADAR absorbent material

VEHICLE SHAPEIt’s tail should be at ACUTE angle.Planes wings has to kept at ANGLE.Design of NOSE.

CONVENTIONAL AIRCRAFT

STEALTH AIRCRAFT

RADAR ABSORBING MATERIALS

TYPES OF RAMS Iron ball paint. Foam absorber Jaumann absorber

COATING AND ABSORBERS RAMS

RAMs dissipate the energy of the radar wave to prevent the reception of reflected signals.

The dissipation process converts the radio frequency (RF) energy to a negligible quantity of heat.

It deflects, absorbs and reduce the detection of RADAR range.

Sikorsky UH-60 Black Hawks 22 Helicopter – Used by the Americans to enter into the Pakistan and kill OSAMA BIN LADEN successfully.

DISADVANTAGESCannot fly fast.Cannot Maneuver.Reduced amount of payload.High cost.

Stealth technology is clearly the future of air combat. As, air defence systems grow more accurate and deadly, stealth technology can be a factor for a decisive by a country over the other.It will also get incorporated in ships, helicopters, tanks and transport planes. Ex-RAH66 "Comanche" and the Sea Shadow ship.

FUTURE SCOPE

CONCLUSION

Well to conclude the current scenario appears some things similar to the cold war both sides are accumulating weapons to counter each other and each side be termed as ‘STEALTH TECHNOLOGY’ and the other as ‘ANTI-STEALTH TECHNOLOGY’.

It’s an arm race expect it isn’t between specific countries.

REFRENCES1. http://www.totalairdominance.50megs.com/articles/stealt

h.htm2. http://en.wikipedia.org/wiki/Stealth_technology3. http://www.espionageinfo.com/Sp-Te/Stealth-Technology.

html4. http://science.howstuffworks.com/question69.htm 5. http://images.google.co.in/images

THANK YOU