Presentation on stealth technology

DRK College of Engineering & Technology

Date Technical Seminar

Welcome TOSeminar On

STEALTH TECHNOLOGY


Technical SeminarDate

Stealth TechnologyScientifically know as LOW OBSERVATORY.

Used in military aviation

Reduces detection range of an air craft Similar to camouflage tactics

used by soldiersPartial indivisibility to radar and other detection



History:The first “STEALTH” aircraft have been developed in Germany during the last years of WWII.

This technique has also been used in ships.

Later Americans worked on stealth technology and succeeded.



Electromagnetic radiation with longer wavelengths than those of visible light.

frequency range approximately 430 THz down to 300 GHz.

thermal radiation emitted by objects near room temperature is detected.

Infrared radiation



PLASMA STEALTH

In this stealth the aircraft injects a stream of ionized gas



F-22 RAPTOR



What Is RADAR ?Radar is abbreviated as radio detection and ranging.

Radar was developed for war application , now its applications had diversified .

This is used to launch the missiles based on the target and also counter attack the missiles launched by other countries.



RADAR CROSS-SECTION REDUCTIONS

Almost since the invention of radar, various techniques have been tried to minimize detection

Some of the techniques used for this purpose are:

1.Vehicle shape

2.Radar absorbing material



STEALTH VECHICLE SHAPES & DESIGN

Radar absorbing materials

Acute angle

Design of NOSE

Stealth air craft must bury the engines within the wings



A corner reflector is a retro reflector consisting of three mutually perpendicular, intersecting flat surfaces, which reflects electromagnetic waves back towards the source



Difference between conventional & stealth aircraft design

Stealth technology is usedUsing Normal shape



Normal fighter plane showing the engine

Engines of the aircraft are covered



Exhaust PLUME of a normal plane

Stealth Aircraft without Exhaust



Nanostructural composite material, absorbing without reflection radar wave.

What is Radar Absorbing material(stealth)?

Magnetic ferrite-based substance

RAM reduces the radar cross selection making the object appear smaller.



B-2 BOMBER



CASE STUDY ON NIGHTHAWK PLANES



Crew oneLength 19.4m(63ft 9in)Height 3.9m(12ft 9in)Weight 23625kgAngle of Sweep of Delta Wing 67`





Advantages:Reduces the causality rates

during war

Saving military budget.

Develop the military secretes

Bluff the anti-detective device

Stealth aircraft are invisible to radar



Disadvantages: Stealth aircraft cannot fly fast.

It is not maneuverable.

stealth aircraft can carry

reduced amount of payload.

Cost of maintenance.

Very economic.

Does not provide the optimum

amount of lift.



Development in the field of defense Most countries are investing heavily in them and the

emerging technologies. Stealth Technology has improved significantly more

advanced. stealth technology are not yet available worldwide,

but military forces around the world will soon begin to attempt to mimic some of the key features of stealth planes.

Future Of The STEALTH



Conclusion. Stealth technology developed a lot. Investment needed is very high. High chance of low cost gain. A lot learned about signature reduction

and absorption. Success yet to be proved extensively. Useful for other projects.





References:

1. http://www.totalairdominance.50megs.com/stealth.htm2. http://en.wikipedia.org/wiki/Stealth_technology3. http://en.wikipedia.org/wiki/Radar4. http://en.wikipedia.org/wiki/Stealth_ship5. http://www.resonancepub.com/images/stealth_ship.gif6. http://images.google.co.in/images 7. http://www.airplanedesign.info/51.htm8. http://www.military-heat.com/43/russian-plasma-stealth-fighters/

http://www.totalairdominance.50megs.com/stealth.htm

http://en.wikipedia.org/wiki/Stealth_technology

http://en.wikipedia.org/wiki/Radar

http://en.wikipedia.org/wiki/Stealth_ship

http://www.resonancepub.com/images/stealth_ship.gif

http://images.google.co.in/images

http://www.airplanedesign.info/51.htm

http://www.military-heat.com/43/russian-plasma-stealth-fighters/

http://www.military-heat.com/43/russian-plasma-stealth-fighters/

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Presentation on stealth technology