ppppppppttttttttt-130801041812-phpapp01

Slide 1

DRKCollege of Engineering & TechnologyDateTechnical SeminarWelcome TOSeminar On

STEALTH TECHNOLOGY1

DRKCollege of Engineering & TechnologyTechnical SeminarDate Stealth Technology

Scientifically know as LOW OBSERVATORY.

Used in military aviation

Reduces detection range of an air craftSimilar to camouflage tactics used by soldiersPartial indivisibility to radar and other detection2

DRKCollege of Engineering & TechnologyTechnical SeminarDateHistory:

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.

3

DRKCollege of Engineering & TechnologyTechnical SeminarDateElectromagnetic radiationwith longer wavelengthsthan those ofvisible light.

frequencyrange approximately 430THz down to 300GHz.

thermal radiation emitted by objects near room temperature is detected. Infrared radiation

4

DRKCollege of Engineering & TechnologyTechnical SeminarDatePLASMA STEALTHIn this stealth the aircraft injects a stream of ionized gas

5

DRKCollege of Engineering & TechnologyTechnical SeminarDate

F-22 RAPTOR6

DRKCollege of Engineering & TechnologyTechnical SeminarDateWhat 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.

7

DRKCollege of Engineering & TechnologyTechnical SeminarDateRADAR CROSS-SECTION REDUCTIONSAlmost 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 material8


STEALTH VECHICLE SHAPES & DESIGNRadar absorbing materials

Acute angle

Design of NOSE

Stealth air craft must bury the engines within the wings

9


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

10

DRKCollege of Engineering & TechnologyTechnical SeminarDateDifference between conventional & stealth aircraft design

11


Normal fighter plane showing the engineEngines of the aircraft are covered12


Exhaust PLUME of a normal planeStealth Aircraft without Exhaust13


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. 14


B-2 BOMBER15

DRKCollege of Engineering & TechnologyTechnical SeminarDateCase study on nighthawk planes

16

DRKCollege of Engineering & TechnologyTechnical SeminarDateCrew oneLength 19.4m(63ft 9in)Height 3.9m(12ft 9in)Weight 23625kgAngle of Sweep of Delta Wing 67`

17


18

DRKCollege of Engineering & TechnologyTechnical SeminarDateAdvantages:

Reduces the causality rates during war

Saving military budget.

Develop the military secretes

Bluff the anti-detective device

Stealth aircraft are invisible to radar19

DRKCollege of Engineering & TechnologyTechnical SeminarDateDisadvantages: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.

20

DRKCollege of Engineering & TechnologyTechnical SeminarDate Development in the field of defenseMost 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 STEALTH21

DRKCollege of Engineering & TechnologyTechnical SeminarDateConclusion.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.22


23

DRKCollege of Engineering & TechnologyTechnical SeminarDateReferences: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/

24

Documents

ppppppppttttttttt-130801041812-phpapp01