This document provides an overview of stealth technology used in aircraft. It discusses the history of stealth beginning with camouflage tactics in WWI. Key aspects covered include how radar works, methods used in stealth like shape design and radar absorbing materials, and examples of stealth aircraft like the F-117, B-2, and F-22. Advantages of stealth include invisibility to radar and performing spy missions covertly, while disadvantages include reduced payload and high costs. The document concludes that stealth technology is an important future of military aviation.

1. Stealth Technology In Aircraft
By Ayush Sharma
ITRP Presentation
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2. Content
• Introduction
• History
• Radar
• Method used in stealth technology
• List of stealth Aircraft
• Stealth helicopter
• India step towards stealth technology
• Advantages
• Disadvantages
• Conclusion
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3. What is Stealth Technology?
• Scientifically know as LOW OBSERVABILITY
TECHNOLOGY.
• In simple terms, it allows an aircraft to be partially
invisible to radar or any other means of detection.
• This gives a clear and safe striking distance for the
aircraft.
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4. History
• THE IDEA OF STEALTH COMES FROM THE CONCEPT OF CAMOUFLAGE TACTIS USED
BY SOLDIERS IN JUNGLES FOR HIDING PURPOSE
• ONE OF THE EARLIEST AIRCRAFT WAS THE HORTEN HO 229 MADE BY GERMANS
LATE IN WORLD WAR II.
• IT WAS COME UNDER CONSIDERATION WHEN CIA REQUESTED FUNDING FOR
STEALTH AIRCRAFTS
• THE THEORY COMES INTO EXISTENCE FROM THE AIRCRAFT LIKE F-117
NIGHTWALK AND B-2 SPIRIT
• ADVANCEMENT IN THIS AREA
• F-22 RAPTOR
• PAK-FGFA (T-50)
• J-20
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5. CAMOUFLAGE TACTIS
• It came by British in word war I.
• It is a military science, the art and practice of concealment and
visual deception in war.
• It means defeating enemy observations by concealing or
mislead.
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6. RADAR
• Radio Detection And
Ranging.
• Radar is an object-
detection system that
uses radio waves to
determine the range,
altitude, direction, or
speed of objects.
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7. Method Used in Stealth Technology
• The airplane can be shaped so that any radar signals
can be reflected away from the radar equipment.
• The airplane can be covered in materials that
absorbs signals known as ram.
• Plasma stealth technology.
• Infrared signature given out of the plane.
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8. Shape Of Stealth Aircraft
• The most effective way to counteract the ability of radar was
to scatter the radar waves from the transmitter to direction
where receives would be unlikely to be located.
• The ideal shapes to return radar would be dihedral or
trihedral corners.
• The first aircraft which fully utilize this research is f-117
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9. Conventional Aircraft
• Most conventional aircraft have a rounded shape. This shape
makes them aerodynamic, but it also creates a very efficient
radar reflector. The round shape means that no matter where
the radar signal hits the plane, some of the signal gets reflected
back:
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10. Stealth Aircraft
• A stealth aircraft, on the other hand, is made up of completely
flat surfaces and very sharp edges. When a radar signal hits a
stealth plane, the signal reflects away at an angle, like this:
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11. Plasma stealth
In this Plasma stealth the
aircraft injects a
stream of ionized
gas which envelopes
the aircraft due to
which most of the
radar wave are
absorbed, this make
the aircraft
completely invisible.
First develop by Russia
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12. Radar absorbing material(ram)
• They are used to absorb the energy of the radar wave,
so to prevent the reception of a reflected signal by the
antenna.
• RAM is usually a dielectric material such as carbon or
magnetic ferrite.
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13. Infrared Signature
• It is the important factor that influences the stealth
capability of an aircraft. Usually planes are visible
because of the high temp. Exhaust they give out.
• The reduction of infrared totally depends on the
engine and where the engine is placed in it.
• The technology behind this is top secret
• Aircrafts-:
B-2, f-22
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15. List of stealth aircraft and countries
1.F-117 NIGHTWALKER ,USA
2.B2-SPIRIT,USA
3.F-22 RAPTOR,USA
4.PAK-FA (T-50),RUSSIA
5.F-35 LIGHTINING,USA
6.J-20,CHINA
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16. F-22 RAPTOR
(USA)
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17. B2 BOMBER USA
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18. PAK-FA (T-50)
RUSSIA
F-117 NIGHTWALKER
USA
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19. Stealth helicopter
• Newest addition in stealth technology.Designs for blades
have emerged that can significantly reduce noise.
• Used for raid on the compound of Osama bin Laden on
May 2, 2011.
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20. India’s step towards stealth
Hal light combat helicopter
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21. Sukhoi T-50 stealth fighter
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23. Future Indian Stealth Aircraft
• DRDO AURA
• AURA (Autonomous Unmanned Research Aircraft)
• Role -Unmanned Stealth Bomber
• Manufacturer- DRDO
• Designer- DRDO
• First flight- 2018
• Introduction -2019-2020
• Status -Under Development
• Primary user- Indian Air Force
• Indian Navy
• Number built -0
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24. Advantages
 Stealth aircraft are invisible to radar.
 Develop the military secretes.
 Saving military budget.
 We can perform spy mission.
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25. Disadvantages
 Stealth technology has its own disadvantages like other technologies.
 Stealth aircraft cannot fly as fast like conventional aircraft.
 Another serious disadvantage with the stealth aircraft is the reduced
amount of payload it can carry.
 Cost of maintenance
 High cost
-B2 Bomber 2 billion USD
-F117-A 70 million USD
-F22 100 million USD
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26. Conclusion
• Undoubtedly, stealth technology is the future of military
combat and at present is one of the best technology to make
things invisible as far as possible.
• To be incorporated not only in fighters and bombers but
also in ships, helicopters, tanks and transport planes.
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27. THANK U!
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