This seminar presentation summarizes stealth technology, its principles and applications. Stealth technology uses shapes, materials and other techniques to reduce detection by radar, sonar and infrared systems. It has various applications in naval warfare, allowing ships and submarines to conduct secret missions undetectably. Current uses include patrolling and spying, while future development focuses on improved designs and payloads. In conclusion, stealth technology remains an important topic despite counter-technologies challenging complete invisibility.

1. A Seminar Presentation on
Stealth Technology
Arya institute of engineering & technology
Jaipur
Department of Mechanical Engineering
Presented by:
Bharat Kumar Yadav
16EAIME024
Presented to:
Mr. Pankaj Kumar
Asst. Professor
Department of Mechanical Engineering
Arya Institute of Engineering and Technology29-11-2020 1

2. Contents
•
Introduction
•
Stealth Technology in Naval Warfare
•
Principle and Working
•
Advantages
•
Current Use
•
Future
•
Ships using Stealth Technology
•
Conclusion
Arya Institute of Engineering and Technology29-11-2020 2

3. Introduction to Stealth Technology
•
Stealth Technology or Low Observable Technology (LO
technology) is a sub- discipline of military tactics and passive
electronic countermeasures.s
•
It cover a range of techniques used with personnel, aircraft,
ships, submarines, missiles and satellites to make them less
visible (ideally invisible) to radar, infrared, sonar and other
detection methods.
Arya Institute of Engineering and Technology29-11-2020 3

4. Stealth Technology in Naval Warfare
• Stealth Technology finds its extensive application in the Naval
Domain also as many ships and submarines are designed and
fabricated as per the technology.
• It uses design, material and advanced technology to ensure
that a warship or submarine avoids detection by electronic
systems. A stealth ship or submarine aims at becoming
invisible to Radar, Sonar and Infrared systems.
Arya Institute of Engineering and Technology29-11-2020 4

5. Principle and Working
Principle:
Stealth technology is not a single technology but a combination
of technologies that attempt to greatly reduce the distances at
which a vehicle can be detected; in particular radar cross section
reductions, but also acoustic, thermal, and other aspects.
Stealth technology works on the principle of eliminating radar
reflections. This can be done by either:
• Deflecting Radio Waves (Shaping of the surfaces)
• Absorbing Radio Waves (RAM coatings)
Arya Institute of Engineering and Technology29-11-2020 5

6. Principle and Working
Radar cross-section (RCS) reductions are achieved by :
• Vehicle Shape and Design
The shape and design are such that they deflect the incoming
radio waves due to their clean yet angular design. The radio
waves get deflected due to the presence of angled physical
elements.
Arya Institute of Engineering and Technology29-11-2020 6

7. Principle and Working
Arya Institute of Engineering and Technology29-11-2020 7
Fig.01 principle & working of stealth Technology

8. Principle and Working
The clean and angular design
of deflects the incoming radio
signals.
Arya Institute of Engineering and Technology29-11-2020 8
Fig.02 Design of ship

9. Principle and Working
Radar cross-section (RCS) reductions are achieved by :
• Material
Radar-absorbing material (RAM), often as paints, are used
esepically on the edges of metal surfaces they absorb radiated
energy from a radar station into the coating and convert it to
heat rather than reflect it back. Current technologies include
dielectric composites and metal fibers containing ferrite
isotopes. A commonly used material is known as “Iron Ball
Paint”.
Arya Institute of Engineering and Technology29-11-2020 9

10. Advantages
• Ships and Submarines using Stealth Technology are almost
undetectable by RADAR.
• They can be used for secret missions due to their unmatched
ability to disguise the radio waves.
• Since they aren't noticeable, they ensure relatively better
safety of the pilot and crew as compared to the ships and
submarines using conventional technology.
Arya Institute of Engineering and Technology29-11-2020 10

11. Current use
• Currently many countries including: USA, UK, France, Sweden,
India etc. are using Stealth Ships and submarines.
• Stealth Ships and submarines are generally used for patrolling
and spying purposes of disputed waters.
• Due to their inability to carry relatively less payload, they
somewhat are less suitable for direct combat instead of that
they are unchallengeable when it comes to launch a surprise
attack.
Arya Institute of Engineering and Technology29-11-2020 11

12. Future
•
Improvement in designs are in progress as the ships and
submarines become detectable when they open the weapon
bay.
•
Different countries are working on prototypes of ships and
submarines with improved payload.
•
Development of advanced RADAR absorbing materials (RAM)
is in progress.
Arya Institute of Engineering and Technology29-11-2020 12

13. Conclusion
Stealth technology is an interesting and topic and as much of the
research and technology development done in this area is
secretive, it is impossible to know exactly what sort of new
advances lie in the future. The stealth technology has gone as far
as it could go but the fact still lie that all stealth aircraft are
vulnerable to existing and futuristic counter-stealth technologies.
Arya Institute of Engineering and Technology29-11-2020 13

14. Thank You!
Arya Institute of Engineering and Technology29-11-2020 14