This document provides an overview of stealth technology, including its history, key concepts, and applications. It discusses how stealth aircraft like the F-117 Nighthawk use special shapes and radar absorbing materials to minimize detection. Specific design elements are described, such as buried engines and infrared sensors. Advantages include improved military secrecy and budget savings, while disadvantages include reduced payload and maneuverability compared to conventional aircraft. Stealth technology remains an important field with applications for aircraft, ships, and future technologies.

1. welcome

2. STEALTH TECHNOLOGY
Presented By
SUPREETH.S
(4MH07ME047)
Mysore, karnataka

3. CONTENTS
INTRODUCTION
HISTORY
CASE STUDY:F-117 NIGHTHAWK
 RADAR ABSORBING MATERIALS
 ADVANTAGES
LIMITATIONS
CONCLUSION
FUTURE STEALTH TECHNOLOGY
REFERENCES / BIBLIOGRAPHY

4. What is Stealth Technology ?
 Stealth is a technique in which we can make any object invisible.
 Stealth is an important technology which used in military operations.
Stealth technology also known as LO technology (low observable
technology)

INTRODUCTION

5. 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 suceeded.

6. 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

7. STEALTH VECHICLE SHAPES & DESIGN
It should be coated with the Radar Absorbing Materials.
It’s tail should kept an ACUTE angle.
Planes wings has to kept at Angle.
Design of Nose.
Stealth aircraft must bury the Engines within the wing or fuselage.

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

9. When we are using normal shape
While we use Stealth Technology
Difference between conventional &
stealth aircraft design

10. CASE STUDY ON NIGHTHAWK PLANES

11. Nighthawk design
Crew One
Length 19.4m (63ft 9in)
Height 3.9m (12ft 9in)
Weight 23,625kg (52,500lb)
Angle of Sweep of Delta Wing 67°

12. A: Two imaging
infrared turrets are
recessed into the nose
of the F-1 17. One
looks forward to
acquire targets; the
other is on the
underside and is used
for tracking and laser
designators .
B: The edges of the
F-1 17's cockpit
canopy, like all
surfaces on the
aircraft , have no right-
angles-these are strong
reflectors of radar.
C: The unique arrow
shape of the F-117 is
naturally unstable.
Stability is maintained
by computerized fly-
by-wire controls.
D: Bombs are strong E: The Nighthawk's F: it is kept at an angle
radar reflectors, so the twin General Electric in order to reduce the
F-1 17 carries its engines are buried detected by the radar.
weapons internally. deep in the fuselage.
The bomb doors only They have shallow
open for a moment exhausts, which cool
when the warload is and deflect the exhaust
released. gases upward to
minimize heat
emissions.

13. ENGINES OF THE AIRCRAFTARE COVERED
NORMAL FIGHTER PLANE SHOWING THE
ENGINE

14. STEALTH AIRCRAFT WITHOUT
EXHAUST
EXHAUST PLUME OF A NORMAL PLANE

15. Sensors

16. For navigation and weapon aiming, the aircraft is equipped with a forward-
looking infrared (FLIR) and a downward-looking infrared (DLIR) sensors
It consist of four probes at the nose.

17. COCKPIT

18. The cockpit has Head-up display.
equipped with large video monitors.
The cockpit has a full-colour moving map.
HEAD UP DISPLAY

19. FLIGHT
MANAGEMENT

20. Before flight, mission data is downloaded on to
the IBM AP-102 mission control computer, which
integrates it with the navigation and flight controls
to provide a fully automated flight management
system.

22. What is Radar Absorbing
Materials (Stealth)?
Nanostructural composite
material, absorbing
without reflection radar wave.
Magnetic ferrite-based substance
RAM reduces the radar cross
section making the object appear
smaller.

23. B-2 STEALTH BOMBER

24. In this stealth the
aircraft injects a
stream of ionized
gas which envelopes
the aircraft due to
which most of the
radar wave are
observe this make
the aircraft
completely invisible
PLASMA
STEALTH

25. ADVANTAGE
Stealth aircraft are invisable to radar.
Develop the military secretes.
Saving military budget.

26. Stealth technology has its own disadvantages like other
technologies.
Stealth aircraft cannot fly as fast or is not maneuverable like
conventional aircraft.
Another serious disadvantage with the stealth aircraft is the
reduced amount of payload it can carry.
On the other hand a conventional aircraft can carry much more
payload than any stealth aircraft of its class.
Cost of maintenance
DISADVANTAGE

27. CONCLUSION
CStealth technology is a techniques used
with Aircrafts, ships order to make them
less visible to radar.
l Need of Stealth Technology very
importance in military field.

28. REFERENCE:
•Future Flight: The Next Generation of Aircraft Technology, William D. Siuru ,
Jhon D. Busick, Published 1933 McGrew-Hill Professional, 194 pages, ISBN
0830643761
•Have Blue and the F-117A: Evolution of “Stealth Fighter”, By David C.
Aronstein, Albert C Piccirillo, Published 1997 American Institute of Aeronautics
and Astronautics, 305 pages, ISBN 1563472457
•Stealth technology: The Art of Back Magic, By J. Jones, Matt Thunder
•http://www.geocities.com/Area51/Shadowlands/6583/projects.html
•http://en.wikipedia.org/w/index.php?title=Stealth_aitcraft
•http://en.wikipedia.org/wiki/F-117_Nighthawk

29. ANY QUERIES

30. THANK YOU