This document discusses stealth technology, which uses designs and materials to make military vehicles like aircraft, ships, and missiles harder to detect by radar or other sensors. It provides examples like the F-117 Nighthawk stealth fighter, which has flat radar-absorbing surfaces, buried engines, and an internal weapons bay to reduce its radar cross-section. Radar absorbing materials coat stealth vehicles to absorb radar waves without reflection. While stealth technology provides advantages like surprise attacks, it also has limitations such as reduced speed, maneuverability, and payload capacity compared to conventional vehicles.

1. STEALTH TECHNOLOGY
Presented By
SUPREETH.S
(4MH07ME047)
Mysore, karnataka
STEALTH TECHNOLOGY
JNANA VIKAS INSTITUTE OF TECHNOLOGY
Under the Guidance of
Mr.Syed Abrar Ahmed B.E, M.Tech
Asst Professor, Dept Of ECE, JVIT
Presented by
NANDINI MN
(1JV12EC411)

2. CONTENTS
ABSTRACT
INTRODUCTION
HISTORY
CASE STUDY:F-117 NIGHTHAWK
 RADAR ABSORBING MATERIALS
 ADVANTAGES
LIMITATIONS
CONCLUSION

3. ABSTRACT
• Stealth refers to the act of trying to hide or evade detection.
• Stealth Technology essentially deals with designs and materials engineered
for the military purpose of avoiding detection by radar or any other
electronic system.
• Stealth, or anti-detection, technology is applied to vehicles (e.g., tanks,
missiles, ships, and aircraft)with the goal of making the object more
difficult to detect at closer and closer ranges thus providing an element of
surprise in the attacks.

4. What is Stealth Technology ?
 Stealth is a technique in which we can make any object invisible in a
particular range.
 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 World War II.
This technique has also
been used in ships , tanks and submarines .
Later Americans worked on stealth technology
and suceeded in improvising the
technology.

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

8. 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.

9. CASE STUDY ON NIGHTHAWK PLANES

10. 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°

11. 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
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
radar reflectors, so the
F-1 17 carries its
weapons internally.
The bomb doors only
open for a moment
when the warload is
released.
E: The Nighthawk's
twin General Electric
engines are buried
deep in the fuselage.
They have shallow
exhausts, which cool
and deflect the exhaust
gases upward to
minimize heat
emissions.
F: it is kept at an angle
in order to reduce the
detected by the radar.

12. ENGINES OF THE AIRCRAFT ARE COVERED
NORMAL FIGHTER PLANE SHOWING THE
ENGINE

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

14.  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.
Sensors

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

16. 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.
FLIGHT MANAGEMENT

17. 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

18. ADVANTAGE
 Stealth aircraft are invisible to radar.
 Develop the military secretes.
 Surprise attack for the enemies as it is invisible to the RADAR

19. 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

20. 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.

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

22. ANY QUERIES
ANY QUERIES??

23. THANK YOU