Date post: | 06-Apr-2018 |
Category: |
Documents |
Upload: | venudhar-bhavath |
View: | 226 times |
Download: | 0 times |
of 30
8/2/2019 52998035 Stealth Technology
1/30
welcome
8/2/2019 52998035 Stealth Technology
2/30
STEALTH TECHNOLOGY
Presented By
SUPREETH.S(4MH07ME047)
Mysore, karnataka
8/2/2019 52998035 Stealth Technology
3/30
CONTENTS
INTRODUCTION
HISTORY
CASE STUDY:F-117 NIGHTHAWK
RADAR ABSORBING MATERIALSADVANTAGESLIMITATIONS
CONCLUSION
FUTURE STEALTH TECHNOLOGY
REFERENCES / BIBLIOGRAPHY
8/2/2019 52998035 Stealth Technology
4/30
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
8/2/2019 52998035 Stealth Technology
5/30
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.
8/2/2019 52998035 Stealth Technology
6/30
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
8/2/2019 52998035 Stealth Technology
7/30
STEALTH VECHICLE SHAPES & DESIGN
It should be coated with the Radar Absorbing Materials.
Its tail should kept anACUTE angle.
Planes wings has to kept atAngle.
Design ofNose.
Stealth aircraft must bury the Engines within the wing or fuselage.
8/2/2019 52998035 Stealth Technology
8/30
A corner reflector is a retroreflector
consisting of three mutually perpendicular,
intersecting flat surfaces, which reflects
electromagnetic waves back towards the
source.
8/2/2019 52998035 Stealth Technology
9/30
When we are using normal shape
While we use Stealth Technology
Difference between conventional &
stealth aircraft design
8/2/2019 52998035 Stealth Technology
10/30
CASE STUDY ON NIGHTHAWK PLANES
8/2/2019 52998035 Stealth Technology
11/30
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
8/2/2019 52998035 Stealth Technology
12/30
A: Two imaging infraredturrets are recessed into
the nose of the F-1 17.One looks forward to
acquire targets; the otheris on the underside and is
used for tracking andlaser designators .
B: The edges of the F-117's cockpit canopy, like
all surfaces on the aircraft, have no right-angles-
these are strong reflectorsof radar.
C: The unique arrowshape of the F-117 is
naturally unstable.Stability is maintained bycomputerized fly-by-wire
controls.
D: Bombs are strongradar reflectors, so the F-1 17 carries its weapons
internally. The bombdoors only open for a
moment when thewarload is released.
E: The Nighthawk's twinGeneral Electric engines
are buried deep in thefuselage. They have
shallow exhausts, whichcool and deflect the
exhaust gases upward tominimize heat emissions.
F: it is kept at an angle inorder to reduce the
detected by the radar.
8/2/2019 52998035 Stealth Technology
13/30
ENGINES OF THE AIRCRAFT ARE COVERED
NORMAL FIGHTER PLANE SHOWING THE
ENGINE
8/2/2019 52998035 Stealth Technology
14/30
STEALTH AIRCRAFT WITHOUT
EXHAUST
EXHAUST PLUME OF A NORMAL PLANE
8/2/2019 52998035 Stealth Technology
15/30
Sensors
8/2/2019 52998035 Stealth Technology
16/30
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.
8/2/2019 52998035 Stealth Technology
17/30
COCKPIT
8/2/2019 52998035 Stealth Technology
18/30
The cockpit has Head-up display.
equipped with large video monitors.
The cockpit has a full-colour moving map.
HEAD UP DISPLAY
8/2/2019 52998035 Stealth Technology
19/30
FLIGHTMANAGEMENT
8/2/2019 52998035 Stealth Technology
20/30
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.
8/2/2019 52998035 Stealth Technology
21/30
8/2/2019 52998035 Stealth Technology
22/30
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.
8/2/2019 52998035 Stealth Technology
23/30
B-2 STEALTH BOMBER
8/2/2019 52998035 Stealth Technology
24/30
In this stealth the
aircraft injects a
stream of ionized
gas which envelopes
the aircraft due towhich most of the
radar wave are
observe this make
the aircraft
completely invisible
PLASMA
STEALTH
8/2/2019 52998035 Stealth Technology
25/30
ADVANTAGE
Stealth aircraft are invisable to radar.
Develop the military secretes.
Saving military budget.
8/2/2019 52998035 Stealth Technology
26/30
Stealth technology has its own disadvantages like othertechnologies.
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
8/2/2019 52998035 Stealth Technology
27/30
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.
8/2/2019 52998035 Stealth Technology
28/30
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
8/2/2019 52998035 Stealth Technology
29/30
ANY QUERIES
8/2/2019 52998035 Stealth Technology
30/30
THANK YOU