Stealth Technology

STEALTH TECHNOLOGY:
Into The Depths
By: Heather A Brooks

What Is Stealth Technology?
Scientifically known as low observatory
Used in Military aviation
Reduces detection range of an aircraft
http://www.airforce-technology.com/projects/f117/images/nhawk11.jpg
Similar to camouflage tactics used by soldiers
Partial indivisibility to radar and other detection
(“Stealth Technology”, 2008), (Kumar)

How Does Stealth Work?
Uses the principle of reflection and absorption as well as redirection.
Interferes with communication
2 structure surface designs of stealth aircrafts
RAS, RAM
(Kumar)

RAS: Radar Absorbent Surfaces
Deflects Incoming Radar
Reduces detection range
Structures include wings, refueling boom
Works due to angles of structures and how they are placed.
Should have no 90 degree angles
Uses reflection
F-117 “Night Hawk”
(Kumar)
http://www.aerospaceweb.org/aircraft/bomber/f117/f117_03.jpg

RAM: Radar Absorbent Material
Absorbs radar signals
Depends on material of the surfaces
Believed to be silicon based organic compound
Gives the aircraft appearance to be the size of a bird
B-2 Stealth Bomber
http://www.aerospaceweb.org/aircraft/bomber/b2/b2_04.jpg
(Sweetman)

IR: Infrared
Another Important Factor that influences stealth
Signature given out by aircraft
Reduces visibility in thermal imaging systems
Depends on where engine in placed
Built to have very low IR
Top secret technology
(Kumar)

Infrared Aircrafts
http://www.aerospaceweb.org/aircraft/bomber/b2/b2_04.jpg
http://www.commutefaster.com/F-22.jpg
Left: B-2 Right: F-22 Center: JSF
(Kumar)
http://www.defenseindustrydaily.com/images/AIR_F-35_JSF_On_Tarmac_lg.jpg

Plasma Stealth
“Active Stealth”
Inject Stream of Plasma
Covers entire body of aircraft
Absorbs most electromagnetic energy of radar
First developed by Russians
Soviet Russian Space Program
http://servv89pn0aj.sn.sourcedns.com/~gbpprorg/mil/radar/B2_Conden_1.jpg
(Kumar)

Methods of Avoiding Detection
Carry Weapons Internally
Turning Radar off
Use wingman
IFDL: In Flight Data Link
(Day, 2001)

Detection Methods
Triangulate location with a network of radar systems
Method of microwaves similar to cell phone towers
(Kumar)

Disadvantages of Stealth Technology
Cannot fly fast
Cannot Maneuver
Reduces amount of payload
Cost
Equivalent to its own weight in gold
(Kumar)

COST
$2 Billion
$70 Million
$100 Million
(Kumar)

Limitations
Sensors to locate targets size
Attack on ground targets
Airborne laser radar in poor weather
Vulnerability to visual detection: 10 miles
Special maintenance
http://www.groovythemes.com/aviation/stealth_fighter-med.jpg
(Sweetman)

History of Stealth Technology
Invented by First caveman and leaves
Soldiers and trees
Submarines and waves, coatings
Aircrafts and radar
Cont.
(Day, 2001)

Applying Stealth Technology to airplanes in 1940’s
Began designs in 1950’s
1970’s Mathematician developed Echo 1
1980’s-1990’s Computer availability of stealth techniques
Cont.
(Day, 2001)

First Stealth Aircraft F-117
Lockheed Martin
ATF Contest
Fought for multi-billion contract
JSF Competition
Second World War used tin and aluminum
Russia, India, China competitors
http://www.wingweb.co.uk/wingweb/img/600-F-117A_Stealth_fighter_37th_Tonopah.jpg
F-117 Stealth Fighters
(Kumar)

F-117 Stealth Aircraft
5 were tested between 1981-1982
Squadron declared operational in 1983
Unveiled from top secrecy in 1989
Became famous in 1991 Persian Gulf War
USA F-117
http://www.aviationspectator.com/files/images/F-117A-Nighthawk-stealth-fighter-70.jpg
1999 shot down by Russian missile
Most famous stealth aircraft
59 built by Lockheed for Air Force
(Day, 2001), (“Stealth Technology”, 2008)

References
Day, D.A. (2001). Stealth aircraft. U.S. Centennial of Flight Commission, Retrieved from http://centennialofflight.gov/essay/Evolution_of_Technology/Ste alth_aircraft/Tech3.htm
Day, D.A. (2001). Stealth Technology. U.S. Centennial of Flight Commission, Retrieved from http://centennialofflight.gov/essay/Evolution_of_Technology/Ste alth_aircraft/Tech18.htm
Kumar, A.G. (n.d.). What is Stealth technology?. Total Air Dominance, Retrieved from http://totalairdominance.50megs.com/articles/stealth.htm
Stealth Technology. (2008). The Columbia encyclopedia. Retrieved (2010, April 05) from http://encyclopedia.com/doc/1E1-stealtht.html
Sweetman, B. (n.d.). VI- Stealth Aircraft: Eagles Among Sparrows?. Fas.org. Retrieved (2010, April 06) from http://www.fas.org/spp/aircraft/part06.htm

http://hossamozein.blogspot.com	834
http://hossamozein.blogspot.in	106
http://hossamozein.blogspot.co.uk	58
http://hossamozein.blogspot.ca	49
http://hossamozein.blogspot.com.au	41
http://www.slideshare.net	29
http://hossamozein.blogspot.it	27
http://hossamozein.blogspot.fr	21
http://hossamozein.blogspot.sg	18
http://hossamozein.blogspot.kr	16
http://translate.googleusercontent.com	13
http://hossamozein.blogspot.com.br	12
http://hossamozein.blogspot.hk	10
http://hossamozein.blogspot.co.nz	10
http://hossamozein.blogspot.com.es	9
http://hossamozein.blogspot.jp	9
http://hossamozein.blogspot.co.il	8
http://hossamozein.blogspot.com.ar	8
http://hossamozein.blogspot.de	8
http://hossamozein.blogspot.tw	7
http://hossamozein.blogspot.ru	6
http://hossamozein.blogspot.nl	6
http://hossamozein.blogspot.ie	6
http://hossamozein.blogspot.cz	5
http://hossamozein.blogspot.pt	5
http://hossamozein.blogspot.sk	4
http://hossamozein.blogspot.ch	4
http://hossamozein.blogspot.mx	4
http://hossamozein.blogspot.se	4
http://hossamozein.blogspot.gr	4
http://hossamozein.blogspot.fi	2
http://hossamozein.blogspot.ro	2
http://hossamozein.blogspot.hu	1
http://207.46.192.232	1

Stealth Technology

by Heather Brooks

Accessibility

Upload Details

Usage Rights

34 Embeds 1,347

Statistics

Stealth Technology Presentation Transcript