it contains basic intro to RAM and a little history of Stealth tech

1. Group Members
• Hamza Ijaz 2014-IM-36
• Shoaib Muzaffer 2014-IM-37
• Atif Qayyum Khan 2014-IM-38
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2. Role of Composits In
Stealth Technology
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3. Stealth Technology
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Low observable technology
Used in military aviation
Reduces detection range of an air
craft
Partial indivisibility to radar and
other detection
Without stealth

4. (History)
The first “STEALTH” ships have been
developed in Germany during the last years of
WWII.
This technique has also been used in aircrafts.
Later Americans worked on this
technology and succeeded.
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5. • Radar-absorbent material, or RAM, is a class
of materials used in stealth technology to
disguise a vehicle or structure from radar
detection.
• A common misunderstanding is that RAM
makes an object invisible to radar.
What is Radar Absorbing material orWhat is Radar Absorbing material or
RAM (stealth)?RAM (stealth)?
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6. Function & Working of RAM (stealth)Function & Working of RAM (stealth)
• Nano-structural composite material, absorbing
without reflection radar wave.
• Foam absorber
• Iron ball coating
• Rubber composite
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7. Foam Absorber
• Fireproofed urethane foam loaded with
conductive carbon black
• [carbonyl iron spherical particles, and/or
crystalline graphite particles] in mixtures
between 0.05% and 0.1% (by weight in
finished product)
Honey comb Square base pyramids 7

8. Iron ball coating
•Tiny spheres coated with carbonyl iron
or ferrite
•contain traces of carbon, oxygen, and
nitrogen
•Grains are embedded in polymer matrix
(epoxy resin)
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9. Iron ball coating(Working)
• Molecular oscillations
• Conversion of Radar energy to heat
energy
• Heat is further dissipated by the plane
surface
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10. F-22 RAPTORF-22 RAPTOR
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11. Rubber composite
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• Graphite embedded in rubber matrix
• Other semiconductor materials can also
be used
• Layered structure
• Efficiency is affected by sea water
• Withstand the water drag force
Mostly used by
submarines

12. Thanks!
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13. References
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1. http://www.totalairdominance.50megs.com/stealth.htm
• 2. http://en.wikipedia.org/wiki/Stealth_technology
• 3. http://en.wikipedia.org/wiki/Radar
• 4. http://en.wikipedia.org/wiki/Stealth_ship
• 5. http://www.resonancepub.com/images/stealth_ship.gif
• 6. http://images.google.co.in/images
• 7. http://www.airplanedesign.info/51.htm
• 8. http://www.military-heat.com/43/russian-plasma-
stealth-fighters/
Date of Access : 20-NOV-2016