Aircraft Stealth Technology is the tech part of an airplane most students get curious about. Stealth is the technology with help of which we can hide an airplane from enemy's eye and radar both. The scientific name for stealth technology is low observatory, which incorporates several concepts into one technology. Stealth is nothing new, it has been used since caveman years with covering up in leaves, but it is now used in military aviation. Stealth does not always refer to just radar there are other forms of detections such as heat signatures. check other aspect by <a>read more</a>

1. -Defence in Depth

2. 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 invisibility to
radar and other
detection

3. How Does Stealth Work?
Uses the principle of reflection and absorption as well as
scattering.

4. Types of Detection
 RADAR Cross Section
 Laser Cross Section
 Magnetic Signature
 Acoustic Signature
 Visible Signature
 Infrared Signature

5. Approaches to Stealth
 Reduction of RADAR Cross Section(RCS)
 Usage of RADAR Absorbent Materials(RAM) and
RADAR Absorbent Surfaces(RAS)

6. Reduction of RCS
 Avoiding flat or re-entrant surfaces.
 Bury the engines inside the body of the craft instead of
mounting them on the wings.
 Usage of a configuration which minimizes gaps and holes.
 Give the inlet duct an S-shape

7. RADAR Absorbent Material
 RAM is usually a dielectric material such as carbon or
magnetic ferrite.

8. Limitations of RAM
 Absorbs only a portion of the incident radiation.
 Effective only at certain frequencies and angle of
incidence.
 Thickness and weight increases with effectiveness of
RAM.
 Sensitive to adverse weather(rain)

9. RADAR Absorbing Substances
 A radiation absorbing honeycomb structure usually
incorporated with the skin of the aircraft.
Transparent surface
Reflective surface
Honeycomb structure

10. Limitations of Stealth
 Low speed and maneuverability.
 Reduction in the capacity to carry payload.
 High cost
-B2 Bomber 2 billion USD
-F117-A 70 million USD
-F22 100 million USD

11. Counter Stealth
 LIDAR- Light Detection And Ranging
 Quantum RADAR

12. Read more