Aircraft stealth technology discussed
12
Aircraft Stealth Technology -Defence in Depth
-
Upload
ashish-joshi -
Category
Education
-
view
796 -
download
5
description
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 read more
Transcript of Aircraft stealth technology discussed
Aircraft Stealth Technology -Defence in Depth
What Is Stealth Technology?Scientifically known
as low observatoryUsed in Military
aviationReduces detection
range of an aircraftSimilar to
camouflage tactics used by soldiers
Partial invisibility to radar and other detection
http://www.airforce-technology.com/projects/f117/images/nhawk11.jpg
How Does Stealth Work? Uses the principle of reflection and absorption as well as scattering.
Types of DetectionRADAR Cross SectionLaser Cross SectionMagnetic SignatureAcoustic SignatureVisible SignatureInfrared Signature
Approaches to StealthReduction of RADAR Cross Section(RCS)Usage of RADAR Absorbent Materials(RAM)
and RADAR Absorbent Surfaces(RAS)
Reduction of RCSAvoiding 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
RADAR Absorbent MaterialRAM is usually a dielectric material such as
carbon or magnetic ferrite.
Limitations of RAMAbsorbs 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)
RADAR Absorbing SubstancesA radiation absorbing honeycomb structure
usually incorporated with the skin of the aircraft.
Transparent surface
Reflective surface
Honeycomb structure
Limitations of StealthLow 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
Counter StealthLIDAR- Light Detection And RangingQuantum RADAR
