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HOW USA PLANS TO DEFEAT RUSSIAN & CHINESE STEALTH FIGHTERS? : TOP 5 FACTS - YouTube
Channel: Defense Updates
[16]
Unlike a decade ago, United States is no longer
the sole designer of stealth fighters. Russia
[23]
and China has taken concrete steps in this
direction.
[27]
Chinese Chengdu J-20 has some stealth features,
and Shenyang J-31 has been designed from grounds
[33]
up keeping in mind stealth characteristics.
Russian PAK F A is considered to be most potent
[39]
competitor against F 35 and F 22 Raptor. The
aircraft will be the first operational aircraft
[46]
in Russian service to use stealth technology.
[50]
On the other side of the table, the Russian
S 400 and upcoming S 500 Air Defense System
[56]
is known to have radars cable of detecting
stealthy aircrafts.
[60]
In this video, Defense Updates provides viewers
with an insight on how USA intends to nullify
[67]
the Russian and Chinese stealth technology.
[78]
It is the physics of longer wavelength and
resonance that enables Very High Frequency
[82]
(VHF) and Ultra High Frequency (UHF) radar
to detect stealth aircraft.
[87]
UHF-band radars operate at frequencies between
300MHz and 1GHz, which results in wavelengths
[94]
that are between 10 centimeters and one meter
long. Typically, due to the physical characteristics
[101]
of fighter-sized stealth aircraft, they must
be optimized to defeat higher frequencies
[106]
in the K a, K u, X, C and parts of the S-bands.
There is a resonance effect that occurs when
[114]
a feature on an aircraft—such as a tail-fin
tip— is less than eight times the size of
[119]
a particular frequency wavelength. That omnidirectional
resonance effect produces a “step change”
[126]
in an aircraft’s radar cross-section.
Effectively what that means is that small
[131]
stealth aircraft that do not have the size
or weight allowances for two feet or more
[136]
of radar absorbent material coatings on every
surface, are forced to make trades as to which
[142]
frequency bands they are optimized for.
[153]
Till now VHF & UHF radars could not generate
a “weapons quality” track—or in other
[159]
words, are unable to guide a missile onto
a target. Poor resolution in angle and range,
[165]
has historically prevented these radars from
providing accurate targeting and fire control.
[171]
However, electronic scanning and new signal
[174]
processing techniques have mitigated those
shortcomings to an extent. And there are other
[179]
techniques in development, such as linking
multiple low-frequency radars via high-speed
[185]
datalinks, which is enabling those radars
to generate weapons quality tracks.
[191]
The Lockheed Martin E-2D Advanced Hawkeye’s
central feature is the APY-9 UHF-band radar.
[198]
The radar is powerful hybrid mechanical/electronically
scanned UHF-band sensor.
[212]
The radar will be able to tie into the U.S.
Navy’s state-of-the-art Naval Integrated
[218]
Fire Control—Counter Air (NIFC-CA) battle
network and will operate in two ways:
[223]
1. From the Air: APY-9 radar would act as
a sensor to cue Raytheon Aim 1 2 0 air-to-air
[231]
missiles for Boeing F 18 Super Hornets and
F 35 fighters via datalink.
[237]
2. From the Sea: The APY-9 would also act
as a sensor to guide Raytheon Standard SM-6
[244]
missiles launched from Aegis cruisers and
destroyers against targets.
[248]
In fact, the US Navy has demonstrated missile
shots using the E-2D’s radar to guide SM-6
[257]
missiles against over-the-horizon targets—which
by definition means the APY-9 is generating
[263]
a weapons quality track.
[271]
The technology would be able to detect aircrafts
like the Chengdu J-20, Shenyang J-31, Sukhoi
[278]
PAK-F A, and indeed the United States’ own
Lockheed Martin F-22 Raptor and tri-service
[284]
F-35 Joint Strike Fighter. Only very large
stealth aircraft without protruding surfaces
[291]
— like the Northrop Grumman B-2 Spirit or
the forthcoming Long Range Strike-Bomber — will
[297]
be able to defeat this radar. USA having been
in the forefront of stealth technology implementation,
[303]
is continuing to work towards maintaining
an edge over its rivals in this technology.
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