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E-3 insufficient for timely detection of J-20: Pacific Air Forces chief

LOL The creator means USA has more experience than China in term of Stealth jet and still has that advantage, you're quite new in field and DSI is not the only tech to hide engine fan blade to radar their quite few which can hide engine fan blade to radar, S AIR INTAKE IS ONE OF THEM,

So why you assume that Designer of F-35 neglect belly of F-35 and design it unstealthily

You're fanboy iam not
Do you even know how to really make a real stealthy plane? You do whatever, even the smallest detail you can to reduce RCS as low as possible. that is why even landing gear cover are made zig zag shape to reduce any RCS.

F-22 belongs to older design, not that they wouldnt do it with DSI. F-35 having unstealthy belly is a compromised due to too complicated and limited airframe.

Having canard is also a compromise but with careful treatment and alignment , the increase of RCS by canard can be reduced to minimal. Canard instantly increase the angle of attack and is a big asset for improvement of performance for a big plane like J-20.

I am not a fanboy but u are!
 
Do you even know how to really make a real stealthy plane? You do whatever, even the smallest detail you can to reduce RCS as low as possible. that is why even landing gear cover are made zig zag shape to reduce any RCS.

F-22 belongs to older design, not that they wouldnt do it with DSI. F-35 having unstealthy belly is a compromised due to too complicated and limited airframe.

Having canard is also a compromise but with careful treatment and alignment , the increase of RCS by canard can be reduced to minimal. Canard instantly increase the angle of attack and is a big asset for improvement of performance for a big plane like J-20.

I am not a fanboy but u are!
YOU are in no position to question anyone about anything military.


The second prototype, however, was a success, proving for all practical purposes its invisibility to radar. It showed at most a low-intensity, nebulous radar sparkle that was nearly indistinguishable on a radar scope from background noise until the aircraft was well within a ground missile’s minimum launch range. Only the massive airborne antenna of the Boeing E-3 Sentry AWACS (airborne warning and control system) and some ground-based low-frequency and very-high-frequency radars had success detecting it, but because of their large antennas the latter two are unsuitable for battlefield use.​

The 'it' means the F-117. In other words, as I have been saying on this forum yrs ago, we ALREADY know how to discriminate low radar observable bodies. Our AWACS, Air Force and Navy, will pick out China's J-20 if any is in the air.
 
Having canard is also a compromise but with careful treatment and alignment , the increase of RCS by canard can be reduced to minimal. Canard instantly increase the angle of attack and is a big asset for improvement of performance for a big plane like J-20.

I am not a fanboy but u are!
Lol what a fool you're CANARDS are big radiator and only good for head-on Stealth but from above and below they are big reflectors and what about VENTRAL FINS they are also quite big reflector from rear and below and if CANARD that super why you're not using in your upcoming 6th gen jet lol

you're just blind ultra national sh!t who knows nothing about military aviation lol
 
YOU are in no position to question anyone about anything military.


The second prototype, however, was a success, proving for all practical purposes its invisibility to radar. It showed at most a low-intensity, nebulous radar sparkle that was nearly indistinguishable on a radar scope from background noise until the aircraft was well within a ground missile’s minimum launch range. Only the massive airborne antenna of the Boeing E-3 Sentry AWACS (airborne warning and control system) and some ground-based low-frequency and very-high-frequency radars had success detecting it, but because of their large antennas the latter two are unsuitable for battlefield use.​

The 'it' means the F-117. In other words, as I have been saying on this forum yrs ago, we ALREADY know how to discriminate low radar observable bodies. Our AWACS, Air Force and Navy, will pick out China's J-20 if any is in the air.
LOL.. Who are you in what position to tell me? I still want to say and what can you do? Ban me?

Let me repeat, I didnt point a gun and forced what your AIr Chief say those words. It is just an honest assessment from you. He is humble to admit the deficiency. Who are u in position to question his words? Face saving? :lol:

Lol what a fool you're CANARDS are big radiator and only good for head-on Stealth but from above and below they are big reflectors and what about VENTRAL FINS they are also quite big reflector from rear and below and if CANARD that super why you're not using in your upcoming 6th gen jet lol

you're just blind ultra national sh!t who knows nothing about military aviation lol
800px-McDonnell_Douglas_X-36_planform.jpg


Good slap on fanboy like you. Say who's the ultra nationalist frog in the well. :enjoy:

And American are dumb enough to design with canard as based for their stealth plane.
 
Give him some respect he knows better than you because he is professional and you're just a retard fanboy
@waz

Look at these forumer language. Can't out argue someone and decide to go personal. He needs an vacation to learn some manner.
 
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US Air Force (USAF) General Kenneth Wilsbach says that the Boeing E-3 Sentry AWACS fleet is suffering significant obsolescence issues, and that the Boeing F-15EX is ideally suited to conflict in North Asia.


@Han Patriot @LeGenD

Boeing E-3A Sentry is equipped with AN/APY-2 Pulse Doppler radar system which operates in the E/F band range.

This radar system is good enough to detect cruise missiles but its technology is outdated.

Chinese J-20 jet fighter - in its current form - might be an elusive target for AN/APY-2 as noted in the link you shared.

- - -

Northtrop Grunman E-2C Hawkeye is equipped with AN/APS-145 Pulse Doppler radar system operating in UHF band.

This radar system is a leap from AN/APY-2 on many counts.

But Americans have developed something much better:

The Radar

Located inside the 24-foot dorsally-mounted dish is the AN/APS-139/145 UHF-band radar that can track targets from well over 200 miles away. The original Hawkeye mission was Airborne Early Warning (AEW)—an airborne platform that could protect the aircraft carrier and battle group assets from Russian bombers carrying long-range missiles, as well as enemy ships and other threats, which it did well.

To enhance its effectiveness as a battle manager, the Hawkeye’s radar picture can be data-linked to multiple destroyers and cruisers located hundreds of miles away, to create a monstrous, virtually impenetrable air defense posture. When coupled with the highly effective Aegis Combat System’s SPY-1 radars found on guided missile cruisers or destroyers, that posture can extend well over 500 nautical miles.

Via Link 4 and Link 16 data links, that same picture can also be transmitted directly into the cockpit of fighter and attack aircraft. Coordinated air intercepts can be done with literally no verbal communications.


But the radar was challenged in that its UHF frequency ranges were optimized for maritime use and its early mission computers were both heavy and, at least by today’s standards, horrifically obsolete. Thus, it was not the most effective platform to detect low flying threats over land or in a high clutter radar environment.

With new radar, systems, and computers, the new E-2D, however, provides game-changing performance in any environment.


- - -

Northtrop Grunman E-2D Advanced Hawkeye is equipped with state-of-the-art AN/APY-9 HYBRID radar system operating in UHF band.

This radar system is a significant leap from AN/APS-145 on all counts.

According to Northrop Grumman, current mechanically scanned and pure electronically scanned radars have inherent shortcomings that limit their effectiveness and compromise their capabilities. The Advanced Hawkeye’s completely new APY-9 radar merges a traditional mechanically scanned antenna with steerable electronic scanning: Operators get the best of both world (or more accurately, the best of both technologies). Mechanically rotated electronic scan radar provides uniform 360 detection coverage, independent of ownship aircraft orientation to the target. No compromises as seen when integrated fixed radars on commercial aircraft.

The improvements of the APY-9 compared to the E-2C radar (AN-APS-145) are many:
» Increased range
» Enhanced detectability of air targets both over sea and land
» Surface target tracking out of horizon
» Reduction of clutter in coastal area and over land
» Precision tracking of maneuvering targets against ground clutter
» Long range detection of cruise missiles

Northrop Grumman representatives stressed this last point to us: A great deal of energy was focused on detecting cruise missiles, both over sea and land. This was a requirement of the U.S. Navy


The rotodome is designed to spin at three different speeds, completing a full revolution either every 10s, 12s or 15s. The crew also has the option to stop the rotodome. This allows the radar to focus all the energy provided by the E-2D's twin 170 kVa generators, which can each surge to 225 kVa for up to 3h, into a targeted area. Concentrating the beam allows the radar to either find smaller targets closer-in, or pick up larger targets at far greater ranges.

It is this unique combination of mechanical and electronic scanning that allows the E-2D to more than double the range of the previous APS-145 radar on the E-2C. Neither Northrop nor navy officials disclose the range of the APY-9, but it is listed as beyond 300nm (555km) and appears only constrained by the distance to the horizon at the E-2D's mission altitude of 25,000ft.


E2-D-radar.png


E-2D_Advanced_Hawkeye_APY-9_radar_modes.gif


This radar system solved the problem:

The central feature of the Hawkeye is its Lockheed Martin AN/APY-9 UHF-band radar. It is said to able to detect fifth-generation stealth aircraft, including China's Chengdu J-20 and Shenyang J-31, Russia's Sukhoi PAK-FA and the U.S.'s own F-22 Raptor and F -35 Joint Strike Fighter.



- - - -

F-15EX Eagle II is ideally suited for conflict in North Africa? Please take this claim with a grain of salt. Americans are known to overblow external threat situation when they are seeking funding.

I would focus on independent lines-of-evidence.

F-15EX is equipped with some of the most advanced and powerful sensor systems in the world.

“We have the most powerful mission computer processor [in the Advanced Display Core Processor (ADCP) II] in any fighter on the planet today, with room for growth. We have the most powerful radar [Raytheon AN/APG-82(V)1 Active Electronically Scanned Array] that we have ever seen in a fighter. Then you add EPAWSS, which is a brand new electronic warfare capability, which is really what the community needed. You've got stations 1 and 9 [allowing a total of] 12 missiles now. I've flown it with 12 missiles before and quite frankly I felt like King Kong in the jet. How often we will train like that I don't know, but having that capability if we need it with a 4-ship going out with 48 missiles is unbelievable!” - Boeing’s F-15 Chief Test Pilot Matt “Phat” Giese


The jet fighter's ace is its top-of-the-line EW capabilities:

BAE Systems’ AN/ALQ-250 Eagle Passive Active Warning Survivability System (EPAWSS) protects U.S. Air Force F-15s with digital electronic warfare technology to maximize mission effectiveness and survivability in highly contested environments.

The EPAWSS system collects and processes electromagnetic energy to instantaneously capture a 360-degree aerial field of view to provide a comprehensive picture of the battlespace. This gives the pilot maximum situational awareness, helping to identify, monitor, analyze, and rapidly respond to potential threats. EPAWSS has a broad instantaneous bandwidth and high speed scanning capability to detect all RF threat classes including low probability of intercept and modern agile threats. To counter threats, the EPAWSS electronic countermeasure technique toolbox leverages many years of proven techniques and can be programmed to defeat legacy and modern threats.


It is important to understand how F-15EX can make difference in a network-centric environment - what type of battlefield effects it can produce in a network-centric environment.

This should raise eyebrows:


F-15EX made it possible for the F-35A to minimize its footprint from a distance (sensor node role). There was no need for the F-35A to use its radar system to engage desired target(s).

Therefore.
 
Boeing E-3A Sentry is equipped with AN/APY-2 Pulse Doppler radar system which operates in the E/F band range.

This radar system is good enough to detect cruise missiles but its technology is outdated.

Chinese J-20 jet fighter - in its current form - might be an elusive target for AN/APY-2 as noted in the link you shared.

- - -

Northtrop Grunman E-2C Hawkeye is equipped with AN/APS-145 Pulse Doppler radar system operating in UHF band.

This radar system is a leap from AN/APY-2 on many counts.

But Americans have developed something much better:




- - -

Northtrop Grunman E-2D Advanced Hawkeye is equipped with state-of-the-art AN/APY-9 HYBRID radar system operating in UHF band.

This radar system is a significant leap from AN/APS-145 on all counts.







E2-D-radar.png


E-2D_Advanced_Hawkeye_APY-9_radar_modes.gif


This radar system solved the problem:





- - - -

F-15EX Eagle II is ideally suited for conflict in North Africa? Please take this claim with a grain of salt. Americans are known to overblow external threat situation when they are seeking funding.

I would focus on independent lines-of-evidence.

F-15EX is equipped with some of the most advanced and powerful sensor systems in the world.




The jet fighter's ace is its top-of-the-line EW capabilities:






It is important to understand how F-15EX can make difference in a network-centric environment - what type of battlefield effects it can produce in a network-centric environment.

This should raise eyebrows:


F-15EX made it possible for the F-35A to minimize its footprint from a distance (sensor node role). There was no need for the F-35A to use its radar system to engage desired target(s).

Therefore.


The B-21 bomber will also be the first ELO (extremely low observable) class aircraft ever designed. The B-21 bombers public rollout is also thought to be imminent in the next 1-2 months.
 
800px-McDonnell_Douglas_X-36_planform.jpg


Good slap on fanboy like you. Say who's the ultra nationalist frog in the well. :enjoy:

And American are dumb enough to design with canard as based for their stealth plane.

You do know the X-36 is a small sub scale radio controlled toy plane, designed by NASA for hyper maneuverability studies.

354757main_EC97-44165-149_full.jpg
 
LOL.. Who are you in what position to tell me?
Someone who is smarter than you and have relevant military experience.

And American are dumb enough to design with canard as based for their stealth plane.
And I pointed this out yrs ago but it is clear that you ain't gots the brains to grasp.

So for the benefits of the readers out there...

In designing a low radar observable body, there are three rules of CONTROL of:
  1. Quantity of radiators
  2. Array of radiators
  3. Modes of radiation
The aircraft itself is a radiator. When it reflects or uses its radio transmissions, it became a radiator. Everything on its body are radiators and the largest are the flight controls structures. The three rules are not so much rules that your design violate but rather that to what degrees of OBEDIENCE of your design to the three rules.

Rule One: Control of QUANTITY of radiators.

A 'canard' is a flight controls structure in a certain position on the body and in relation to other flight controls structures. A label does nothing in regards to radar cross section (RCS). The J-20 have 8 major flight controls structures. The F-22 have six. This make the J-20 less obedient than the F-22 in regards to rule 1. The X-36 have canards but the design have no yaw axis flight controls structures, this make the J-20 less obedient than the X-36 to rule 1 even though both designs have canards.

Another misleading argument is that 'bumpy' underside of the F-35 that supposedly made the F-35's RCS higher (or worse) than the J-20. But they failed to consider the first 'stealth' platform: F-117.

Rule Two: Control of ARRAY of radiators.

YdZdIFi.jpg


The F-117 have those 'ridges' but they fall under rule 2: Control of ARRAY of radiators. Each ridge is an exit point for surface traveling wave making each ridge a radiator. But all of them were designed -- arrayed -- in ways that minimizes reflections to the seeking radar. In other words, all these ridges are obedient to rule 2. Further, the F-117 have four flight controls structures making the F-117 more obedient than the J-20, F-22, and F-35, to rule 1. This is why the F-117 RCS is still secret and it is still flying to provide R/D purposes.

Rule Three: Control of MODES of radiation.

Absorbers minimize or even eliminate radiation. Absorbers can be applied to the surfaces or embedded into the materials, aka 'composites'. The body do not have to be covered/embedded with absorbers. Strategically placed, absorbers will influence rule 2 and allows some flexibility in designing other features that will have no effects on final RCS.

Any more in-depth of these three rules will cross into the 'classified' information realm. But Rule One, control of QUANTITY of radiators, is the first rule any 'stealth' design must consider. The greater the protrusion into the radar beam the less the degrees of control of rule 3 but the smaller the flight controls structure, the less maneuverable the design which leads back to the original design itself. The J-20's design require canards which made the J-20 less obedient to rule one. There is no way around this. Without the canards, it would not be a J-20 but something else completely. This is why internet Chinese are so sensitive about the J-20's canards and continues to mislead the public by dragging in experimental US designs.

For absolute proof, not merely evidence, of the validity of the three rules, the sphere is the radar calibration body because the sphere is the most obedient body to the three rules. The Lincoln Calibration Sphere is in orbit and serves as a test body for any surface radar.

 
Then you better invade now before that gap period passes.
The gap is only going to widen further. J-20s and Type 055s are going to be cranked out like sausages, and they'll be soon joined by H-20 stealth bombers and Type 09-V SSNs. In a couple of decades China is going to pick up America's entire Pacific presence and dump it in California like a sack of potatoes.
the US AESA technology is still the world's first class which is no doubt
LOL citation needed.
 
The gap is only going to widen further. J-20s and Type 055s are going to be cranked out like sausages, and they'll be soon joined by H-20 stealth bombers and Type 09-V SSNs. In a couple of decades China is going to pick up America's entire Pacific presence and dump it in California like a sack of potatoes.

LOL citation needed.
The Columbia class SSBN are already under construction; an order of magnitude more quiet then the Ohios. Where do the Type 096 stand and how to they compare to the Ohios or the Best Russian SSBN? Do they use a pump jet and all electric propulsion? China might have advanced but so has the US. Best to stay humble, this US-China Cold War is going to be a long one. Economics not military might will determine the outcome of this conflict. Wasting too many resources on weapons is part of what dragged the Soviet economy down.
 
Someone who is smarter than you and have relevant military experience.


And I pointed this out yrs ago but it is clear that you ain't gots the brains to grasp.

So for the benefits of the readers out there...

In designing a low radar observable body, there are three rules of CONTROL of:
  1. Quantity of radiators
  2. Array of radiators
  3. Modes of radiation
The aircraft itself is a radiator. When it reflects or uses its radio transmissions, it became a radiator. Everything on its body are radiators and the largest are the flight controls structures. The three rules are not so much rules that your design violate but rather that to what degrees of OBEDIENCE of your design to the three rules.

Rule One: Control of QUANTITY of radiators.

A 'canard' is a flight controls structure in a certain position on the body and in relation to other flight controls structures. A label does nothing in regards to radar cross section (RCS). The J-20 have 8 major flight controls structures. The F-22 have six. This make the J-20 less obedient than the F-22 in regards to rule 1. The X-36 have canards but the design have no yaw axis flight controls structures, this make the J-20 less obedient than the X-36 to rule 1 even though both designs have canards.

Another misleading argument is that 'bumpy' underside of the F-35 that supposedly made the F-35's RCS higher (or worse) than the J-20. But they failed to consider the first 'stealth' platform: F-117.

Rule Two: Control of ARRAY of radiators.

YdZdIFi.jpg


The F-117 have those 'ridges' but they fall under rule 2: Control of ARRAY of radiators. Each ridge is an exit point for surface traveling wave making each ridge a radiator. But all of them were designed -- arrayed -- in ways that minimizes reflections to the seeking radar. In other words, all these ridges are obedient to rule 2. Further, the F-117 have four flight controls structures making the F-117 more obedient than the J-20, F-22, and F-35, to rule 1. This is why the F-117 RCS is still secret and it is still flying to provide R/D purposes.

Rule Three: Control of MODES of radiation.

Absorbers minimize or even eliminate radiation. Absorbers can be applied to the surfaces or embedded into the materials, aka 'composites'. The body do not have to be covered/embedded with absorbers. Strategically placed, absorbers will influence rule 2 and allows some flexibility in designing other features that will have no effects on final RCS.

Any more in-depth of these three rules will cross into the 'classified' information realm. But Rule One, control of QUANTITY of radiators, is the first rule any 'stealth' design must consider. The greater the protrusion into the radar beam the less the degrees of control of rule 3 but the smaller the flight controls structure, the less maneuverable the design which leads back to the original design itself. The J-20's design require canards which made the J-20 less obedient to rule one. There is no way around this. Without the canards, it would not be a J-20 but something else completely. This is why internet Chinese are so sensitive about the J-20's canards and continues to mislead the public by dragging in experimental US designs.

For absolute proof, not merely evidence, of the validity of the three rules, the sphere is the radar calibration body because the sphere is the most obedient body to the three rules. The Lincoln Calibration Sphere is in orbit and serves as a test body for any surface radar.

When did you ever display any smartness over me? For someone so boastful and arrogant. You need to be wary of such conman tactics.

I think you all forget one point, That is the treatment of coating and reduction of radio radiation. You all can model a J-20 and try find out it's RCS in a simulation but you all wouldn't know what kind of coating J-20 used and how much percentage of reduction in help in RCS.

China experiment one of their advance coating on an old F-7 (mig-21) and see how much it helps in RCS reduction. The result is better than expected. Of cos, the Chinese will never disclosed the result of report.


And precisely the one why we come to this article about US air chief lament about incapable of USAF AWACS. More or less tells you the coating on J-20 is successful. It's is not maintenance intensive as we seen in F-22 which require air con hangar and extensive recoat in order to achieve combat readiness.

The gap is only going to widen further. J-20s and Type 055s are going to be cranked out like sausages, and they'll be soon joined by H-20 stealth bombers and Type 09-V SSNs. In a couple of decades China is going to pick up America's entire Pacific presence and dump it in California like a sack of potatoes.

LOL citation needed.

Don't worry, they will pull out those self praising manipulate western article to suit their agenda.
 

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