PLA AEW&C, SIGINT, EW and MPA thread

BoraTas

Major
Registered Member
IMO the thing is that Y-9 is a limited platform with old engines, there's a good reason why PLAAF isn't procuring much Y-9s. Optimal KJ-500 replacement is a C919 based AEWC same with KQ-200 replacement(IMO Y-9 is decent for this job anyways as ASW work doesn't need nearly as long of a endurance as AEWC). Right now KJ-500 is getting old as it's still based on late 2000s technology, newer AEWC like the E-7 exceeds it in capability and PLAAF probably isn't going to go all KJ-3000 either so IMO a replacement is needed right now
The ASW mission requires more endurance. Effective ASW requires keeping the pressure on 7/24 on distant waters. AEW only needs to be on air during an air operation. If AEW is on the air for defensive purposes it stays near the airfield.
 

Tomboy

Junior Member
Registered Member
i dont really follow space/satellites. But how far have they come to now? Can they see through cloud layers?
High resolution SAR satellite can see all but the most extreme weather condition clearly.
The ASW mission requires more endurance. Effective ASW requires keeping the pressure on 7/24 on distant waters. AEW only needs to be on air during an air operation. If AEW is on the air for defensive purposes it stays near the airfield.
From the way I see it, the most plausible conflict is in the westpac where Chinese AEWC will need to lotter near to stay relevant to the war effort which definitely requires range and endurance as well. I doubt China will resort to being defensive around the mainland unless something very wrong has happened.
 

BoraTas

Major
Registered Member
High resolution SAR satellite can see all but the most extreme weather condition clearly.

From the way I see it, the most plausible conflict is in the westpac where Chinese AEWC will need to lotter near to stay relevant to the war effort which definitely requires range and endurance as well. I doubt China will resort to being defensive around the mainland unless something very wrong has happened.
If the range and endurance are very important then turboprops beat turbofans for similar sized aircraft. The Y-30 will likely beat the C-919 in these two. I expect it to spawn ASW variants. For AEW the C-919 would be preferable because of other reasons. But that likely won't happen. The C-919 has foreign parts and China is seemingly keeping the project strictly civilian.
 

GiantPanda

Junior Member
Registered Member
Except the system is pointless if it can be shot down by long range missiles.
The KJ-500 probably has enough power but I doubt this is the case for the E-2D.

Exactly. The Y-9 is a pretty good platform combining loiter time, cost of operation and power.

And that's why China has built well over 60 (KJ-500/200) and in mass production mode going forward where we could end up with well over 100. Most air forces literally only a handful of AEW. Only the USAF operates anywhere close to the numbers that China does. But the US had built the majority of theirs 30 years ago (last E-3 built in 1990s) while China had basically caught in the span of the last decade.

Obviously, you can always update and get better with the platform and thus some discussion with the Y-30 in the PLAAF and the USAF needing to retire and, initially, wanted update to the E-7 (based on the 737.)

But the serious plan by the DOD to now switch over to the E-2 signifies how good China decision was to use the Y-8/Y-9. It is mainly a cost issue but includes an operational one as well. Not only is a commercial jet based aircraft more expensive to build and more expensive to operate but it requires a long runway too.

The KJ-500 would have major advantages over the E-2 in range, loiter, radome size and power. There would always be need for high capacity/high speed/high altitude jet AEW like the KJ-2000/3000. But it is good to have the ubiquitous availability of the KJ-500/700 that very few (or maybe practically no other) air forces can afford.
 

ACuriousPLAFan

Brigadier
Registered Member
And that's why China has built well over 60 (KJ-500/200) and in mass production mode going forward where we could end up with well over 100. Most air forces literally only a handful of AEW. Only the USAF operates anywhere close to the numbers that China does. But the US had built the majority of theirs 30 years ago (last E-3 built in 1990s) while China had basically caught in the span of the last decade.

Just a slight correction.

The majority of the AEW&C fleet of the US are actually carrier-based E-2s operated by the USN. In fact, only a handful of E-3s (21x in mid-2024) are being operated by the USAF, and until the E-7 arrives (which its fate is currently in a toss-up) - That's pretty much it.

So, China's actually the country with the largest fleet of land-based AEW&C aircrafts in the world, and most of them (KJ-500 and KJ-700) are in the similar category as the Boeing 737-800-based E-7.
 

Gloire_bb

Major
Registered Member
The KJ-500 probably has enough power but I doubt this is the case for the E-2D.
Different band, it's just a very different system in its design purpose.
Numbers are provided by WZ-9
For (likely) lower band multi statics and overall stealth detection.

Up to debate to which degree they can work by themselves, especially against small LO targets overland.

Which is rapidly turning from "a" concern to "the" concern.

I'd personally consider US measure short-sighted, and explainable only by budget realities.
 
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