China Flanker Thread II

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Deino

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The AESA will be under performing as it is smaller to fit the J-10's nose. You have to scale up the radar, increase the size of the array to fill the J-11's nose diameter. In so doing increase the number of elements in the array which increases both its power, transmission and reception gain.


That'S a typo ... I meant J-16
 

foxmulder

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Single vs twin seat fighters isn’t nearly as static a choice as it might seem. While it is true that the majority of air superiority fighters have been single seater, there are also notable exceptions, with the F14, F4 and Su30 being prime examples.

The F4 and F14 cases are essentially interesting because for both, the second seater was added in response to the changing nature of air combat, and specifically relates to additional new capabilities brought on by brand new technology (BVR AAM and EW). As technology advanced, automation caught up allowing single seat fighters to perform similar roles, but that took time.

In terms of drone air to air warfare, I would say we are at a similar stage of development as the first BVRAAMs were. It is a technology that is only just becoming potentially operationally viable, but still some way off from being automated to a point which a single pilot could easily take on the additional workload of managing AA drones on top of his core duties of piloting the plane.

In 10-20 years time, AI might have advance enough where an AA drone can function much like a human wingman today, in which case the need for a second seater would be diminished, but in the meantime, there is a strong argument for adding a second seater if that means you gain the ability to use drones practically in the AA role.

Su-30 was not an air dom fighter. It was the long range interceptor version which become multirole for export.

F-14 was an interceptor developed for Navy with very long range missiles like Mig-31 was (exactly what you described in the 2nd paragraph).

F-4, similar to F-14, was long range interceptor for Navy. Later, USAF bought it too but didn't repeat the same "mistake" again :)

About AI and drones, I agree with you :)



As a side note, regarding the production line limitations, as far as I know J-11B, J-16 and J-15 are all in production right now. Is the J-11B production really stopped?
 

Deino

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As a side note, regarding the production line limitations, as far as I know J-11B, J-16 and J-15 are all in production right now. Is the J-11B production really stopped?


From my understanding YES, AFAIK production of the J-11B ended after Batch 07. We saw these birds first in September 2017 and so I think it ended somewhere in 2018. Today I think only J-15 & J-16 are in production ... at best additional J-11BS.
 

FishWings

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J-16s are not used for air dom roles
I see what you are saying about advantages of single seat fighters vs tandem seat fighters, but I cannot see why the J-16 would not be used for this role. The J-16's weapon suite screams 'air dom' more than anything else does in PLA inventory: 30mm autocannon, PL-10, PL-12, PL-15, and PL-20. That is dominance across the entire spectrum against all sorts of aerial targets, at all sorts of ranges. True, air-dominance/superiority might not be its only role or even its main role, but if the job specifically requires a plane to take & maintain control over enemy airspace, the J-16 absolutely can and will be used for precisely this job as there is arguably not another aerial asset in the PLAAF inventory that can do this job better than the J-16. The only possible exception is the J-20 and even then the J-16 would still have some key advantages over it.
 

Blitzo

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The Su-30MKK was intended as an airspace defender that more importantly has the capability to deploy precision guided munitions (something the J-11A/Su-27SK couldn't do). Alas the role of the backseat WSO to work the various advanced laser designator and TV camera pods so that the front-seater can focus on piloting the plane to drop said munitions all while dodging missiles, surface threats, or FOD debris from bombing runs. Air-to-air capability is given to both the Su-30 and the indigenized J-16 so that they can fly deep into enemy territory to strike targets without the need of another fighter to help fly escort, which the JH-7 would need if it had to strike targets deep in enemy territory. I'm not saying the MKK or the J-16 are incapable of air superiority, I'm saying that strike interdiction should be it's bread and butter.

Between advancements in laser gyro technology as well as terrain following radar, and the availability/integration of BeiDou satellite navigation into PLA aircraft, the navigation responsibilities of the back-seater are gradually diminishing. I agree that a Su-30 or J-16 conducting a Forward Air Controller or reconnaissance mission would benefit a lot with a WSO, but purely from an air-to-air standpoint you don't need a back seater to operate an AESA radar, sensor fusion, or datalink - all of that is automated, and quite frankly does a better job than a human could. Striking targets on the other hand isn't always as straight forward as tracking multiple bogies on a radar screen. It often requires human intellect/ingenuity/problem-solving, which is something I don't think automation can replace quite yet. That's why the F-15E and the J-16 still have back-seaters.

Your thinking regarding the role of the second pilot (WSO/copilot) is correct for traditional, yesteryear needs.

In the past, the role of the WSO certainly was desirable or even essential to enable a robust strike capability to operate the sensors and targeting systems and A2G weapons. However, with modern automation, avionics, and sensors, much of this mission can be done by a single pilot.
Single seat F-16Cs are routinely operated in the A2G strike role, and of course the F-35 only has a single pilot as well and will be one of the most capable strike aircraft in the world.

In more complex air to ground/strike environments, a twin seat strike aircraft may be better than a single seat aircraft (assuming all else is held equal), but the role of the copilot/WSO is hardly essential to the strike mission these days, if you have adequately advanced avionics.

So, going back to J-16, what does this mean for the role of the copilot/WSO for the air superiority role?


Well, I would argue that the traditional conception of what an air superiority aircraft is meant to be is becoming out of date.
There are many people who seem to believe ekeing out additional kinematic performance is desirable, while placing less emphasis on things like EW, combat management, networking, cooperative engagement capability.

IMO, the high end air warfare environment of the near future could be a battlespace of dozens if not hundreds of friendly and hostile aircraft operating in the same theater, all highly networked, all with capable EW systems, with many of the aircraft being forward operating attritible AEW&C, EW, and ELINT capable aircraft (supported by larger, more vulnerable traditional AEW&C, EW and ELINT aircraft at the back), with many of the combat aircraft being stealthy, with all sides deploying highly advanced BVR AAMs with networking capabilities magnitudes superior to what is currently in service....
... and this isn't even including the presence of high end autonomous UAVs/UCAVs that will likely require a robust line of sight control to allow humans to make tactical decisions/commands....
... and this also isn't even including the air warfare contribution of surface ships or ground based air defenses...

In the above combined combat environment, the ideal air superiority fighter should be able to perform the "traditional" air superiority role, but also to operate basically as a miniature AEW&C/battle management/EW/UAV control node as part of a network of other friendly air superiority fighters (and supporting dedicated AEW&C, EW, ELINT assets).
Dedicated AEW&C, EW and ELINT assets will still be important, however they will be greatly supplemented by these ideal air superiority fighters capable of AEW&C battle management/EW/UAV control, able to do some of those roles in a distributed fashion, operating more forward/aggressively in the battlespace and all in a highly networked manner, supported by loyal wingman UAVs.

The AEW&C/battle management/EW/UAV control role for an air superiority fighter basically means in addition to being able to do the traditional air superiority mission of kinematically maneuvering, sensing the environment and cooperating with friendly aircraft to defeat opposing aircraft with onboard and (or friendly offboard) weapons ---- your fighter also needs to be a miniature AEW&C/battle controller/jammer aircraft/UAV control aircraft at the same time.

Yes, advancements in sensors, automation, and networking can certainly allow a single pilot to perform the "traditional" air superiority task and also perform the AEW&C/battle management/EW/UAV control role -- but the ability to perform these roles simultaneously will be limited by the human being inside the cockpit able to take in all of the information and make tactical decisions and decide what to communicate and prioritize with friendly aircraft.


I.e.: human beings in the cockpit are the rate limiting factor for the number of simultaneous things that an aircraft can be doing, regardless of the level of automation.


Now, considering that fighter aircraft will still need a minimal level of kinematic performance, as well as constraints on size, we will not be seeing fighter aircraft with 3 or 4 or more pilots -- such a hypothetical aircraft would be very capable at the AEW&C/battle management/EW/UAV control role but would be far too compromised in the kinematics and size of a fighter to be viable as a mainline air superiority fighter.

The fact that a twin seat aircraft is superior to a single seat aircraft in the AEW&C/BM/EW/UAV control role doesn't mean that every fighter aircraft in one's fleet needs to be twin seat either. A twin seat aircraft inevitably offers some additional costs and complexity relative to a single seat aircraft, and an ideal air fleet composition would likely try to balance a fraction of twin seat aircraft with a portion of single seat aircraft.

But in the case of J-16, as an already existing twin seat fighter airframe with good kinematic performance, range, and payload, the second pilot/WSO should very much be a match made in heaven, enabling the aircraft to be much more capable at the traditional air superiority and simultaneously perform the AEW&C/BM/EW/UAV control role, compared to a single seat aircraft.

Fortunately for the PLA, they have a large fleet of single seat fighter aircraft (J-10 variants, J-11B, and of course J-20) that the twin seat fighters (J-16, and the expected upcoming twin seat J-20) will be able to complement.
 

Twix101

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Well, everyone should question why the radome cross-section is pretty different from other Flanker variants, and especially a smaller one. This doesn't make any sense except if this aircraft is a test bed for another one. My theory here is J-11D is an avionics test bed for FC-31/J-35.
 

Deino

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Well, everyone should question why the radome cross-section is pretty different from other Flanker variants, and especially a smaller one. This doesn't make any sense except if this aircraft is a test bed for another one. My theory here is J-11D is an avionics test bed for FC-31/J-35.


But is the radome actually smaller? Frontwise yes, but due to its angled installation, the number of AESA modules could actually be even larger.

J-11D front vs J-11B.jpg
 

foxmulder

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Well, everyone should question why the radome cross-section is pretty different from other Flanker variants, and especially a smaller one. This doesn't make any sense except if this aircraft is a test bed for another one. My theory here is J-11D is an avionics test bed for FC-31/J-35.


This is probably not correct. If anything it has a better aerodynamic shape thanks to less protruding nature of AESA vs old pulse radars that dome was designed for!
 
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