I don't get it. Why is China continuing to develop Flankers? I don't know what the J-11BS will be used for at any rate. If it doesn't incorporate an AESA or other upgrades from the baseline J-11 then why are they building it?
Do a few baby steps before you run.
The baseline J-11 uses a twist cassegrain radar, and the technology is based on the original Su-27. Pretty outdated now. The J-11B uses a slotted array radar. Its not an ESA, but even though its still a MSA, it has significant advantages over the twist cassegrain in field of view, rate of scan, low sidelob emission, and signal gain. The radar is also backed up with much more modern processing power. The J-11B also uses a digital cockpit and a wide angle HUD.
So the avionics improvement is significant over the older model by a generation. Not F-22 or F-35 caliber, but it may match those of late F-15s and F-16s.
PS: How come it took this long to see pics of the J-11BS? Isn't it just a two seater of the J-11b? Surely it isn't this hard to make a two seater...
PPS: This reply is full of questions. Any answers or opinions and i will be grateful.
There is already pictures of it like two years ago. When a picture of the J-11B was displayed in a defense exhibit, the J-11B was being shown being manufactured inside a factory. In the background there was at least two or three two seaters that were also in the process of being made.