The modification of the J-8 is mainly focused on avionics, after all, until now, the domestic avionics technology is still quite backward, the advanced 1553B data bus, the pulse Doppler radar of the flat slot antenna, and the inertial navigation system, etc., there is nothing.

The domestic need for these advanced technologies, the Air Force has been waiting for several years, just after the import of the Mirage 2000 completely failed, finally, the Air Force still took the J-8 to change, the J-8 was replaced with an advanced avionics system, to meet the needs of an interceptor first, until now, the J-8 does not have a suitable fire control system, completely has a gun and no bullets.

Now, Grumman has come this time to actually inspect this fighter, the most advanced fighter in the Han Kingdom, a fighter that has always been in extreme secrecy, and now it has finally appeared in front of their eyes.

After looking at the front nose and discussing how to install various avionics into it, Pelehak, a technical maniac, began to look at the back part again, and looked at the overall wing leading edge, he shook his head even more.

"Your fighters have not used the leading edge maneuvering flaps until now, they are too backward! I suggest that in this improvement project, you should also add upper flaps, which will greatly improve maneuverability and reduce the running distance. ”

The leading edge of the wing can be bent downward when needed, which is the most common technology, in the United States, the original F-86 fighter had this kind of thing, but in China, this technology is clearly known, but it is not dared to use, because it is not worried about its machining accuracy, those action cylinders that drive the flaps, as long as one of them is stuck, this flap will cost.

The wing is monolithic, there is nothing, and when you look here, you know that it is too backward.

In the United States, it is too simple, to add this flap to the Chinese fighter, so that the performance of the fighter has been greatly improved, an original high-altitude and high-speed fighter, can also do some close-range combat work, and there is no need to worry about competing with the F-16 fighter, no matter how this aircraft is changed, there can be no rebirth changes, the basic aerodynamic layout determines everything.

"We can also help you increase the size of your wing fuel tanks to carry more fuel."

It's good that Pellehak came with good stuff this time.

When he walked to the back, he looked at the huge firing cover behind Jianba, and shook his head incessantly: "This fighter, if you want to have greater improvements, it is best to replace the tail nozzle behind it, or simply replace it with an advanced third-generation engine, so that it can be improved a lot." ”

These words were exactly what Mr. Gu wanted, and Mr. Gu was on the side, and he immediately became excited: "Yes, we also have this idea." ”

Qin Feng was accompanying Pelehak, and Mr. Gu was by Qin Feng's side, and now as soon as Mr. Gu said it, Qin Feng immediately translated it.

In fact, about the engine of the J-8, Mr. Gu also wanted to replace it for a long time, the turbojet-13 is still being tested, even if it is installed on the aircraft, the thrust increase is not very obvious, so it is not the best choice, if it can be replaced with a new third-generation turbofan, there will be a rebirth change immediately.

They have also asked Europe for help, such as the introduction of RB199, this engine size is more suitable, low fuel consumption, after the introduction, the combat radius of the J-8 will be doubled, and the thrust has also increased a lot, so that the maximum speed index will not be reduced, maybe it can be increased by a part.

But later, it was gone, the purchase price alone was too high, and it was impossible to introduce the production line, and now, the superiors have agreed to the avionics improvement project, and if you work harder, you may be able to replace the engine.

"The Sabre project we are currently working on uses the F404 to replace the current turbojet-7 engine, which is also equipped with a turbojet-7 engine, so it is most appropriate to use the F404 to replace it, and we also have experience." Pelehaq said.

One is also changed, two are also changed, in this way, you can also get a lot of business for General Electric, according to the initial negotiations, China wants to improve about 50 J-8 fighters, that is, 100 engines, plus if it is blocked, at least 120 or 30 units!

For the sake of this big deal, you can fool around a little more.

So, Pelehaq continued: "We have compared the data, the intake flow, volume and the like are appropriate, almost can be directly replaced, at the same time, after this replacement, the power of the engine, from the level of five or six tons directly increased to eight tons, an increase of 50 percent, the performance improvement is quite huge, relying on this powerful engine, the improved model of the J-8, the basic performance will be similar to the F-16." ”

It's not as good as the F-15, but it's quite strong to be able to compare with the F-16.

Let's not talk about fly-by-wire control, after all, there is still a long way to go for this kind of improvement, just by replacing the engine, you can make the performance of the fighter to a big step, from the second generation aircraft to the level of the third generation aircraft, it is also completely possible, after all, it is the most advanced push.

It is definitely a good thing that can make Pakistan take a fancy to it.

Now, when Pelehack looked into the eyes of everyone, he knew that his words had an effect, and everyone was really interested in replacing the engine.

In fact, China is interested in everything, but what, touch your pocket, there is no money in it, if the funds are sufficient, after the investigation of the Phantom 2000, it was purchased, why delay for so long, it is not because there is no money in the pocket.

Needless to say now, even in the nineties, when buying the Su-27, a large part of the funds were exchanged in the form of barter.

Now, the superiors have made up their minds to withdraw funds to replace avionics, which is unprecedented, and it is very difficult to continue to withdraw funds to modify engines.

Speaking of which, Pelehaq also began to compare the tail of the aircraft, how long the engine is, how to install it, after the tail becomes a convergence-diffusion nozzle, these covers must be removed, the parachute moves up, etc., it is very well said, in terms of professional knowledge, Pelehaq is definitely an authority, even if it is the Sabre 2 project, he is also the person in charge of Grumman, and now in terms of the improvement project of the J-8, he is still the person in charge, and when the front end time was working on the Sabre-2 together, he is also familiar with the J-7 aircraft, and now the J-8, and J-7 have a lot of similarities.

Pelehak said that everyone nodded again and again, yes, the introduction of the people is quite reasonable, and if it is improved in this way, it will definitely make the performance of the fighter better.