Israel's self-developed fighter jet project has been discontinued, but their avionics equipment is still under development, and they plan to sell it in addition to upgrading themselves, after all, for them, one way to maintain the huge investment in the military industry is to constantly export weapons to make money.

They also developed pulse-Doppler radar, and they only needed to shrink their radar antenna to fit into the J-7's air intake cone.

This is not just for the J-7, in the world, there are a huge number of MiG-21 fighters, these fighters have come to the time to improve, if you launch some upgrade kits for these fighters, there is no doubt that it is very profitable.

The Israelis are definitely the most business-savvy, they quickly found this gap, so they began to lay out, of course, in addition to them, there are many other countries, there are also this kind of similar projects, anyway, you only need to change the radar caliber, adjust the software of the program, it is easy to do, as long as the technology of modern pulse Doppler radar is overcome, it is easy to adjust.

When he heard this, the expression on Song Lao's face became serious again, this is definitely not a way to live for the J-7III, this kind of surveying and mapping imitation of the MiG-21MF is mainly because it can put radar in its huge air intake cone and obtain the most needed all-weather air combat capability.

Now, J-7III has begun to gradually put into production, but the situation has undergone earth-shaking changes, J-8 began to seek advanced avionics from abroad, J-7 through improvement, has also had advanced all-weather capabilities, J-7III has been fully outdated, in order to accommodate its huge air intake cone, the entire fuselage has been thickened, the fuselage is bulky, and the fighting ability has decreased significantly compared with other aircraft, in order to install that radar, it has paid too much, and after installation, the performance is not very advanced, and it has been eliminated, That's inevitable.

As the first project in his hands that really came down, now it has fallen to this point, Song Lao is still a little regretful, but it's really better to improve the J-7III than to improve the current J-7, after all, the current J-7 is very mobile, and the planned facelift can even fight with the F-16.

However, the imitation of this J-7III is not meaningless, for example, in the process of imitation, we have come up with a turbojet-13 engine, this engine has a similar size to the turbojet-7, and it is easy to replace it with the current J-7, so that the performance of the J-7 is better.

"How is our J-7 plan to replace the delta wing going?" Without waiting for Song Lao to ask, Qin Feng began to ask questions, after all, although the super seven is advanced, it is international cooperation, and the plan of the J-7 to replace the delta wing is done by China using its own technology, and it can also have good performance, Qin Feng attached great importance to this project at that time, and now, he can finally listen to the progress of the project.

"We're still working on it." Tu Lao said: "This new project, we decided to be obviously J-7E, since it is a major change, simply change it more thoroughly, use our existing technology to upgrade, in order to increase the fuel load, we decided, cancel the cannon at the root of the left wing, increase the overall fuel tank structure in the wing, and at the same time change the original gravity refueling to pressure refueling, as well as replace the new avionics system and new chaff / hot flare bomb launcher, etc. As a result, the entire project may have to be delayed for some time. ”

Now, a large number of J-6 fighters in the Air Force have begun to be gradually retired, and even the J-7 fighters equipped in the early days will be gradually retired, so the gap in the Air Force is very large, whether it is self-developed advanced fighters or purchases, the price of third-generation aircraft is not low, and it is impossible to replace them all, so it is inevitable that a new batch of J-7 fighters will be needed, and what they are aiming at is this market.

Now, in Tu Lao's mind, there is always the idea of a market economy, not only in the international market, but also in the domestic market.

In fact, when the MiG-21 first came out, it was a high-altitude and high-speed fighter, with a small fuselage and a weak engine.

Now, our side is to change such a high-altitude and high-speed fighter into a combat fighter, so that it can fight with the F-16 at close range, at the same time, after a series of improvements, the range should also be greatly improved, in the past, the J-7 fighter only had a range of 1,000 kilometers, after these improvements on its own, to reach the range index of 2,000 kilometers!

The electronics also need to be greatly updated, and if the F-7MP progresses rapidly, and even a qualified pulse-Doppler radar can be obtained, they will also install this radar on the J-7E.

Even, they plan to install the hand on the J-7E without leaving the rod, from the outside, this aircraft has not changed much from the previous one, however, the interior has been completely replaced, more efficient and modern.

Tu Lao is very confident in this.

"Yes, good dishes are not afraid of being late, we are really looking forward to it." Qin Feng said: "I just don't know when I can fly, I can't wait." ”

Now, there are fewer and fewer test flight tasks left for Qin Feng, he is more involved in the research and development of fighters, and he was originally just asked to cooperate with the Jian-10, but now there are more and more projects, and the research and development of various military aircraft wants to take Qin Feng over.

Now, Qin Feng was also very happy to see the improvement of his own Jianqi, and at the same time, he still had some ideas in his head.

"Tu Lao, the 10,000-year-old windshield of our Jianqi should also be changed, when can it be replaced with an overall arc windshield, the current one is too obstructive."

Sitting in the cockpit of the Jian-7 and looking forward, what you see are two sets of partitions, which occupy a lot of field of vision, if there is an enemy plane just in the windshield, it cannot be seen, at this time, the pilot has to shake his head left and right to observe.

In fact, at the beginning of the J-7, there was a partition frame in front, which was a little less blocked, but the cockpit canopy was opened forward, the design was complex, and it was easy to eject failure, so it was later changed to open backwards, so that the front windshield had two sets of partitions, the front was a flat glass, and the side was curved, which just formed the front windshield.

This windshield is too backward, look at the West, the most advanced F-16, the whole thing is a cockpit canopy, how open the field of view is!