The military-industrial scientific research system of the academic master.

After reaching agreement on the technical route with Ma Liping, Chang Haonan led the entire casting research team into a new round of technology research and development.

On the other hand, equipment problems must also be solved simultaneously.

The reason why the former had been struggling for so long just now was precisely for this reason.

After all, it was a new device that had just been bought for a short period of time. It was a bit wasteful to replace it directly.

However, the two people analyzed it later and found that although the two processes are very different in control methods, the basic principles are very close, so the difference in hardware is not that big.

It is completely possible to make in-situ improvements based on the original equipment.

Ma Liping finally breathed a sigh of relief.

As the director of this precision casting center, although he does not have financial KPIs on his back, as the head of a research institution, he must always be careful with calculations.

Therefore, Chang Haonan contacted Shengjing Scientific Instrument Company, which is also a subsidiary of the Chinese Academy of Sciences, through the Torch Group, and asked the other party to improve the solidification equipment of the directional solidification furnace as required and change the original high-speed solidification process to one that he had registered. Patented liquid metal cooling process.

Of course, the patent licensing fees for these things that Liming Factory has on hand, as well as the subsequent new equipment purchased, will definitely be waived.

But if there are other users, then the two companies will add two to one and make five, and the profits will be divided equally.

It can be regarded as a cooperation that is not very eye-catching, but has far-reaching impact.

In addition, software upgrades still require hardware-level support.

Compared with the high-speed solidification method in which the cold end is in a complete vacuum state, the new process can control the temperature field of the cold end far more accurately than before, and the specific heat capacity of both liquid tin and liquid aluminum is quite huge, and a more effective induction heating power supply is required. , stirring system, temperature sensor...

Fortunately, China's industrial level has been pushed forward several times by Chang Haonan in the past two years. It has indeed made great progress. Most parts can be obtained domestically, and the more sophisticated ones such as sensors are not the same as those in Europe. With the cooperative relationship, it is not difficult to bypass the technical blockade that has basically existed in name only to buy one with higher accuracy.

However, this process definitely requires a process.

Have to wait.

As for the investment casting process model design mentioned above, Chang Haonan has already set up the framework, but still needs enough data to adjust various parameters.

Therefore, after determining the specific research plan for manufacturing single crystal turbine blades and arranging the work, he himself was not as busy as he was in the first few days.

But on the other hand, because he had to adjust parameters based on the data of the casting process and then feed it back to the production side for new process testing, he could not temporarily leave Shengjing as usual to focus on other projects.

In short, I was free for the first time.

Of course, considering Chang Haonan's current status, the so-called "leisure" can only be relative.

After all, Shengjing is the cradle of China's military industry in various senses, especially the aviation industry. There are a large number of research institutes and enterprises belonging to the Science and Technology Commission system.

Such a great god is right next to him, and he doesn't seem to be very busy.

Such a God-given opportunity, I must try to invite it.

Even if you can't invite him, you can at least show respect to the boss.

The meaning must always be in place.

Chang Haonan is not a person who likes ostentation, so he refuses most of the invitations that are not nutritious and just invite him to take a look or give a lecture.

However, Shengjing can be regarded as the place where he started, so there are some places worth visiting.

For example, 112 Factory and 601 Institute.

Firstly, he has quite a few acquaintances in these two places, and secondly...

He also wanted to see with his own eyes what the Persian F14 was like——

It is different from the previous F4EC project. Since the F14 has too many places to move, and the number of aircraft that need to be upgraded is relatively small, only 40, at least a considerable part of the life extension upgrade project needs to be carried out in the 112 factory. Not in Persia.

To this end, Shengjing Aircraft Industry Group also set aside a space in the final assembly workshop of the old model J-8 to park the three aircraft that were first sent to China.

For Factory 112, Chang Haonan was already a regular customer, so he didn't make any big ostentation.

However, the factory director and secretary took the leadership team to the factory gate to greet them in person.

Then He Ming, an old acquaintance who has now been promoted to chief engineer of Shengfei Group, took Chang Haonan to change into work clothes and went to the assembly workshop that the latter was all too familiar with.

Compared with the J-11, although the production of the J-8 series now uses some new technologies such as digital drawings, it does not introduce the pulsating production ideas of parallel operations and collaborative assembly, and still uses the traditional final assembly method.

Although it is slower, it is beneficial at this time.

Because there are almost no requirements for site layout, as long as there is a place to park the aircraft and assemble the frame, it is easy to use part of the area for other purposes.

"These are the three planes sent by the Persians."

He Ming took Chang Haonan past two J-8B/Ds that were in different stages of final assembly.

This is a previous order placed by the Air Force and has not yet been fully delivered.

When they started cutting out materials for production, they were still China's most cutting-edge domestic fighters.

Who would have thought that just two years later, Xiao Tiantian would have become Mrs. Niu.

……

The two came to the other side of the factory that was separated by a fence.

Three F14As painted in desert camouflage are parked here.

However, only one of them is complete, and the other two have had their iconic swept wings and vertical tail removed.

"This complete aircraft is one of the four that Persia gave us directly in exchange for the contract. It means that it will be slightly overhauled and then handed over to the Blue Army Brigade in Dingxin to form a force similar to the 4th Squadron of the US Army. Highly simulated imaginary enemy troops.”

He Ming walked to the plane and introduced it to Chang Haonan.

The latter took two steps forward, reached out and touched the F14 with the Persian Air Force emblem, especially the variable wing part.

Due to various reasons, China Aviation Industry completely missed the variable sweep wing trend from the 60s to the 80s.

There were many models that were originally planned to adopt this configuration, but were either ultimately abandoned due to technical or cost issues, or the entire project was simply abandoned halfway.

Although in hindsight, this can't be considered a bad thing.

But purely from the perspective of hobbies and feelings, it is still a bit of a pity.

In his last life, Chang Haonan had never even seen an aircraft with a variable sweep wing structure up close.

Now it can be considered that a small wish has been fulfilled.

"This is a good idea, but it's a pity that the F14 in the US military is probably about to be retired."

Chang Haonan's tone was slightly regretful.

It's not because of the retirement of the F14 itself, but because we finally got a few U.S. military active-duty aircraft that can fly. As a result, the actual combat value of the training was greatly reduced.

He Ming's mentality is much better:

"There is no way. The reliability and dead weight issues of the variable sweep wing were brought up in the mother's womb. Moreover, the F14's dispatch on the aircraft carrier deck is not as convenient as the F18's, and the actual dispatch rate is very different."

"Looking on the bright side, everything is difficult at the beginning. We might be able to get other models in the future."

He was just saying it casually now, but he accidentally reminded Chang Haonan.

If I remember correctly, Venezuela should indeed have a batch of F80A/B fighter jets from the early 16s...

However, these are all things for later.

After seeing the complete aircraft that had been assembled, He Ming took Chang Haonan to a place slightly closer to the door.

The other two aircraft have been dismantled into pieces, and there are many technicians busy around.

Quite a few of them are obviously not Chinese faces.

"Are those Persians?"

Chang Haonan raised his hand to signal.

There is almost nothing in this workshop, even if there are foreigners, it is nothing.

"No, it's the Russians from the Pennant Design Bureau who came over to be responsible for integrating the R33 missiles into those aircraft."

"They have developed a newer generation of R37 ultra-long-range air-to-air ammunition in the past two years, so they don't care much about R33 and just brought a few sample rounds over."

While talking, He Ming led Chang Haonan around the two planes and came to the other side of the factory.

On the special bracket here are two missiles that are extremely large in terms of air-to-air weapons.

Chang Haonan made a rough estimate and was very sure that this thing was thicker than his waist...

"How heavy is this thing..."

He asked He Ming in a low voice.

"The bomb itself weighs half a ton, has a charge of about 40 kilograms, and has a theoretical range of 300 kilometers, but it needs to be matched with the MiG-31 radar to achieve it..."

However, Chang Haonan didn't care about the second half of He Ming's words.

After thinking for a moment, he raised his head again:

"I think this kind of thing should have potential in other aspects..."

"other aspects?"

He Ming didn't react for a while.

“When we were working on Thunderbolt 11 before, I suggested that the Second Bureau of Electrical and Mechanical Engineering develop an anti-radiation missile based on that, but later I found that it was too small, and its range and power were not enough, whether it was for air or ground purposes. .”

Chang Haonan pointed at the two R33s in front of him:

"If there was something of this size, it would probably be a lot more convenient..."