In Project 10, Ascendas Group is mainly responsible for the manufacture of fuselage segments 16, 17 and 18, and the supporting supplier of vertical tail rudder surface, pelvic fin and emergency ground power auxiliary unit (GPU).

Don't underestimate these three fuselage sections, they are the most critical bee waist parts in Project 10.

On the second-generation aircraft, although this part is important, the focus is only on a single structural load-bearing, and the production and manufacturing requirements are relatively simple.

The No. 10 project undertakes the research and development project of the domestic third-generation fighter, which is technically a big improvement compared with the second-generation fighter, and the whole aircraft adopts static instability technology, which makes the aircraft must use the fly-by-wire control system to improve the piloting performance of the aircraft, and the aerodynamic layout of the aircraft must also be greatly improved.

One of them is the use of wing-body fusion technology.

The 16th, 17th and 18th fuselage segments undertaken by Tengfei Group are the key segments of wing-body fusion, so in these three segments, not only the super load-bearing structure is required, but the internal frame and the external skin must be extended with special-shaped surfaces due to aerodynamic needs.

This requires that the traditional riveting process is no longer suitable for some parts and must be met by using a high-precision welding process.

After several times in the country, only Tengfei Group can undertake the processing capacity of electron beam welding of 7-meter-long large-scale segmented parts, coupled with Tengfei Group's profound attainments in chemical milling, and finally the No. 10 project team handed over these three most important fuselage sections to Tengfei Group for production.

For the Tengfei Group, there is indeed pressure to undertake the production of important fuselage segments of the No. 10 project, after all, it is an important component of the third-generation fighter, and the Tengfei Group has never seen it before, let alone touched it.

But if you really want to be worried and overwhelmed, that's not enough, after all, the 16th, 17th, and 18th fuselage segments of Project 10 together can actually be regarded as the central wing box segment of the domestic third-generation fighter.

The fighter Tengfei Group has never been built, but the central wing box Tengfei Group is very familiar with, not to mention that other TM-9 aircraft can be mass-produced, the most important thing is that the Tengfei Group has broken through the production process of the central wing box.

Of course, the central wing box of the TM-9 aircraft is still smaller, after all, it is only a small aircraft with a take-off weight of less than 5 tons, even if the central wing box is like that.

What really shows the success of the Ascendas Group in this regard is the central wing box on the advanced light transport aircraft that is being tested statically, with a total length of 6.4 meters, a width of 3.2 meters and a height of 1.1 meters.

It is precisely by gnawing this difficult bone that Tengfei Group can make the advanced light transport aircraft have greater flexibility in the design and selection of airfoils, engines and fuselages, and lay a solid foundation for many sub-models derived in the future, so as to build a common platform for civil and military use.

Because of this, the production of three fuselage segments with the nature of a central wing box for Project 10 was not a challenge for Ascendas.

Of course, not many people know about these important things, except for a few core leaders such as the head of the headquarters, but even those who know the important production work undertaken by Tengfei Group are attracted by Liu Chun's confident words at this moment.

"I don't know if other countries in the world have applied other integrated turbine blade air film cooling hole processing technology, but I dare to say responsibly that no matter what advanced processing methods are foreign in this regard, our Tengfei Group's NB-711 electrochemical hole processing equipment will not be inferior to them.

Because our turbine blades are using this process, the yield rate has increased from the original 32.4% to the current 85.7%, and the performance is surprisingly good, otherwise it would not be possible to increase the pre-turbine temperature from the previous 986 degrees Celsius to 1228 degrees Celsius......"

Liu Chun's words became stronger and stronger, and the fat on his fat face trembled, as if the excitement that had been accumulated for a long time was about to explode at this moment, and the surrounding leaders and leaders were also infected by Liu Chun's passionate words, and nodded frequently in surprise and relief.

It has been the dream of every Chinese person for more than 100 years to be able to overtake in corners and keep pace with the world's advanced level, especially these leading cadres in the army, who are looking forward to the domestic industrial circles to work hard to catch up with the world's advanced level as soon as possible, and to add a more solid backbone to the modernization of national defense.

In the past, although they had firm beliefs, they felt that it would take twenty or thirty years to achieve some results in the face of the huge technological gap abroad, but when they saw Tengfei Group using NB-711 electrochemical hole processing equipment to overtake in corners, they immediately felt that the domestic high-end technology was not as weak as imagined, as long as they were willing to work hard, not only to catch up, but also to surpass is not impossible.

Of course, if they are excited, they will naturally be level-headed, anyway, they just looked through the glass door, and listened to Liu Chun say a lot of emotional things, but the real product was not seen at all, so they waited for Liu Chun to pause, and was ready to ask about this issue.

But before these people could speak, there was a sudden sound of beep~~ in the glass door, and then everyone saw a small rail truck loaded with encapsulated turbine blades slowly starting from the factory, and when it ran to the glass door, an iron gate behind it fell, and then the glass door opened.

The small rail wagon flashed orange and yellow display lights, and drove smoothly and quickly along the track in the passage under the curious and stunned eyes of everyone.

"Fully automatic?"

"Where is this?"

"Is it to the workshop we just visited?"

......

Seeing such an automated mode of transportation, the leaders and leaders present were all wide-eyed, and the mode of transportation was automated, which was not uncommon in other factories, and there was no such thing at all.

Even the head of the headquarters, who had a calm face, saw this, and his face showed a slightly strange look.

"This is our group's automated rail transportation system, around the No. 0 assembly workshop, the surrounding four sub-workshops and supporting plants are connected to each other using similar tracks, and the use of this unmanned rail car for the transportation of materials and finished products in the workshop, greatly improving our production efficiency. ”

Liu Chun smiled and introduced the automatic rail transporter that had just passed.

"Is it a railway-like way of operating?" asked a troop leader.

Liu Chun nodded: "Yes, we have learned from the operation mode of the railway department and used the computer to carry out unified scheduling of transport vehicles, which has led to the current transportation system." ”

"Then how many of these automatic rail wagons can you make a day to go to Workshop 0?" This time the question was not the previous troop leader, but the previous head of the air force who questioned the lack of air film cooling hole processing equipment behind the crowd, I don't know when, he and others had already squeezed in front of Liu Chun.

Liu Chun didn't care, and smiled: "About more than 400 trains a day?"

The head of the air force who asked the question was stunned, and hurriedly continued to ask: "Then what is the annual output of your WD-30S turbofan engine?"

"Not much, there will be more than 400 units. Liu Chun smiled brightly.

"400 units...... Still...... Not much?"

The eyes of the head of the air force unit suddenly widened, his voice trembled and raised an octave, and the whole person shook, so that none of them stumbled and fell.