Chapter 906 The production capacity is too high, and there are worries
Originally, Chang Haonan set aside two and a half months for the entire trial production process.
That is, it can be completed before the beginning of September, or at least the process parameters can be basically determined.
As for the reason...
It is very obvious.
If there are no major changes to the timeline, starting from September, there will be constant big news in the remaining months of this year.
In his previous life, in 2001, he was still studying hard for his PhD. In hindsight, he could only learn about the drastic change that could be called a turning point in history through a few words in newspapers and TV.
Since we had just experienced a plane collision in the first half of the year, my reaction at that time was very simple-
"You really deserve it."
Of course, Chang Haonan really couldn't do anything else at that time, so he could only vent in his heart like this.
But in any case, this did objectively lead to his lack of understanding of what happened throughout the fourth quarter of 2001, making it difficult to plan in advance as he did during the Allied operations.
You can only take one step at a time.
So, although Chang Haonan will most likely not be able to directly participate in the decision-making this time, by that time, he will definitely have to devote some extra energy to paying attention to the development of the situation.
However, it turns out that he was overly worried.
The trial production process progressed far faster than he expected——
This is not entirely because of how efficient the two teams are, but because Chang Haonan's initial thinking was a bit off the mark.
His two and a half months were the time set aside to find "optimal processing conditions."
But in fact, the air film hole of the turbofan 10 can be made by traditional electric spark technology and the manual work of a skilled craftsman, and it does not need to be so extreme.
At least not for Liming Factory.
So only one month later, starting from the beginning of August, trial production has begun to produce products that meet the process requirements.
Although at the beginning, the yield rate was still at a relatively low level.
But no matter what, it is much better than the situation of EDM that makes the listener sad and the listener in tears.
Therefore, by mid-August, Zhong Shihong directly led a team back to Liming Factory and brought a month's supply of semi-finished turbine blades and turbine disks.
That’s right, he plans to use this engineering prototype directly to process the air film holes of the mass-produced turbofan 10——
We have to try it anyway, so why not make good use of this place? of production capacity.
As expected, the production quantity of prototypes soon exceeded that of mass-produced models...
According to Chang Haonan's calculations, under ideal circumstances, taking into account the improvement of production efficiency and yield rate, ultra-short Compared with the past EDM process, the efficiency of laser technology in drilling can be improved by an order of magnitude.
Of course, this does not mean that the production capacity of turbofan 10 can be directly increased by 10 times.
After all, as the drilling efficiency has improved, there will be other speed-determining steps.
For example, the finishing of high-pressure compressor blades, the coating speed of heat-resistant coatings, etc.
In these links, Liming Factory has actually used international mainstream, or technologies equivalent to international mainstream.
What restricts the improvement of production capacity is the proficiency of workers.
And more importantly, the order volume——
Although China's GDP was 4 years ahead of schedule compared to the previous period, it surpassed Italy and France in the second quarter of 2001 and entered the world Fifth, the UK is only one step away from fourth place, but overall it is still a relatively backward developing country.
Money is needed everywhere.
Moreover, we must also consider that we should not overly stimulate neighboring countries and major competitors.
Therefore, this year, that is, 2001, the budget allocated for national defense construction is 220 billion yuan.
Equivalent to approximately US$26 billion.
It is about 1/12 of the United States.
This is the result of growth of at least 15% every year since 1997, and a maximum growth of 20% a year.
Therefore, despite the fact that when 20 turbofans were built every year, both the Air Force and the aviation industry complained that there were not enough.
If we can produce 200 units a year in the future, then they won’t be able to eat anymore...
...
"Mr. Chang."
Looking at the test report with increasingly better data, Zhong Shihong’s expression was slightly melancholy:
"Can't we really let Factory 112 and Factory 132 increase their production capacity?"
After the production capacity potential gradually increased, he even became more forceful in his speech than before.
When facing colleagues from the Aviation Industry Group next door, my attitude changed directly from "please be gentle" to "have you not eaten?"
Ahem...
In short, the production capacity potential of turbofan 10 is now very obvious, so Zhong Shihong’s concerns have gradually shifted from pure technology to business.
It is really uncomfortable to have orders for only fifty or sixty units despite having the ability to produce hundreds or dozens of units a year.
"It's difficult...the three services plus the second artillery, the pressure to change equipment is very high, and the resources that can be specifically allocated to the fighter aviation force are already limited."
Chang Haonan held the weapon in his hand. Putting down the pen, he shook his head: "Including J-11B and J-10A, we can produce about 30 aircraft per year, which is already partially exceeded my expectations. On the one hand, the J-10E has no customers for the time being, but on the other hand, it is still suitable for The power of AL31F. ”
“And to put it in perspective, even if there are so many orders, the expansion of factories 112 and 132 has not been completed, especially factory 132, which is still planned. We have built a brand new factory area, and now we can’t produce much production capacity even if we keep running...”
Just 200 engines a year can produce about 100 new fighter jets, even excluding engine replacements and spare parts.
This number could not be reached every year even before Chang Haonan was reborn, let alone now.
"The main reason is that our current production potential is too great."
Zhong Shihong touched his chin:
"The trouble of happiness..."
Chang Haonan was originally going to change the topic, but when he heard what the other party said, he suddenly had an idea.
The production capacity of the turbojet 14 is actually not low.
The reason why we have never encountered this problem is because the Persian F4 upgrade project takes up hundreds of units of production capacity at a time.
Of course, in the international market, there is currently no model that requires a high-thrust engine like the turbofan 10.
After all, the United States and Russia have their own power models and there is no need to import them from China.
But if you open your mind...
What if you don’t export the complete engine?
The current production capacity potential of Liming Plant is actually mainly accumulated in the turbine disk and turbine blades.
This is a unique problem in the world.
You must know that the turbine structure is one of the most precious parts of the entire aviation engine.
The situation of the vast majority of aviation manufacturers is similar to that of the previous dawn, with total output being dragged down by turbine components.
Just not that exaggerated.
Therefore, there is definitely a market for exporting turbine blades alone...
It’s just that one thing is needed now to make the world realize China’s capabilities in this area.
Thinking of this, he put down the pen he had just picked up, and then picked up the phone receiver.
But after thinking about it for a while, I let it go again.
Even internal calls are not absolutely foolproof.
So according to regulations, some truly core things need to be conveyed in person.
“Old Zhong.”
Chang Haonan looked at Zhong Shihong, who was not far away and had begun to lower his head to sort out the report:
"The next time you return to Shengjing, remember to go to the 606 office to find Comrade Liu Yongquan."
Zhong Shihong has to go back to Liming Factory about every half month to report on the work situation, so he is better than Chang Hao, who is based in the capital. Nan is more suitable to do this.
"Mr. Liu?"
Zhong Shihong stopped what he was doing and looked back at Chang Haonan:
"But I remember...he should have been transferred. Guided Snecma Group to improve the M88 engine? ”
"Yes, that's why I asked you to find him."
Chang Haonan nodded:
"You tell Comrade Yongquan that you can consider it when revising the M88 engine design next time. Modify the cooling film hole on the turbine structure and change the current two-dimensional forward tilt hole into a three-dimensional dustpan-shaped hole."
"I will prepare a technical copy before you leave. Just give it to him along with the document.”
“The three-dimensional structure...”
Zhong Shihong's initially dazed expression gradually became enlightened:
"The same design as the turbofan 10?"
"That's right."
Chang Haonan revealed gave a meaningful smile:
“The structure of the air film cooling holes on the turbine is different from that of the combustion chamber wall, and is relatively independent of the design of the engine itself. Therefore, after different types of engines are replaced with the same air film holes, the cooling The efficiency won’t change much.”
"It just so happens that the French want to further improve the performance of M88, so let's help them by the way..."
No matter what hole shape, the processing difficulty of two-dimensional holes is far lower than that of three-dimensional holes.
Moreover, the Western military currently generally uses electrochemical machining for hole making. The process parameters are relatively complex. When relying mainly on experience, the process development cycle is measured in years at the fastest.
So, if the M88 really changes the air film hole structure, then Snecma will not be able to achieve mass production in a short time.
But the Rafale fighter jet wants to compete with the EF2000, but the upgrade progress cannot be delayed.
Orders will naturally flow to Liming Factory...
And the French will not suffer.
The cost of ultra-short laser processing is not higher than that of electrochemical processing. Combined with the actual situation in China, even if enough profit margin is left, the final product in Snecma’s hands may still be Cheaper than making them themselves.
A win-win situation, a win-win situation!
(End of this chapter)