Set sail1992

Chapter 1123
This unexpected good news made the XAC team who came to investigate extremely excited!

Originally, everyone was satisfied with the performance of the D-30KP-3 engine, but now, the comrades of Huateng Group actually said that the performance of Liu Ye can be improved?

On the contrary, Mr. Tang is more concerned about the situation of D-30KP-4. He then asked Konstantin Antonov: "Mr. Antonov, in addition to the optimization of the installation angle and nozzle of the fuel nozzle, We have also optimized those places?"

"We found that there is a lot of room for optimization in the shape of the compressor blades of the high and low pressure stages," said Konstantin Antonov, who turned on the projector and pointed to the displayed picture to everyone. : "By re-optimizing the shape and structure of the blades, both the high-pressure compressor and the low-pressure compressor can achieve higher air pressure than before, and these are all achieved without significantly increasing costs."

Mr. Tang himself is a top aerodynamic structure expert in China, and he is very familiar with the D-30KP-3 engine. He just glanced at the shape of the low-pressure compressor blades on the picture. With his rich knowledge and almost keen intuition, he He nodded immediately: "It does seem very feasible...Mr. Antonov, according to the results of our computer simulation test, how much has the performance been improved?"

Konstantin Antonov said proudly: "7.12% and 5.63% respectively."

Brother Tang was a little surprised: "So many?"

Not only Tang Changhong, when these two numbers came out, everyone on the scene was surprised!
Although this does not mean that the overall performance of the engine has improved so much, but everyone is a top expert in this industry, and combined with the optimization results of the combustion chamber, a possibility that everyone did not dare to think of before has gradually surfaced in everyone's mind : Perhaps, the 1.1 version of the D-30KP-4 engine can really improve the performance by about 1.0% on the basis of the 10 version plan!

In the field of aero engines, it is not surprising that the performance of new models of the same series of engines has been greatly improved compared with the old models. Take the CF21 turbofan engine that will equip our CRJ-34 jet aircraft in the future as an example. , the maximum thrust of the early CF34-3A was only 4182 kg, while the CF21-34A used on the CRJ-10 has a maximum thrust of 8293 kg, and the overall performance has almost doubled!The latest version of CF34-10E has a maximum thrust of 9071 kg, which is almost 34% higher than that of CF10-10A. It is enough power for a low-density narrow-body mainline aircraft like A319.

所以1.1版本的D-30KP-4比1.0版本的D-30KP-4的性能有大约10%的增加，这其实并不是让大家特别震惊、特别接受不了的事情。

And there is another layer of meaning hidden in it, which shocked everyone:
For a long time, our aero-engine industry has been "importing", an imitation of a certain foreign product, with little ability to improve, even if it is like the "Spey" engine used on the "Flying Leopard". The British side has already given us the full set of technical information, production equipment, processes and formulas of the engine, but for a long time, the "Spey" engine produced by us is not as good as imported second-hand ones, let alone On the basis of the original, the engine has been improved, upgraded and its performance improved.

But what about these old Soviet experts from the Huateng Industrial Group?

All of them seem to be in their seventies and eighties, with white hair all over their heads, but their mastery and comprehension of aero-engine technology is amazing. To use the words in martial arts novels to describe them, their abilities have reached the level of "handy, grass, wood, bamboo and stone". All can be swords", you can fine-tune the various parts of the engine according to your own needs, so as to achieve the desired results.

This shows what?
This shows that these former Soviet aero-engine experts represented by Konstantin Antonov and Igor Yaroslavsky are a "gold mine" with great potential to be dug. Drinking coffee leisurely in Huateng Industrial Group is more than a waste of money? !

Realizing this, while everyone was happy, their hearts couldn't help but start to stir...

Facing Tang Changhong's surprise, Konstantin Antonov was extremely calm on the contrary. He waved his hand and said, "It's not a lot. The main reason is that the foundation of this engine is too bad. No matter how the D-30K engine is Change, the potential is limited, and the performance will not be greatly improved."

When Konstantin Antonov said this, Igor Yaroslavsky on the side took the words naturally, and said with a bit of regret on his face: "Unfortunately, we are getting older and already Without that energy and brain power to get a new engine, you can only do these tinkering jobs."

"Yeah, after all, age is not forgiving."

Speaking of this, Konstantin Antonov also looked regretful.

On the contrary, Academician Liu Daxiang, when he heard the emotion of Konstantin Antonov and Igor Yaroslavsky, suddenly moved in his heart and had an idea.

But even though he already had a certain idea in his mind, the old man didn't say anything, but continued to listen with a smile on his face...

........................

On the same day, after finishing the exchange with Huateng Industrial Group’s former Soviet aero-engine expert team, when returning to the hotel, Academician Liu grabbed Tang Changhong who was about to go back to the room to review the results of today’s visit, with an unsatisfied expression on his face. Said: "Little Tang, stroll in the yard with me? I have an idea, let's talk about it."

"Ok?"

Tang Changhong was stunned for a moment, then looked at Academician Liu's eyes that seemed to have some deep meaning, and then nodded: "Okay."

He was a little curious, what kind of idea made Academician Liu deliberately choose to chat in the yard instead of going back to the room - is the old man worried that there is a bugging device in the room?This is impossible, right?
With this curiosity, Tang Changhong followed the old man slowly to the empty center of the yard.

After handing Tang Changhong a cigarette, the two of them lit and took two puffs respectively, then Academician Liu said: "Xiao Tang, I can see that your team is not ordinary about Huateng Group's D-30KP-4. Excited, are you going to use this engine in your Universiade project?"

Naturally, Tang Changhong would not hide it from Academician Liu, nodded and said: "I really have this idea, because compared to the D-30KP-3, the D-30KP-4 engine has obvious advantages in terms of thrust and fuel consumption. , how could I not be moved?"

Academician Liu nodded with a smile, "Actually, I'm also quite moved. I think this engine is really suitable for your project..."

Speaking of this, Academician Liu suddenly changed the subject and said: "However, today's communication with Mr. Antonov and Mr. Yaroslavsky gave me an inspiration. Please help me think about it and see if this matter is relevant. Didn't get it right?"

When Tang Changhong heard the words, she was shocked immediately: Could this be the reason why Academician Liu pulled her here?He nodded quickly: "Speak, I'm listening."

"..."

Academician Liu did not answer right away, but took another two puffs of cigarettes, threw the butt of the cigarette on the ground and crushed it twice with his feet, and then asked Tang Changhong: "Xiao Tang, tell me, let's take the 'Taihang' a How about handing over the large bypass ratio project to Huateng Group?"

Tang Changhong just wanted to say, "We are too busy with the 'Taihang A' project alone. How can we have time to work on the development plan of the high bypass ratio engine of 'Taihang A'? Isn't that just when everyone is chatting?" An idea?", but when the words came to his lips, he suddenly became agitated, and immediately understood the reason why Academician Liu specially called him here to talk to him about this matter:
Before today, based on the core engine of the "Taihang" A fighter jet with a small bypass ratio turbofan engine, a high bypass ratio, high thrust non-afterburning turbofan engine was developed, which is indeed a "Taihang" project A vision of the team, a half-joking reverie raised by everyone during leisure chats, but today, after seeing Konstantin Antonov, Igor Yaroslavsky, these former Soviet aero engines After seeing the true level of the top experts in the field, this idea of ​​chatting in leisure time may not be just an idea...

You experts from the former Soviet Union, didn’t you say that you don’t have the energy and brains to build a brand new aero engine from scratch, but it’s still better to do some tinkering on the basis of an engine. no problem"?So based on the "Taihang" A, a high-bypass turbofan engine for transport aircraft also belongs to the category of "repairing", right?
That being the case, under the circumstances that the "Taihang" team was working hard and unable to scruple on this project, the "Taihang A" large bypass ratio turbofan engine project was handed over to these old Soviet experts from Huateng Industrial Group. From the point of view, it seems that there is no problem at all?

Compared with the D-30K, which was born in the former Soviet Union in the early 70s, the overall technical level is roughly equivalent to the medium bypass ratio turbofan engine in Europe and the United States in the mid-60s, the technical level of the "Taihang A" core engine is undoubtedly advanced There are many, so there is no doubt that the high bypass ratio turbofan engine developed on the basis of the "Taihang A" core engine has significantly higher improvement potential than the D-30KP- 30 has much greater potential for improvement.

After all, even the old Soviet experts of the Huateng Group themselves admitted that the improvement of the D-30K series to the level of D-30KP-4 has almost exhausted the improvement potential, and considering that there will be a lot of Universiade in the future. For many years, it is obvious that the "Taihang A" large duct, which has more potential for improvement, is more suitable for the Universiade project than the turbofan project.

Thinking of this level, Tang Changhong suddenly became excited, and he nodded immediately: "It is feasible! Of course it is feasible! Even if this project does not go very smoothly, in the early stage, our Universiade project can still use the D-30KP-3 engine to top it." For a while, wait for the latter engine to mature, and then replace it with this engine.”

"Really? I think so too," Academician Liu nodded and said, "The problem now is how to convince the leaders to agree to this idea."

Tang Changhong also immediately realized the difficulty of this matter: Yes, the difficulty of this matter does not lie in whether these former Soviet experts of Huateng Group can use the core machine of "Taihang A" as the basis to come up with a suitable for large-scale The turbofan engine with a large bypass ratio of the transport aircraft, and how to convince the leaders that the risk of this matter is actually controllable-after the successful development of "Taihang A", it will be a long time in the future. The core power system of our military fighter jets must not be leaked!Absolutely nothing can go wrong!
So here comes the problem, if these old Soviet experts from Huateng Group are allowed to participate in this project, it means that the "Taihang A" project has been launched for them in every detail. Once there is a leak, who can bear it? Take this responsibility?

nobody!
but……

Tang Changhong suddenly laughed. He shook his head and said to Academician Liu: "Mr. Liu, I think this question is actually something we have thought too much. In fact, it is not as troublesome as the two of us are thinking about here."

"Oh?"

Hearing what Tang Changhong said, Academician Liu Daxiang was a little surprised, he raised his eyebrows: "How do you say?"

"The D-30KP-3 engine will be the main engine of the H6 for a long time to come," Tang Changhong smiled and said, "Speaking of which, the level of confidentiality of the H6 aircraft should be higher than that of the J10 and J11." A little higher, right? H6 is not worried about leaks caused by using the D-30KP-3 engine, the problem we are worried about now...is it unnecessary?"

Uh-huh?

Hearing Tang Changhong's words, Academician Liu also reacted: Yes!There is no need to worry about this problem at all!
Speaking of which, if the importance of domestic military aircraft equipped in the next 10 years is ranked, then the importance of H6 should really be ranked in front of the aircraft with the prefix "J", whether it is J10, J11 or The importance of the several J series models planned in the future cannot be compared with the H6. The H6 Liuye is a real magic weapon for the country!

Now that the H6 has used the D-30KP-3 engine jointly produced by Huateng Group and Xifa Factory, if you think about it from this perspective, you should be more worried about leaks.I have been on the tip of my horns before.

Thinking of this, Academician Liu also laughed, and said to Tang Changhong, "What do you mean, Xiao Tang?"

Tang Changhong thought for a while, and then said: "Talk to Mr. Zhang first, and ask him what he means. If Mr. Zhang is willing to accept this project, it would be great. Let's write a report to the superiors later, and ask Huateng Group Participate in this project... Based on my understanding of Mr. Zhang, he should not refuse."

What to do if Zhang Qihang is not happy, Tang Changhong did not say, but based on the understanding of Tang Changhong by academician Liu Daxiang over the years, he has already guessed what the other party thinks: If Zhang Qihang is not happy, then try to persuade him to be happy What can be done?He nodded slightly, and gave an affirmative answer: "Well, I have always believed in Mr. Zhang's awareness."

(End of this chapter)