Set sail1992

Chapter 1117 NO.2
Zhang Qihang was very honored to be able to watch the first flight of Master Liu, but what he didn't expect was that when the event was over and he and Mr. Feng were about to get up and go back, Gao Dafei brought some people to find him...

Among the people who came here, apart from Gao Dafei, there were many well-known names, such as Liu Daxiang and Tang Changhong. Seeing these backbones who had made great contributions to China's national defense construction, Zhang Qihang hurried forward: "Liu Daxiang Hello sir, hello Mr. Tang, hello Mr. Gao..."

For these people, Zhang Qihang has only respect in his heart, they are the well-deserved backbone of the nation.

"Mr. Zhang, you are good too," the future Mr. Tang was in a very good mood, he shook Zhang Qihang's hand vigorously, and said with a smile: "Mr. Zhang, I heard that you have made some good things again." , I’m here uninvited.”

Understood!
Considering the future status of Master Tang, and looking at Liu Daxiang, Gao Dafei and others beside him, it is self-evident why he came here.Nodding with a smile, Zhang Qihang said, "Leaders, you all came here for our D-30KP-4, right?"

"Yes, Mr. Zhang is really quick to talk," Mr. Tang said with a thumbs up, "Mr. Gao found us after he left you yesterday and told us that your group still had a D-30KP-4 at the beginning." Mr. Liu and I were very excited when we heard this, but what Mr. Gao said was vague, Mr. Zhang, can you explain it to us in detail?"

What Zhang Qihang didn't know was that after Gao Dafei told Liu Daxiang and Mr. Tang about Huateng Industrial Group's plan for D-30KP-4 yesterday, Mr. Tang, who had already started the preparatory work, listened with all his eyes. Well, around 2000, when the country was conducting pre-research and demonstration work on large jet transport aircraft, one of the key points of discussion was the engine. After all, no matter what kind of aircraft you design, it is impossible to fly without an engine. After repeated discussions and demonstrations, everyone’s unanimous conclusion is that in this project, the best aero engine we can obtain and meet the requirements of this transport aircraft is Lao Maozi’s D-30KP-2 .

But no one expected that not long after this seminar, the D-30KP-2 developed by Huateng Industrial Group based on the D-30KP-3 suddenly turned out, not only increased the thrust by nearly 10%, but also reduced the fuel consumption. It has been reduced a lot, so what else is there to say?The entire Universiade team immediately adjusted its strategy and chose D-30KP-3 as an alternative—this alternative is not an ordinary alternative, but chose D-30KP-2 as the first choice and D-30KP-3 as the backup, but If D-30KP-3 successfully completes the airworthiness certification, then the future Universiade will list D-30KP-3 as the first choice. From this perspective, it is not impossible to say that D-30KP-3 is "quasi first choice". .

As the D-30KP-3 engine is undergoing airworthiness certification at an unimaginable speed, everyone's confidence in D-30KP-3 is also increasing. In addition, the Universiade project has not yet been officially approved. In the hearts of the entire team headed by the chief engineer, everyone has begun to regard D-30KP-3 as the preferred power system for future domestic large jet transport aircraft.

可谁没想到呢，就在这个时候，华腾工业集团竟然还有这么一个惊喜，他们还有一个以D-30KP-3发动机为基础、将继承自D-30KP-2那75%的零部件进行优化的D-30KP-4方案！

According to Gao Dafei, the D-30KP-4 scheme not only increases the thrust to about 145 kN, but also further reduces the fuel consumption due to the further increase of the bypass ratio to about 4.2.

Hearing this news, Tang Zongshi and others were very excited: the maximum thrust of D-30KP-2 is about 120 kN, and the total thrust of the four engines is 480 kN, and if D-30KP-4 is selected, It is equivalent to increasing the total thrust of 100 kN, which is almost equivalent to installing an additional D-30KP-2 engine for the future Universiade!

This also means that Huaxia will produce a large jet transport aircraft with a maximum load of 70 tons, while the maximum load of your country's C-17 transport aircraft is only 77 tons. China's first domestically produced large jet transport aircraft The performance will be very close to the Mi Army's C-17!

In this way, it is not difficult to understand why Master Tang and others came to see Zhang Qihang in such a hurry. It is really important for Master Tang, the entire Universiade team, and even China's national defense construction. The importance of the 30KP-4 engine cannot be overstated.

It turned out that it was for such a small matter...

"Of course no problem," Zhang Qihang nodded happily: "Tang Gong, what do you want to know... Well, come on, everyone, sit down first, let's sit down and talk."

Hearing what Zhang Qihang said, everyone realized that everyone was still standing at the moment, and hurriedly took their seats.

After everyone took their seats, Zhang Qihang asked Tang Changhong, "Mr. Tang, what do you want to know?"

The future chief engineer Tang was also not polite to Zhang Qihang, and asked directly: "Mr. Zhang, can this D-30KP-4 really reach a thrust of 145 kN?"

Zhang Qihang nodded, shook his head again, and said, "145 kN is just a relatively conservative figure. According to the preliminary estimates of Mr. Igor Yaroslavsky and others, after all, this plan is not ready to be implemented, so everyone More of it is actually out of hobbies, I just said some simple calculations..."

Speaking of this, Zhang Qihang looked at everyone, implying: If I say this, everyone understands, right?
Everyone nodded, of course they understood.

Zhang Qihang then went on to say: "Because we didn't know the domestic level and technical reserves in terms of materials and metallurgy at that time, so a lot of data in the plan were based on what our group knew and came into contact with, but in the past few years , especially through cooperation with our Xifa factory, we know how deep our country's technical reserves in the field of materials are, so there is still a lot of room for optimization in the D-30KP-4 plan..."

Speaking of this, Zhang Qihang thought for a while and said: "Probably last winter, I once chatted with Mr. Igor Yaroslavsky about D-30KP-4. At that time, Igor Yaroslavsky Mr. Slavsky once said that if it is based on the domestic material technology and processing level he has learned now, the D-30KP-4 plan can be further optimized, at least the bypass ratio can be further expanded to 4.3 to 4.4, and the maximum The thrust should be able to reach the level of 150 kN."

That's it!

Zhang Qihang's words made everyone shocked by the huge improvement potential of D-30KP-2, but at the same time they took it for granted: Right, Huateng Industrial Group was specifying the technical solution of D-30KP-4 at the beginning... this solution should be It's version 1.0 D-30KP-4... At that time, Huateng Industrial Group was still a purely private enterprise after all. It didn't understand the country's technical reserves in aviation technology and aviation materials, so the plan was relatively conservative. This is understandable.

但这几年，华腾工业集团与西飞集团下属的西发厂进行了深入的合作，双方甚至还合建了未来的D-30KP-3发动机生产工厂，对国内在航空发动机材料、技术和加工能力的水平有了更深入的了解，那么2.0版本的D-30KP-4技术方案自然也就应运而生了，而且2.0版的D-30KP-4方案一定比1.0版的D-30KP-4方案更厉害就是了。

Tang Changhong naturally understood this point better. His eyes lit up immediately, and he asked Zhang Qihang: "In this case, 155 kilonewtons shouldn't be the greatest potential of this new solution D-30KP-4, right?"

Zhang Qihang is still very rigorous: "There is no scientific and reasonable plan, it's hard to say, but..." At this point, Zhang Qihang changed his tone and said: "But I personally think that the maximum thrust is from 150 kN to 160 kN It's all possible."

"That's right," Tang Changhong nodded again and again, and then excitedly asked Zhang Qihang: "Mr. Zhang, do we have any idea to start the D-30KP-4 plan?"

Following Tang Gong's words, everyone's eyes immediately fell on Zhang Qihang.

Zhang Qihang did not answer Tang Changhong's question, but after pondering for a while, he asked Liu Daxiang: "Academician Liu, as far as I know, among our power options for large transport aircraft, there is another option called WS20 engine." right?"

Liu Daxiang was a little surprised: "Xiao Zhang, have you heard of WS20?"

The reason for the surprise is that the current WS20 has not been formally approved, but is only an idea of ​​the "Taihang" team. A turbofan engine with a large bypass ratio is mainly equipped with the country's future large jet transport aircraft.

"Is that so..."

Liu Daxiang nodded: "How should I put it, our 'Taihang' team does have such an idea, but up to now, it's just an idea, don't say when the project will be approved, you said this plan is from the 'Taihang' design team Small talk' is fine."

Zhang Qihang nodded: "I've heard people say this before."

"Understood, don't say that you can't hit it, it's okay if you say it's nothing." Liu Daxiang smiled and waved his hand: "From my personal point of view, I really hope that you can use the D-30KP-4 plan In this way, we can devote all our energy to developing 'Taihang A' and the future 'Taihang B' and 'Taihang C' instead of WS20."

Zhang Qihang was really shocked by Academician Liu Daxiang's words. He asked Liu Daxiang in disbelief: "Academician Liu, do you want our Huateng Group to develop D-30KP-4?"

"Isn't this obvious?" Academician Liu Daxiang said, "For our country, is the 'Taihang' series or WS20 more important? With 'Taihang', Chengfei's J10 series, Shenfei's J11 A series of fighter jets can completely solve the problem of "heart disease" and truly realize national defense independence. As for WS20, even without our WS20, wouldn't you still have your D-30KP-3?"

Understood!
Hearing what academician Liu Daxiang said, Zhang Qihang really understood that the appearance of the WS20 engine was actually a forced result:
In the original history, if the "Taihang" engine team led by Academician Liu Daxiang had to engage in WS20, because they did not engage in WS20, the "heart" of our domestic large jet transport aircraft would always be controlled by others, but from the perspective of Academician Liu Daxiang For them, this is actually distracting their energy, they don't want to do it, but they can't help it;
But now in this time and space, the situation is different. The airworthiness certification work of D-30KP-3 is going smoothly. According to the current progress, by the end of next year or the middle of the next year, D-30KP-3 will be able to complete all airworthiness certification. Work, and officially obtained the airworthiness license issued by the state. As a medium bypass ratio turbofan engine with more advanced performance than Lao Maozi's D-30KP-2, the D-30KP-3 engine can not only be used as the core power of the H6, It can also be used as the power of the future domestic large jet domestic transport aircraft. In this way, the domestic large jet engine even has a wider choice: from Russia's "original" D-30KP-2 to the domestic D-30KP-3 , can meet the power requirements of domestic large transport aircraft, not to mention that there is now an extra D-30KP-4 that is still on paper.

Under such circumstances, Academician Liu Daxiang naturally has no motivation to engage in WS20: Since Xiaotang and your team have so many engines to choose from, what else should we mix? Let’s concentrate on our "Taihang" series. .

On the contrary, Academician Liu Daxiang said to Zhang Qihang and Xifei’s comrades after he finished speaking: “Comrades, some comrades suggested that we engage in WS20. "The progress of the series is good now. Since Huateng Group still has the D-20KP-30 plan, I think our 'Taihang' team can devote more energy to the 'Taihang' series engines..."

Speaking of this, he looked at Tang Changhong and Tang Gong, and said kindly: "Little Tang, I think you can use D-30KP-3 as your first choice and D-30KP-4 as your backup. If D-30KP-4 It’s really amazing to be able to reach a thrust of more than 150 kN, and you don’t have to bother to build a dojo in a snail shell when designing.”

Zhang Qihang was a little confused: I haven't said that I want to build D-30KP-4, so this has become an option?

Tang Changhong, on the other hand, nodded immediately: "I think so too..."

After finishing speaking, he turned his head to look at Zhang Qihang, and said, "Mr. Zhang, when you have time, can I go to your company to learn more about the D-30KP-4 plan?"

In a daze, his D-30KP-4 plan aroused the interest of the future chief designer of the Universiade in China. Zhang Qihang was more than happy. He nodded immediately: "Of course it's no problem, we welcome it."

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

An hour later, Gao Dafei, Tang Gong, Academician Liu and others were sent away. Zhang Qihang supported his head and looked at Mr. Feng: "Mr., I think my head is a little dizzy. Why is it so unreal?"

The old man is actually a little confused at the moment, he is very light at the moment, after hearing what Zhang Qihang said, he also said: "It's not just that you think it's a little unreal, I also think it's unreal, our group not only wants to To produce engines for the H6, the future large transport aircraft will also use the engines developed and produced by us?"

For the sake of his career, Mr. Feng feels that his life is worth it!

(End of this chapter)