The new book is finally 100 chapters.,It feels like it's not easy.,It's a time to celebrate.,Allow me to ask for a recommendation vote.

After lunch, a group of people were about to continue the discussion, and at this time, everyone who went to the running department also returned to the guest house, including Director Bai, who went to the running department of the aviation industry department.

After taking a sip of water, Director Bai consciously began to talk about the situation of going to the running department today, and looking at his rich facial expressions, everyone naturally understood that this time it should not be a big problem.

"If I want to report the project to the ministry this time, this should be the fastest time I can get results. At that time, as soon as I reported the project, the minister was stunned, and it took a long time to recover. But after this slowed down, he began to sell official tones, and everyone probably guessed what idea he had in his stomach. ”

I didn't say it halfway through, it was really appetizing, and Chief Master Yu was the most impatient with this tune. rudely interrupted Director Bai's mind of wanting to sell Guan Zi.

"Don't sell it, hurry up, there is not much time, and we will discuss the selection of new engines later."

Chief Master Yu spoke in front, and the others naturally nodded their heads wildly, indicating that they agreed with what the Chief Master said. Director Bai saw that everyone was so uncooperative, so he could only continue to talk about his follow-up experience.

"Speaking of which, when the minister heard that we had pulled such a big project, he began to make an official tone, and he must have wanted to do something else. However, within two minutes, the phone rang, and it was directly the chief designer at the top who called, without saying anything, and asked us about the project, and the minister was stunned at that time. ”

Speaking of which, a group of people imagined the scene at that time, and they all laughed out loud, and continued to listen after laughing.

"At this time, the minister looked at me, he didn't know the specific situation, so he just gave me the phone and asked me to report the project, you didn't see it, the minister's face was black when he gave me the phone, and he scared me. However, after the chief designer asked me about the specific situation, I talked to the minister on the phone. Then after hanging up the phone, his face changed and asked us to do a good job of the project, and when the time came, we were ready to report, and we had to make a report on the plan with Fengtian. ”

Sure enough, this matter is not what Director Yang expected, and in the end, it is inevitable that he will be cut off, but he is really not afraid of this beard cut off on the surface. According to Director Yang, there are great advantages in the project base this time.

"Okay, this thing is really going according to Director Yang's prediction now, it feels like we are like a group of actors, but if it is still as Director Yang expected in the end, I am still willing to be an actor."

After listening to the witty words of the director of Longyan Factory, everyone laughed and sincerely agreed with this remark, as long as they can win this project in the end, they are willing to be actors.

However, at this time, the director of the Liyang factory is quite worried, it seems that this project will be somewhat estranged from the Ministry of Aviation, and it is strange to find a way to leave the Liyang factory as soon as possible. Now Director Liu of Liyang will naturally not say this, he has to slowly prepare to change places.

The Ministry of Aviation Industry said, and the other departments naturally reported their experiences, but they were all bland, and there was nothing except surprise, like this kind of thing, these are just the ministries and commissions that do the cooperation generally look at the meaning of the ministries and commissions in charge, and the ministries and commissions in charge have not decided to come down, and generally other ministries and commissions will not have a clear answer.

After the matter of the running department is finished, naturally those who go to the running department at noon will listen to the progress of staying at noon to do the project plan design, or Director Bai will ask.

"Lao Yu is the chief designer, tell us what you discussed at noon?"

Chief Engineer Yu briefly introduced the aerodynamic plan and cockpit design plan that were preliminarily discussed at noon, and then the conversation began to mention the engine selection that should be discussed now.

"The specific design of the new machine is like this, and now our biggest problem is the choice of engine, and we have no way of determining which engine to use."

Director Bai listened to the general design of the new machine, and felt that the changes were quite large, but after thinking about it carefully, the technical risks of the actual changes were still within the tolerable range.

"Then there should be no problem with the design of this airframe, and we still need to discuss the engine carefully. However, the premise is that we need to calculate how much money can be invested in the engine of the new machine. ”

Director Bai actually began to calculate this project when he was in Paris, and the most concerned point by Director Bai is the engine of the new machine, knowing the performance of the turbojet 7, Director Bai did not plan to use the turbojet 7 at the beginning, and Director Bai was eyeing the engine of the turbojet 13 in development.

"I think the engine of the new machine is absolutely not enough turbojet 7, I originally planned to use the turbojet 13, but after listening to the changes of the new machine are too big, adding a new large radome, using the lower jaw or air intake on both sides, and the new high-power radar, the current power of the turbojet 13 is probably not enough."

Chief Engineer Yu is doing the overall design of the aircraft, and when the entire fuselage design plan comes out, he has an understanding of the thrust index of the new engine. If the engine of the new machine does not reach a thrust of at least seven tons, it will definitely not be able to meet the needs of the new machine, so the current engine development is the biggest obstacle to the new machine.

Chief Engineer Yu said the data after his approximate calculation: "The thrust of the new machine must reach 7 tons, which is indeed unattainable in the turbojet 13 under development. We need to find another way. ”

Chief Engineer Yu said that it is light, but to achieve it is not light at all, this new machine to achieve such a large thrust must be a large-scale modification of the turbojet 13, now the turbojet 13 is a project in the Liyang plant, to modify the thrust to 7 tons this is absolutely impossible.

Director Bai is the most in favor of the 7-ton thrust that Chief Engineer Yu said, which is exactly in line with Director Bai's calculation, and he naturally has his ideas as an engine.

"This 7 tons of thrust is still the minimum, and I believe that the thrust required for this new machine will definitely be more than that. Now we have to do it, at present, the only engine that can be found in China is turbojet 8, but this obviously cannot be used in the new machine, and there is a turbofan 9 that has design data but is now dismounted. ”

Speaking of turbofan 9 again, the chief engineer still knows some about the data of this turbofan 9, and after carefully reviewing and comparing, he can only reluctantly give up this excellent engine.

"Turbofan 9 is indeed enough thrust, but up to 9 tons of thrust is obviously thrust surplus, plus turbofan 9 is only five thrust-to-weight ratio is too heavy, 1.5 tons of weight to install the new machine, will make the center of gravity of the new machine offset structure will have a big change, so it is necessary to redesign the fuselage interruption, plus the huge size of the turbofan 9 is not possible to install the new machine, which has to redesign the rear section of the fuselage."

There is no need to continue, everyone knows that there is no way to install the turbofan 9 engine, so what else can be done?

At a time when everyone was at a loss, Yang Hui was finally able to put forward his new engine plan.

"In fact, I think that the turbojet 13 engine should be the most suitable for us now, and its design thrust is nearly 0.7 tons less than the thrust we need, and there is still a way to solve it."

If the turbojet 13 can still achieve the minimum thrust required of 7 tons, then it is definitely good news.

Turbojet 13 is still on the side of the Dawn Factory, but it's nothing, there is a need for foreign trade orders at that time, and it is still possible to bring the Turbojet 13 through the above, and the Turbojet 13 will not be produced in Liyang in the future.

The biggest advantage of using turbojet 13 is that it can have a better technical inheritance with the turbojet 7 of the base, so that it can produce qualified engines in the base in a relatively short time.

Director Bai knows Yang Hui best, this guy must have some new ideas, I hope this new idea can be useful and can solve the trouble of this engine.

"Then you can quickly say what this new machine is going to do, if you can, I will immediately report to the above to ask for information about the new machine, the dawn factory has not yet been finalized, but it is not in the way, we must also modify this engine, this is not a problem if it is not finalized."