Chapter 91: We're All Under Your Command! (Add more for the helm master FHTVBN)

Yang Fenghata looked at Chang Haonan, who had been bowing his head and contemplating just now.

The latter had been looking at the raw data retrieved from under the 01 verification plane since he was first on the plane.

He was tempted to say that the Turbojet 14 was not just a design issue.

Because he did a simple calculation last night, and through the comparison with the flight record data just now, he found that although the compressor structure of the turbojet 14 was very heavy, the designer obviously knew this, so he still left enough surge margin at the beginning.

On the general characteristic curve of the compressor, the distance between the common working line and the surge boundary line is the surge margin of the compressor, which reflects the stable working range of the compressor.

Perhaps due to the choice of a more conservative common line of work, the Turbojet-14 was not bad in this regard.

However, when the No. 01 prototype was quickly rewinding, the instability of the working state still exceeded the original design threshold, so it induced surge.

Of course, from the perspective of surge control, as long as the surge margin is stretched to a large enough level, the occurrence of surge can be avoided after all.

It's just that the surge margin is like the body's immunity, and the cause of the extremely unstable engine operation that everyone doesn't know is the same as a pathogen.

Improving immunity can certainly prevent illness to a certain extent, but it is by no means a cure, and if the pathogen cannot be eliminated, the risk is still there.

And it's not enough to solve the problem.

But before he could come up with a clue, he heard Yang Feng's question:

"Comrade Xiao Chang, do you have any views on the improvement of the turbojet-14?"

Chang Haonan didn't expect that he would be pointed at so bluntly, it seems that Yan Zhongzhong is indeed quite anxious.

So he had to put aside further things for the time being, and solve the problem of burning his eyebrows first.

When a person has a fever of 43 °C and is about to see his grandmother, the most important thing is naturally to cool down first, and the root cause can be done slowly.

"Well, Mr. Du should have told you before, I have indeed studied the control of the internal flow separation of the impeller machinery."

"I have seen the research of Professor Wang Zhongqi of Bingcheng University of Technology, and the circumferential bending of the blade can well control the secondary flow in the blade channel, so as to control the flow separation, so I am ready to start from this aspect, but ...... More adequate trial data are needed. ”

The people who were still sitting around a small conference table just now heard Chang Haonan's statement, how could they still sit still, and they stood up almost at the same time.

"What about the specific experiments, and ...... What do we need to do to prepare? ”

If someone else had said that sentence, it should not have brought about this reaction, after all, the experimental cycle related to compressors is long and costly, and the term "sufficient" data generally means that it will take months or even years to obtain.

But Chang Haonan is different.

He's done so many miracles in the last two months that everyone has almost forgotten about the experimental cycle in him.

Suddenly, a few people stood up in a row, but Chang Haonan, who was propped up on the table with one hand, jumped, and after a short hesitation, he had no choice but to stand up.

So there was a strange scene of a group of people standing in a meeting in the small conference room.

"At present, the research on the influence mechanism of bending and sweeping blades on improving the performance of compressors is relatively qualitative, and there are differences in the flow conditions of transonic and supersonic compressors, so I need to study the stacking laws of bending and sweeping blades separately based on the original design of vortex jet 14."

"After obtaining the regular results, the top sweep modification and the bottom forward bending modification are carried out, and the design scheme of different sweep and bending is obtained by changing the sweep height and sweep angle, bending height and bending angle, and then the optimal comprehensive improvement results are selected through numerical simulation and applied to the blades of the high-pressure compressor."

In fact, this idea is similar to Chang Haonan's J-7 improved design plan when he first crossed over, which is to find the law first, then make a plan according to the law, and finally find the best in the plan.

It's just that this time, both in terms of workload and the importance of the work, is far more important than before.

So he needs the help of more resources.

"The first step is to study the law, which can be carried out simultaneously through numerical simulation and experiments to speed up the progress, and the third step is the same, but there is no shortcut to the design scheme in the middle, which requires considerable manpower, and the testing process also needs to produce physical objects, in this regard, it requires the comrades of the 606 Institute and the 410 factory to cooperate in the division of labor."

In fact, it is to let a large group of engineers complete the work previously completed by Zhou Shuwan and Zhang Man.

Yang Fenghata looked again at Yan Zhongzhong on the other side, as well as Zhong Shihong, the head of the technical department of Factory 410.

"If you follow Comrade Xiaochang's plan, then you need to mobilize some people from your respective units to accept his command."

Yan Zhongzhong and Zhong Shihong glanced at each other.

The two have been working in this field for many years, so they naturally know that the division of labor and cooperation in the factory is actually a difficult job to complete, not to mention that Chang Haonan may not have any experience in this area at all.

The engineers of the 606 Institute can say that they have basically heard of Chang Haonan's name.

But the skilled workers of Factory 410 are a completely different system, and they may not know who Chang Haonan is.

"Mr. Yang, if you just transfer people to this Comrade Xiao Chang, I'm afraid the effect will not be very good."

So after a short period of thought, Zhong Shihong was the first to speak out about his concerns.

The main thing is that he himself was parachuted into the 410 factory from outside, and many management problems are personal experience.

Factories are a bit like troops, workers and soldiers, not necessarily of a high level of education, but with their own internal chain of contempt.

Fortunately, Zhong Shihong was born in welding, and finally relied on a few unique skills to gradually convince the whole factory of him.

But he looked at Chang Haonan's white and clean appearance, probably not like he knew how to turn, mill, grind, boring, forging and welding.

"What does Minister Zhong mean ......"

"I think, in terms of production and manufacturing, it is better for you to take the lead and directly set up a research team, with you as the team leader, Comrade Xiao Chang as the deputy team leader, and I work with Mr. Yan as a team member, directly under the command of Comrade Xiao Chang!"

"This ......"

Rao is Chang Haonan was also shocked by this proposal.

He did want to make a breakthrough in management ability, but this breakthrough seemed a bit too big.

From the 6 people in Guan Lin Shikuan's group, he directly crossed over to Guan 606 and 410 Factory?

Although only temporarily.

"I think it's worth trying."

Unexpectedly, Yan Zhongzhong next to him also nodded: "Comrade Chang Haonan has a deep knowledge in the numerical simulation of separation flow, and I have been throwing away this aspect for more than ten years, and I just want to pick it up." ”

"I ......"

After hearing the statements of the two, Yang Fengwan was naturally quite happy, and didn't even ask Chang Haonan himself for his opinion, but walked over and patted him directly on the shoulder:

"Then these two old fellows of mine will all be under your command in the future!"

(End of chapter)