Chapter 488 Waiting Anxiously (Seeking Monthly Ticket)

In mid-March, the Xinghai Group actually established the project teams for the vacuum tube maglev train and high-speed rail. The number of early project teams was 50 and 30, respectively, and they were all scientific researchers drawn from other idle project teams. Of course, there is not enough manpower for this. Recruitment, and continue to expand from internal personnel.

In 2015, the number of undergraduates and above will reach 3,000, including 500 returnees.

Operators such as junior college and technical school students, as long as they meet the requirements, there is no limit, and thousands of people are recruited every year. The scale of Xinghai Group is expanding too fast, and the personnel and management team cannot keep up.

It is impossible for Xinghai Group to be in a state of expansion all the time, and the number of employees in the company will have an upper limit.

Some backward projects of Xinghai Group will also be eliminated by the market, and will not last forever. For example, the cooling chip of wearable air conditioners, when the profit margin is low, if there is no improvement, the life of this project will come to an end.

During this time, Mu Yang devoted his energy to the aero-engine project.

The three core components of a civil aviation turbofan engine are high-pressure compressor, main combustion chamber and high-pressure turbine. At present, Xinghai Group has solved the manufacturing of core components and structural parts, and also solved the core problem of high-temperature resistant materials.

In the aero-engine assembly laboratory, the main components of an engine have been assembled, but some components are missing.

Mu Yang saw that Manager Han Lihan was instructing his subordinates to do things, so he walked over and asked him, "What's wrong with this engine now?"

Seeing that it was the chairman asking, Han Li said respectfully, "Chairman, there are still more than a dozen parts missing, mainly the parts of the electronic control system. It is estimated that they will be ready by the end of the month."

A civil aviation engine has nearly 20,000 parts and components. The value of blades such as fan blades, compressor blades and turbine blades accounts for 35% of the total value of the engine. Xinghai Group uses metal 3D additive technology for manufacturing. Manufactured by the shaft linkage machining center, this part is 100% manufactured by Xinghai Group. In fact, it is mostly manufactured with metal 3D additive technology, which reduces a lot of costs.

Compressor blades and turbine blades require high temperature resistance, and Xinghai Group uses composite high temperature resistant materials to manufacture them. Like turbine blades, the speed is high, and the weight of the blades must not be too heavy, but the high temperature resistance of light titanium alloy materials cannot meet the requirements, and the high temperature resistance of nickel alloys is too heavy. If there is no metal 3D additive technology, it is impossible to make the Composite high temperature resistant materials required by Yang.

It can be said that high temperature resistant materials are also the most difficult material problem for the engine to solve, and it is also related to the life of the engine.

The value of the expander, shell, flame tube, nozzle, ignition device, etc. of the combustion chamber account for 10% of the total value of the engine. This part is also 100% manufactured by Xinghai Group.

The value of the electronic control system and hydraulic control system accounts for 18% of the total value of the engine. Many of the parts are purchased, and some are self-developed. Because they are non-standard parts, the research and development progress is the slowest. The degree of localization less than half.

Rotor components such as rotating structural parts, shaft parts, and guide accessories, as well as casings, disk parts, ring parts, etc., are also 100% manufactured by Xinghai Group.

Han Li said that there are still more than a dozen parts left, so the material preparation of the parts has reached 98%, which is considered to be progressing very fast.

At least it can be solved, instead of being unable to find a clue, and not even having the ability to produce.

If it were an ordinary company, it would not be able to process the blades.

Mu Yang asked again: "Will the prototype be released at the end of this month and start testing?"

"Our plan at the beginning of the year is to produce prototypes in early April and start testing. At present, if everything goes well, we can start testing at the beginning of next month and proceed as planned." Han Li said, also pointing out that the current work progress is under planning. However, he also has worries, "Chairman, to be honest, I also have a lot of worries. After all, it is the first time we have developed such an advanced engine. I have no confidence in the success of the development."

"Well, I understand, don't put too much pressure on yourself. No one who engages in scientific research dares to say that it can be successfully developed once or twice. We must be patient, resilient, not afraid of failure, and be mentally prepared for failure. .

Not this year, we can try for three years, five years, or even ten years.

But it’s important that we also ask ourselves how much we’ve grown. "

Mu Yang relieved him. He understood Han Li's pressure. He was alone in this big project, and he relied on Mu Yang for all the materials.

If he had made it himself and had a successful experience, his confidence would definitely be stronger.

Mu Yang couldn't explain too much to him. If it wasn't for the technology he bought from the system, he would have avoided a lot of detours in experience, and he wouldn't be sure that he would succeed once.

When the critical moment comes, as the boss, Mu Yang can't put too much pressure on his subordinates, otherwise he will easily panic.

This engine was designed by him himself, and he has seen every important component produced. Now that the large assembly has been carried out, he has not seen any problems, so he can only wait for the test to see the results.

"Thank you, Chairman, for your understanding." Han Li heaved a sigh of relief, with a smile on his face.

"I'm also a scientific researcher. Of course, it's not easy to understand what it's like to be a scientific researcher."

Mu Yang nodded and patted his shoulder.

He has seen the plan, and he can't help with the current aero-engine work. He has done everything that needs to be done, and the staff will assemble it.

Mu Yang asked again: "How much does the whole machine weigh? Have you checked the weight?"

Han Li replied: "At present, there are 1.71 tons of parts installed, and it is estimated to be 1.88 tons after all parts are installed, which is 31 kg larger than the design. If the thrust-to-weight ratio is 8 according to the design, the thrust can reach 15 tons. Chairman, I Very much looking forward to this engine.”

"I also expect that 15 tons is just a conservative estimate. If it does not meet the requirements, if it is lower than 13 tons, it will not be able to be used on the C919. The design of this engine has failed and needs to be redesigned." Mu Yang said, the actual In fact, even if the thrust is only 13 tons, it is the world's top engine, and it is not a failure. It cannot be used on the C919, but it can be used on other lighter civil aviation airliners.

Generally speaking, if there are few engines to choose from, the airliner is designed according to the thrust of the engine, that is, the shell and other parts are designed according to the engine, instead of the C919, everything else is selected, and the engine is selected at the end. This is very difficult. Find a matching engine.

The XH-AN05-01 engine is actually tailor-made for the C919, because the casing and other accessories of the C919 have already been finalized, and Somfy does not know the development activities of the Xinghai Group.

If the XH-AN05-01 engine is successfully developed, except for the C919, when designing models in the future, it must be designed according to the thrust of the XH-AN05-01 engine.

The XH-AN05-01 engine will continue to be optimized, but the main structure will not be easily changed. Once changed, it will affect the whole body, and many verifications are required.

In fact, with the fifth-generation civil aviation engine technology of AN05, the thrust can be stacked to more than 30 tons, and civil aviation aircraft can almost take off vertically, but correspondingly, it consumes a lot of fuel and is uneconomical.

The operating costs of a sports car and a car worth more than 100,000 yuan are definitely different, and passengers do not buy it for flying faster.

It is not used in civil aviation, but the XH-AN05-01J engine can be used, especially for carrier-based aircraft. Greater thrust means greater acceleration and shorter take-off distance. Maybe there is no need for an ejection device, and it can even be used. Carrier-based aircraft designed for vertical takeoff.

With the current technology, it may be possible to take off when it is empty, but when it is fully loaded, even with a catapult device, it is dangerous to take off, and it will fall into the sea if it fails.

Like the J-15, when fully loaded, the total weight is 33 tons. The total thrust of the two WS-10 turbofan engines is only 18.16 tons, and the thrust-to-weight ratio is only 8.

If two engines manufactured with XH-AN05-01J technology are replaced, the thrust-to-weight ratio of the same engine can reach more than 12, that is, the total thrust of the two engines can reach more than 27 tons, and the thrust direction of the engine is downward. Almost ready for vertical takeoff.

The empty weight of the J-15 is 17.5 tons, with less load, it can indeed take off vertically.

Or, if Mu Yang is sure to develop the sixth-generation technology of AN06, he can develop an engine with a higher thrust-to-weight ratio. Using the sixth-generation engine, he can design fighter jets and civil aviation airliners that are fully loaded and easier to take off vertically.

"If it succeeds, GE and RR executives will jump in anger."

"Let's set our sights higher. We not only want to defeat GE and RR, but even far surpass them. Our future goal is the top." Mu Yang pointed to the ceiling with his index finger, "Of course, we must do things in a down-to-earth manner, step by step. .The first engine has not been successful yet, and the eyes are higher than the sky, that's not good."

"I got it."

Han Li not only sees the future of civil aviation engines, but also sees that if the technology is applied to commercial engines, fighter jets will usher in a qualitative leap.

"During this time, collect the problems you have encountered, and give them to me to solve them together."

"Okay, let me hurry up." Han Li felt a little ashamed, and had to rely on the chairman for some technical problems.

He is an expert in aerospace engines. He is 50 years old this year. He was hired to work in Xinghai Group. When he entered Xinghai Group, he passed the test of the chairman again and asked him to be the project manager, which surprised him, but what followed It is also a great challenge and work pressure.

After Mu Yang left, the project manager Han Li called the team leaders for a small meeting. There were 300 people in this project, and there were more than a dozen team leaders.

"You have also seen that the chairman often comes to our laboratory and attaches great importance to this project. We must strive to complete the task smoothly according to the plan and live up to the expectations of the chairman.

Not just for the company, but for ourselves, which is our aerospace business.

Aviation engine is also our dream. I am very eager for our engine to lead domestic aircraft to fly in the sky and defeat the aircraft of Western countries. "

The Xinghai Group does not recommend engaging in retreats. Han Li only said two retreats, reminded the team, and then said something real: "We have manufactured a total of three prototypes, and it is difficult to guarantee that they will be successfully ignited once. There are many problems, and you must be mentally prepared to fail all.

Let's sort out the work at hand and check it several times from beginning to end to see if there are any problems. If there are any problems, list them out. Let's check together, discuss and solve them, so as to avoid encountering them again in the future. If there are any problems that cannot be solved, I will It needs to be handed over to the chairman, and the chairman will help us solve it.

To be ashamed, for such a big project, since the establishment of the project, the chairman has helped us solve many problems, and we have relied too much on the chairman.

Let me remind you again that if some performance parameters are achieved, they should be achieved, and if they are not achieved, they should be raised. Maybe you think there is no problem, but it may affect others. These problems should not be underestimated.

In the laboratory next door, the M8 nuts they bought were changed to another supplier. The same M8 nuts had no problems with the thread, lead and inner diameter, and they could fit the bolts, but the problem was that the thickness of the nuts was different. The outer diameters are different, and as a result, the tooling fixtures cannot be used.

This is just one of the problems. All our purchased parts, even if they are from the same manufacturer, may have different sizes and specifications in each batch. This probability is very high. Delayed the entire production cycle, in our company, this happened not once or twice, but many times.

If there are purchased parts on the project you are in charge of, check the drawings again, maybe there are missing parts.

At ten o'clock tomorrow morning, we will hold a technical meeting to troubleshoot problems, especially materials. I remind every time that materials are the most delaying thing, and it is still the same now, and it takes a lot of time. "

What Han Li said made the atmosphere in the conference room tense, and the team leaders of each project tensed up. If this project is delayed because of my own team, it will be really embarrassing.

Especially the team leader in charge of the electronic control system blushed. At present, it is his progress that has affected the entire progress. After thinking about it for a while, it is better to self-reflect:

"Manager, this is a problem with our group, which has delayed everyone."

"This is not only your problem, but also my problem. Everyone's problem. We are a group. If you have any difficulties, you should bring them up and we will solve them together." Han Li said seriously, "Other people, don't gloat, this It is a group project. Although the project is divided into countless small projects, as long as one small project is not completed, it means that the group project is not completed.

Each group leader talks about the difficulties they are currently encountering, when the plan will be completed, and what kind of help is needed. Time is limited, so don't talk nonsense, and don't hide anything. "

Next, ask questions and discuss together.

After the meeting, the team leaders called the team members for a meeting and ordered them to quickly sort out the work at hand and not to hide it.

Some team members have a mentality, feeling that it is almost enough. Under the team leader's re-emphasis, they have to bring up the problems they found. The team leader sorted out and summarized, and found many problems.

On the third day, Han Li handed over the sorted out problems to the chairman. Mu Yang looked at it and felt that it was necessary to hold a meeting, so he called the team leaders of the project to discuss the problems found one by one.

At the beginning of the meeting, Mu Yang first said: "The Columbia space shuttle crash in 2003 was an avoidable tragedy, but an accident happened before returning to the earth and the space shuttle disintegrated and crashed, killing seven astronauts. Died. The cause of the accident was that the foam fragments hit the wing and damaged the skin.

I don't want our aero-engines to cause serious problems and aviation disasters because of a small problem that we thought we didn't pay attention to. Many of the problems you submitted did not meet the design requirements.

Next, we have to investigate one by one. If there is an impact, then the planned trial in early April will have to be postponed until all problems are eliminated.

After this meeting, you go back to explain to the employees below, sort out the work at hand again, summarize and analyze the seemingly insignificant problems again, and we will go through it again. "

Mu Yang's words put a lot of pressure on Han Li and a dozen team leaders. The aero-engine they developed must be taken seriously. If an aviation disaster occurs due to an engine failure, the problem will be serious. aviation careers shut down.

Next, Mu Yang and the team leaders analyzed the problems that occurred, and they waited for a day before explaining all the problems.

But that doesn't mean it's done. Some issues need to be verified, which takes a lot of time.

Time flies, and at the beginning of April, the assembly of the XH-AN05-01 aero-engine has been completed, but the trial ignition has not yet started, and the problem is still being checked.

Mu Yang doesn't want to ignite, just doesn't want to test before the troubleshooting is completed. Once the test is ignited, if there is a fault, one engine may be scrapped directly. Although there are three prototypes, if all three have problems, they will be manufactured according to the old method. waste time.

In mid-April, Mu Yang personally checked all the problems, and the scientific researchers had collected the information, and it was confirmed that the trial would start.

During this month, he was really in the aero-engine laboratory, and he held summary meetings every day. Correspondingly, these subordinates also learned rare knowledge.

All three prototypes are fully assembled and waiting for trial ignition, but the inspection will continue for the next few days.

The ignition time was determined at ten o'clock in the morning on April 20, only one day away from the ignition time.

All the researchers in the aero-engine project team, as well as Mu Yang, are looking forward to the successful ignition.