Rule department scholar

The engine has just been assembled, and the first debugging will definitely fail. Even if it is only during the installation process, there may be problems due to improper operation, let alone parts.

For example, if there is a supercharger blade that does not work, it may be a problem with the installation, or it may be a problem with its own weight.

Both are possible.

This is out of their complete control.

Zhang Gangchuan was also very satisfied with the progress of the work. He suddenly said, "I heard that Academician Zhao has also started. It's really fast, I didn't expect it!" He shook his head with exclamation.

That's a real sigh!

When assigned to the commissioning of WZ-A2, Zhang Gangchuan felt that the aviation group took care of his own team. After all, they are the "old team" of the group and have rich experience.

The original design of Zhao Yi's team, WZ-A1, can be said to be a top-end version, aiming at the top-level J-31, but the design drawings of J-31 have not been completed, and the engine prototype manufacturing and debugging work is equivalent to is delayed.

Zhang Gangchuan believes that it is the consideration of the group's top management.

The design of the WZ series engine is very high-end, but too high-end is not necessarily a good thing. For example, more problems will be encountered in manufacturing and debugging. The low-profile version of WZ-A2 can be successfully debugged, and then the WZ-A1 prototype will be manufactured for debugging. , the work arrangement is more reasonable, and the progress will definitely be faster.

Of course.

These cannot be said outright.

Anyway, that's how Zhang Gangchuan understood it, but what he didn't expect at all was that Zhao Yi was able to stop the aircraft design work, and even came up with an amazing design that impressed the group's senior management and the military.

He didn't participate in that meeting, and he didn't know how advanced the Warhawk-1 was, but he knew that he had completely changed his mind after seeing the group's high-level support for WZ-A1.

However, Zhang Gangchuan still believes that WZ-A2 prototype debugging is more important and the most core work.

No matter how amazing the design of a fighter jet is, it is just a design. I don’t know how long it will take to create it. It is even said that most of the high-end designs can only stay on paper due to various reasons.

The WZ-A1 engine is also too high-end, with a lot of designs, and the demand is too high. Even if the components are "put together" in front of you, and the whole is glued together to assemble the engine, there will be a lot of problems in debugging, and even some problems that cannot be solved at all. question.

The WZ-A2 engine is different.

Because many high-end designs have been modified, the difference between WZ-A2 and WZ-A1 is very large. There is no design that is far beyond the manufacturing capacity, so there will naturally be no major problems such as "unmanufacturable".

After the WZ-A2 engine is debugged, it can be assembled on the J-20 fighter. Even if it is assembled on the J-15 again, it is enough to support the group company to continue to invest, so that the WZ-A2 engine can strive for mass production.

WZ-A2 engine, the prospect is bright!

And the WZ-A1...

"Tell me, how long will it take for them to achieve their first test flight?" Zhang Gangchuan asked Zhou Kai thoughtfully.

Zhou Kai sneered and said, "I think? Three years, four years? Maybe it won't be finished. It's still far away. Our Kunlun has been used for two years, and the 'No. 1' is so high-end..." He suddenly thought that he couldn't put Without saying anything, he turned to say, "However, academician Zhao is really strong, and maybe some difficulties can be overcome."

"So, three years? If you can reach that step in three years, it will be really amazing. That design is really unimaginable!"

"But it can be faster. For example, we have completed the first stage of debugging, and we will take a group to go there..."

Zhang Gangchuan nodded and continued to ask, "What about us?"

"One year is enough!"

Zhou Kai said confidently, "We have experience, but the technicians are not enough. After all, the WZ series is not designed by us."

Zhang Gangchuan nodded and said, "It's not our design, but when it comes to debugging the engine, we are the most professional. One year... I think it can be made shorter, maybe ten months?"

"I hope, anyway, try my best!"

"Do your best!"

……

When the Kunlun engine set was put into the commissioning of the WZ-A1 prototype, the WZ-A1 of the Warhawk engine set was also assembled.

The assembly completion time of WZ-A1 was a bit slower than expected.

The reason lies in Zhao Yi.

Zhao Yi's plan is to come to the factory to participate in the debugging work after the prototype assembly is completed. Later, because "Forbes" broke the news about his property, he was always ridiculed by people he knew, and a lot of troubles came to him. Came to the factory side.

When he arrived, he found that he had arrived early and was right.

During the assembly process of the prototype, Zhao Yi discovered many problems. For example, in the No. [-] combustion chamber that was delivered, the oil delivery pipe was made narrower, and the difference was not that big. Oil test, the gap came out immediately after a period of time.

This is not a big problem.

The biggest problem that Zhao Yi discovered was the cracking of the two turbine blades, because the manufacturing requirements are relatively good. The turbine blades are directly formed in one piece, and the dense holes in the blades can easily cause quality problems in the blades. The factory inspection is also difficult. It can't be that fine, but fortunately, there are a few extra parts, so it's easy to replace two turbine blades.

Although most of the problems found were minor, the concentration of minor problems was enough to cause the assembled prototype to stop running at the very beginning of the test.

After eliminating the problems of each component, there are still many problems in the assembled engine, the most important thing is the coordination of each component, because there is a performance gap between the manufactured components and the original design, and the gaps between the various components vary. Not the same, it leads to coordination problems. .

When the prototype was assembled and was about to start testing, Zhao Yi walked around the engine and suddenly said, "Remove the compressor."

"what?"

Several engineers around were stunned.

Zhao Yi continued, "I tell you to dismantle it."

The others didn't know what was going on, but the engineers still felt that after removing the compressor, it was already afternoon, and the planned morning commissioning would definitely not be completed.

After the compressor was disassembled, Zhao Yi asked someone to remove a supercharger blade, and used smelted raw metal materials to block the holes inside the blade, and then polished it carefully before reinstalling it on the engine.

This operation is incomprehensible.

Zhao Yi explained, "After thinking about it carefully, the performance index of the compressor is still too high, and it may put pressure on the air release hole. If it is at a high power point, there may be a risk of blowout."

"Explosion, so serious?"

Blowout means that the pressure inside is too high, and the vent valve is directly pushed open, so that a large amount of high-pressure and high-heat air rushes into the vent hole, which will directly cause damage to the hole.

If it is more serious, the high-pressure, high-heat impulse recoils back to the front end of the engine, which will cause damage to the entire engine.

This matter is too serious.

Zhao Yi must point it out in advance, otherwise it will definitely affect the progress of debugging, and there may even be casualties.

It took more than a day to replace the blades of the compressor, and it was the morning of the third day to reinstall them.

All personnel are surrounded in the distance.

When the running test was about to start, Zhao Yi went to the engine again, and circled around the engine several times, which also made many people nervous, lest they hear some problems again, and then disassemble the engine...

Fortunately, Zhao Yi didn't do that.

He waved to the people in the distance, and immediately walked over, leaving only the engineering staff in place, and said, "Let's start!"

"call!"

Everyone present breathed a sigh of relief.

"Testing begins!"

"Prepare!"

"ignition!"

The running test of the engine did not have such a complicated command, but after most of the personnel left, the engineering personnel controlled the engine to be placed in a suitable position, and used the high-pressure fan to simulate the fast flying wind in the air, and then went to a distance to control the official ignition.

"Boom! Boom! Boom!"

The noise of the aero-engine is unavoidable, and the huge noise immediately fills the entire space.

When the people around heard the 'boom, boom', they became even more excited, because the continuous boom meant that the engine was running normally without any problems.

After the engine is officially started, you can only see the flames sprayed from the back, and the sound is continuous, but the decibels of the sound have decreased significantly, indicating that the engine has finished warming up and entered the process of normal operation.

Some people clapped their hands.

Soon everyone applauded, with excitement on their faces, because the scene in front of them was already something to be proud of.

This is the first test!

Most of the engines are tested for the first time, and it is already very remarkable that they can be started. WZ-A1 is a very high-end engine. It's hard to believe that they say that a good start is half the battle, and they are looking forward to the completion of debugging.

The engine is scheduled to run for about half an hour, and once in a while it will strive for maximum power.

This is a difficult time.

When rushing to the highest power, the engine is likely to fail.

In this regard, the members of Yuan Haitao's team have a great say. Many of them have participated in the testing of the Kunlun engine. Not to mention the first test of the No. [-] engine, before the No. [-] engine was moved to the power engineering laboratory, they have not yet solved the maximum power. In the event of a problem, when the No. [-] machine was tested, the highest power test was simply not performed to prevent any serious accidents.

After the engine was running for a while, everyone looked at Zhao Yi who was standing in the middle.

Zhao Yi waved his hand indifferently and directed, "Start the highest power!"

Everyone's hearts were raised accordingly.

"boom!"

As the engineers adjusted the wind speed and fuel delivery control, the engine suddenly made a huge roar, which lasted for more than a minute.

Only then did Zhao Yi command, "It's ok."

The engineering staff immediately lowered the parameters, and the roar of the engine also slowly decreased.

The next step is the 'high deceleration' test.

The 'high deceleration' test is to simulate the rapid deceleration of fighter jets. The design of WZ-A1 is to almost stop the fuel delivery, and release the high-pressure gas in the compressor through the hole to the jet port to form a certain power, while ensuring the stability of all parts of the aircraft. normal operation.

The advantage of this method lies in 'saving fuel'. In addition, only when the main jet is not working can the maximum deceleration be achieved, and it can also improve the flexibility of the fighter jet when decelerating.

In the 'high deceleration' test, you are not afraid of any major problems. The main thing is to get various parameters of the engine operation during the test.

The same goes for the rest of the projects.

Let the engine run in various situations in the air, test the thrust provided by the engine, the temperature of each component, etc., and record the fuel delivery speed, wind speed and other data during the process.

These data are what the test wants to get.

The process of completing the engine is to let all the data strive to reach the most perfect balance point, and it is also necessary to adjust the performance of each component and strive to make them run more harmoniously.

Of course.

This is the case without major problems with the engine.

If the engine stalls in a certain test session, or the thrust provided is abnormally reduced or increased, it is not only to coordinate the performance of the components, but also to solve the problem.

The reason why the Kunlun engine is slow to improve is because there are always various big problems. Every big problem comes out, and it takes a long time just to find out the problem and demonstrate it.

Half an hour passed quickly.

After the last test was over, Zhao Yi decisively announced, "Let's go here!"

The engineer in charge of the control immediately stopped the oil delivery, and after the engine had been running for a while, the roar gradually stopped.

Zhao Yi looked around and clapped his hands with a smile.

"Hula~~"

Everyone applauded immediately, and excitedly commented, "This is the first test, it's perfect!"

"Didn't see any problems!"

"When I reached the highest power, my heart felt like it was going to pop out, and I was afraid of suddenly blowing up..."

"Unlucky! Don't say such things!"

"Anyway, it was a success!"

"I have been in the Kunlun team before, and I have participated in several tests, and I can find problems every time. I feel that the prototype we have just assembled is already more perfect than the Kunlun No. [-] machine."

"I can't even imagine it!"

"The first test was so successful, isn't our work fast? How long do you estimate it will take until the test flight is over?"

"Three months?"

"No! Two months is enough!"

"I've said that the No. [-] Kunlun engine is not as perfect. When Kunlun built the No. [-], the test flight was over..."

"So I think that you can apply for a test machine now!"

Chapter 484 If the situation is good, go to heaven!

Before the design of the WZ series, that is, the Warhawk series of engines, the only aviation turbofan engine independently designed and developed in China was the Kunlun. Without other engine development for comparison, the engine development process and progress can only be compared with the Kunlun engine.

The "flight test" of the Kunlun engine was carried out two years after the first prototype was assembled.

At that time, the Kunlun was able to operate normally, and there were no serious problems when it was operated at ordinary power. The number of tests for the highest power operation was not many, and the stability still needs to be strengthened. However, the parameters and indicators during operation were normal. New milestones and entering a new stage are actually just for continuous improvement, and test flights can help detect more problems.

If we refer to the progress of the Kunlun engine to judge the progress of WZ-A1's debugging and improvement, WZ-A1 is indeed ready for test flight.