When Yang Hui put forward the Southwest Science and Industry Standard here, it made Deputy Director Liu of 420 feel quite tricky.

He kept thinking about the specific situation of the 420 factory in his head, and only after thinking about it did he try to reconfirm that he did feel a little incredible about the Southwest Science and Industry Standard that Yang Hui said.

"Mr. Yang, do you really want to lay off one-third of the administrative staff? Isn't this a bit too ruthless, the management of our 420 factory has always been managed by these people, and there is no problem with everyone performing their duties! ”

After saying this, in fact, Deputy Director Liu himself felt a little embarrassed, and he didn't know the situation of the senior management of the 420 factory.

It's just that now because he is also the parent of the 420 factory, and he is also the administrative staff of the 420 factory, this kind of layoff of one-third of the staff, he doesn't know if it will fall on his head in the end, and now he can only strive for relaxation as much as possible.

But this so-called struggle is impossible for Yang Hui to have any room for negotiation.

"This is absolutely impossible to have any room for negotiation, I believe that you, as the deputy director of the 420 factory, must understand what the problem is, and you must know the reason why I did this, so there is no need for me to repeat it again, right?"

For this point just now, Yang Hui is resolute and must not waver in any way, and he is also very decisive at this time, and when he finishes speaking, he stares at the other party, which means that nothing can be changed.

"Well, I will go back and discuss this issue with the factory, after all, this condition is related to many aspects. How could I, a small deputy factory director, have such authority to agree. ”

After saying this with some heaviness, Deputy Director Liu felt even more tired. He knew what he would do if he brought the news back to Factory 420, probably, probably, maybe......

The first informal meeting ended abruptly. However, at this time, Yang Hui also issued the final order, and the issue of time is very, very precious at any time, and the current Southwest Science and Industry is like this.

On the third day after the meeting, the deputy director of the 420 factory, Liu, left in a hurry after the review team passed the compressor disc test manufactured by the 420 factory.

On the contrary, Yang Hui is now a little apprehensive, after all, the final overall finalization test of this core is about to begin, and it will not take long to complete the project test, that is, about three or four days, but this is also quite tormenting.

The core machine is to be tested. All kinds of projects have to come one by one, and swallowing water and ice is a working environment that aero engines often encounter.

However, most of this is to be tested in the overall engine, and for a core machine, this kind of test is relatively open.

An excellent aero engine must take into account various problems when designing, the core aircraft has to withstand all kinds of high temperature, high speed, heavy load environment, and then these miscellaneous small materials are also taken to the core aircraft is a little inhumane.

At this time, the advantages of turbofan engines are reflected, especially turbofan engines with large channel ratios.

These engines are born with a very good ability to resist foreign object strikes, because all the debris entering the engine must first pass through the first level of the fan, and most of the debris is thrown into the outer channel early under the huge centrifugal force of the fan. It is then discharged from the outer channel.

In fact, most foreign objects can be thrown out of the external channel, and they can really enter the core machine, and there are very few that further threaten the work safety of the core machine.

Naturally, in the test of the core machine, the requirements for swallowing water and ice are not too strict.

Of course. This does not mean that there is no need to test, it just means that the requirements for testing are relatively low, and if the minimum requirements are not met. Then it definitely doesn't work.

In this way, the core machine was tested to swallow water and ice. This kind of testing also requires specialized equipment to be performed, but this is still possible at 624. This place is supposed to be home to 80 percent of the gas turbine test equipment that the Republic can manufacture independently.

After a half-day test without accidents, the water and ice swallowing tests of the entire core machine were completed.

"Very good, the core machine swallowing water and sand swallowing tests have been completed, and the results show that they fully meet the standards, we are strictly in accordance with international standards, but you are still doing very well, and you must be applauded."

Laughing and talking, Wu Lao communicated with the expert group personnel next to him, and the result was naturally no problem, so he was satisfied with the hook behind the water and ice swallowing test items, and wrote the actual data just tested, showing the rigorous work habits of the older generation of scientific and technological workers.

When the relatively simple water and ice swallowing tests are completed, the main event is the sand swallowing test, which is definitely no better than water and ice swallowing, and this sand swallowing test is definitely a big deal.

In many engine accidents, it is caused by sand swallowing, and the 404 engine fire problem mentioned in the past is still because of the deformation of the blades caused by sand swallowing, and finally caused a tragedy.

In fact, there are many strange things about engine sand swallowing, such as: there is a large amount of sand and gravel in the compressed flow of the engine, and these air flows containing sand and gravel are introduced into the porous air film cooling of the turbine blades, and the sand and gravel will block those small air film cooling holes.

Almost all of the cooling methods of turbine blades use air film cooling technology, think of the result of this cooling air hole being blocked......

It must be that the cold air used to cool the turbine blades cannot effectively cool the turbine blades, resulting in the blades being burned out by high temperatures.

The blades burned by high temperature will undergo huge changes in the mechanical properties of the metal, which is not a good one, and the turbine blades will break, and finally it will be a major accident.

The harm of this kind of sand swallowing is so great, and it happens that these small sand particles are very difficult to be thrown into the outer channel under the action of the centrifugal force of the high-speed operation of the fan.

There will still be a part of it that will be sucked into the inner channel, and finally into the core machine, as for the question of how many grains of sand will be sucked in, this is generally related to the channel ratio of the engine.

Now, under the attention of the audit team, the core machine was started again, and in the simulated high-wind and sand environment, a large number of sand particles were sent into the incoming flow environment of the core machine.

As time passed, the core machine used for the sand swallowing test had to run for dozens of hours before the preliminary results could be obtained. (To be continued.) )