Chapter 1299: Enjoying the Joy of Academician Chang

"It really works!"

Behind the goggles, Ma Xiaoyu's eyes flashed with excitement.

If it weren't for the fact that there was a task at hand, I might have jumped right up.

God knows how much hair they would have to lose in order to make the tail nozzle invisible without a microwave anechoic chamber.

Good now.

Get to the root of the problem directly.

Just when his breathing became increasingly rapid, and he even began to imagine what the next generation of fighter jets equipped with new aero engines would look like, a deep voice suddenly came from behind him:

"Pay attention to adjusting the test position!"

As someone who had experienced difficult times, Liu Yongquan was keenly aware of the excited state of mind of the young man in front of him, so he gently put a hand on the latter's shoulder to signal him to stay calm.

The interaction between the engine jet and the outside atmosphere will form a series of barrel-shaped jet flow field core areas, and between each two barrel-shaped core areas is a strongly compressed normal shock wave, which is the Mach disk.

The farther away from the nozzle exit, the lower the intensity of the normal shock wave and the increase in jet temperature and pressure caused by it will affect the generation and distribution of plasma.

Therefore, the data at the center of the tail nozzle is qualified and can only prove the existence of high-density plasma.

To truly enter the application stage, it is necessary to construct a plasma distribution field under natural conditions just like understanding the flow field.

Ma Xiaoyu took a deep breath and calmed down a little.

But before he could make any move, a little old man who had been standing silently behind Liu Yong shouted anxiously:

"Quickly, withdraw the No. 1 probe and switch to cleaning. The No. 2 probe is connected to the differential amplification circuit and enters 80cm, point B!"

"Yes, probe No. 1 is withdrawn..."

After repeating the password, Ma Xiaoyu quickly selected the probe number, calculation method and measurement location on the operation interface, and then pressed Enter.

The drive motor located above the ground platform quickly started working, slowly lowering the other probe to the working position, and at the same time retracting the previous probe into the storage chamber for cleaning——

Because the airflow energy at the exit of the engine nozzle is too high, the charged particle flow received by the windward surface of the probe is not a simple heat deposition, but will generate a boundary layer around it, thereby forming a detached shock wave and disturbing the flow field. and particle distribution.

In order to ensure the accuracy of the results, too many probes cannot be placed at one time.

The engine jet will inevitably contain some incompletely burned solid particles of the charge, so a single probe needs to be cooled and cleaned after working for a period of time.

If you want to achieve continuous testing without a window period, you will need about 16-18 groups of probes to work in turn. However, considering the outrageous cost of iridium material sensors and the need for some imports, generally only 4-6 will be installed.

Even so, the price of this humble test equipment is still as high as eight figures in euros, and it is also one of the treasures of the 240 Institutes of the Nuclear Industry.

Under normal circumstances, no matter what the test is, it has to be done by them.

However, the scale of 240 is not large, and it is impossible to pull a turbofan 10 there.

Moreover, because this test involves testing the performance of the aero-engine itself, the requirements are different from usual, and the relevant comrades from the 606 Institute need to be responsible for the operation.

In short, in the end, for the sake of Chang Haonan's signature and endorsement, the other unit took a certain risk and agreed to transfer the electrostatic probe measurement system to the 410 Factory for a period of time.

The condition is that it must be used under the supervision of the technical team including the director, Comrade Han Chenfeng -

That is, the gray-haired old man who was blowing his beard and staring in anger.

"Old Han, Old Han... don't worry."

Liu Yongquan quickly turned around and comforted Han Chenfeng, who was blushing:

"Don't worry, in the test plan we designed, the probe residence time in each round is reduced by 30% based on the parameters you gave us. Your baby will definitely not be worn out..."

The latter opened his mouth, looking like he was hesitating to speak, but in the end he remained silent.

Everyone knew what was going on, so he wasn't really worried that Liu Yongquan and others would wear out the equipment.

There is just a sad feeling similar to "My goddess is now being stood up and kicked by others."

After observing for about ten minutes, Han Chenfeng was basically sure that there was no problem with the other party's operation, so he glanced at Ma Xiaoyu's back with complicated eyes, then shook his head helplessly, and turned to another person not far away wearing a nuclear industry uniform. Young technicians wearing group standard workwear:

"Xiao Lu, don't forget to record the equipment usage log and keep it electronically when you return... In addition, if the comrades of the Aviation Power Group don't understand anything, remember to take the initiative to help solve it."

As the business leader of Factory 240, Han Chenfeng, although he has the name of leader of the supervision team, he certainly cannot always stand in the workshop of Factory 410 as a supervisor.

Therefore, after confirming that the test task is on track, he is ready to turn around and leave.

Of course there is another reason...

Out of sight, out of mind.

Liu Yongquan, who was also relieved about the test, naturally followed suit:

"Old Han, go sit in the lounge upstairs first. After today's test subjects are over, I will arrange for the comrades who came to help to have a meal..."

The person in charge of the brother's unit led a team to help, and he didn't even ask for extra fees. He had to express his gratitude no matter what.

The two of them walked very fast, and in the time it took them to say these words, they had already reached the entrance of the testing workshop.

After opening the door, the surging cold wind and snowflakes made Han Chenfeng pause in his steps.

As a southerner, even though I have been working in Shengjing for more than ten years, it is still not easy to adapt to this kind of weather.

"Have you forgotten anything else?"

Liu Yongquan just thought that the other party suddenly remembered something again.

Han Chenfeng originally just felt a little cold, but when he was asked this question, he nodded and asked the question that he had been thinking about just now:

"Old Liu, in my impression... Academician Chang came out of your 606 institute, right?"

This sudden turn made Liu Yongquan a little unable to react for a while:

"Academician Chang?"

Check out the 16-9 book bar and see the correct version!

"yes."

Han Chenfeng nodded:

"I remember the first time I heard Academician Chang's name was at the first Zhuhai Air Show in 1996. He and Academician Yan Zhongcheng jointly perfected the Kunlun engine that year..."

Kunlun is the code name of Turbojet 14.

Although Mrs. Niu has become less popular now, when she was first publicly unveiled as a full-size model, she received a lot of reports.

Including within the Commission of Science, Technology and Industry for National Defense, there have been several rounds of commendations.

No wonder Han Chenfeng was deeply impressed.

"Actually, strictly speaking, Academician Chang first participated in the 83rd Project on the 601 side and was responsible for the aerodynamic and structural design of the aircraft itself... Later, it happened that the No. 01 demonstrator of the J-8C at that time had an asthma attack on Yan Liang's side. After a vibration failure, I accidentally started to get involved in aviation engine design.”

These things that are already regarded as old almanacs are not considered secrets within the military industry system. Liu Yongquan only regarded them as casual chat and introduced them with a somewhat proud tone.

"So...Academician Chang is still a monk halfway?"

Han Chenfeng suddenly turned his head to look at Liu Yongquan, with obvious shock in his pupils.

"How else can I say that I am awesome..."

Liu Yongquan put his hands behind his back, as if "no one understands Academician Chang better than me."

Of course, in fact, as the earliest deputy who followed Chang Haonan, he did know a lot about things in his early years.

"hiss……"

Han Chenfeng took a deep breath:

"It seems that I have to make a copy of the materials you showed me the day before yesterday, frame them and put them in the office."

The material he spoke of was the plasma generation idea that Chang Haonan had written for Liu Yongquan in the office.

It was precisely because of reading the contents that Han Chenfeng decided to borrow the electrostatic probe measurement system to Factory 410 for use against all objections.

"Why make a copy of that?"

That manuscript only mentioned a concept and didn't even have Chang Haonan's signature, so it didn't matter how many copies he made.

"Ahem..."

Faced with this problem, Han Chenfeng blushed and scratched his head in embarrassment:

"I didn't even make it to the second round of the academician selection last time. Now I'm looking at having to submit materials again in February next year. I'm so happy with Academician Chang..."

"..."

Liu Yongquan shook his head speechlessly. Just as he was about to make a few jokes, he heard Ma Xiaoyu's voice suddenly coming from the testing station behind him:

"Mr. Liu, it is now measured that the thrust of this engine...is greater than before!"