Chapter 111 Intake Distortion Test
This time, what Chang Haonan did quietly was definitely a big job, and its impact was naturally not as simple as making Yan Zhongcheng choke.
It is one thing to design an individual test, but another thing to come up with a set of universal and unified regulations that apply to the entire industry.
"Make up?"
After finally catching his breath, Yan Zhongcheng gave up his plan to drink water and opened the "Aeroengine Inlet Distortion Test and Evaluation Method" in front of him. 》.
He had to see how many things Chang Haonan added.
"Classification of stability reduction factors..."
"Evaluation specifications for aerodynamic stability..."
"Numerical calculation methods in the process of aerodynamic stability analysis... ”
“The influence of experimental factors on distortion characteristics...”
"Comprehensive assessment of aerodynamic stability in the engineering design stage..."
"..."
"Hiss——"
Of course it is impossible for a document of more than a hundred pages to be I read them all in a short time, but just a glance at the catalog was enough to make Yan Zhongcheng pinch his teeth in shock.
No matter what the content looks like, just looking at the logic of the writing is absolutely clear.
Since the ARP1420 and AIR1419 standards that were introduced (copied) were fundamentally not suitable for China’s aviation industry system that was born out of the Soviet Union and France, a lot of the content in it was very blunt and confusing, like a book Mathematics textbooks that are poorly translated and lack content are equally frustrating.
The evaluation method written by Chang Haonan not only contains a lot of highly instructive practical content, but also corrects or redefines many inappropriate parts of the original standards.
"Xiao Chang."
Yan Zhongcheng finally took a sip of water safely, and then slowly said:
"This thing you wrote , I can’t do anything on my own, and I’m not qualified enough to give an evaluation, so I have to report it.”
He is very clear that many of the specific contents in this method involve a lot of professional knowledge outside the field of overall aero-engine design, and it is not enough to do it alone.
And more importantly, it is a national military standard.
Even if it is not complete yet, it is a serious national standard. Once the content is written in, it will guide all engineering practices in related fields.
In other words, if new models of aero engines or gas turbines are to be tested for air intake distortion in the future, they must be conducted within this framework, and even involve a series of work such as subsequent type certification.
At any time, the formulation of national standards related to any industry is followed by countless exchanges of interests and bloodshed.
Although China's aviation industry is completely under the unified leadership of the state and there will be no exaggerated plots of physical business wars, this weight is definitely not something that Yan Zhongcheng, as the chief model engineer, can handle.
So no matter from the technical level or the management level, it requires an entire expert group and the endorsement of the Commission of Science, Technology and Industry for National Defense.
“I know this.”
Chang Haonan, who was sitting opposite Yan Zhongcheng, took out a bulging file bag from his bag. After opening it, there was a stack of files that had not been bound yet. Document paper:
“I have also prepared relevant documentation and data from the engineering design process, but if we want this method to be truly convincing, it still has to be on our turbojet 14 Just do it once.”
"Of course, the intake distortion test of the turbojet 14 engine will still proceed as planned."
Yan Zhongcheng picked up the pen in his hand and tapped the table habitually:
"But according to According to the general process, there will be a standard review soon after I submit the report. In order to ensure that the progress of both parties is not delayed, the on-site conductor of the test still needs to be replaced by another person. "
He still has to prioritize things. Can tell the difference.
Based on the performance of the turbojet 14 in the past period, it can basically guarantee that the test process goes smoothly, and there are not many things that need to be handled on site.
Therefore, what Chang Haonan needs to do more personally is to prepare for the standard review. "If it were another person..."
Chang Haonan also knew that he had no skills to do both, and the efficiency of taking care of both sides would be even lower, so he glanced at Yao Mengna, who was sitting next to him and had been silent. , after thinking for a while, he gave his answer:
"Let my senior sister do it. She also participated in the design of relevant experiments and the determination of standards during this period. Apart from me and you, "
Putting Yan Zhongcheng next to himself is definitely not a compliment.
In fact, in the original timeline, before GJB/Z64-94 truly formed its guidance capabilities, the only person in China who had relatively systematically designed the forced asthma test was Yan Zhongcheng.
It’s just that the water-spraying method he used was not as stable as the plug-in method later introduced from Russia, so it failed to become a standard in the end.
"Little Yao..."
When he heard Yao Mengna's name, Yan Zhongcheng's first reaction was that she was a bit too young.
But immediately he realized that Chang Haonan in front of him was actually younger.
The younger generation is terrible——
Yan Zhongcheng sighed secretly in his heart, and nodded at the same time, agreeing with the candidate proposed by Chang Haonan:
“That’s fine, let her come, it can be considered as a exercise. . ”
The two of them made arrangements for Yao Mengna clearly.
“Huh?”
The latter was originally just appreciating the temperament Chang Haonan inadvertently showed when communicating with Yan Zhongcheng, but he never expected that it would suddenly affect him.
"Wait, why is it me..."
The first thing Yao Mengna felt when she learned of this decision was panic——
I am a third-year Ph.D. student who is helping my junior brother. Why are the first-year students suddenly assigned to be on-site conductors?
After all, such an arrangement not only means recognition for her, but also means bearing huge pressure and responsibility.
It is completely different from simply doing technical research.
"Xiao Yao, don't refuse this matter."
Yan Zhongcheng turned around and looked at Yao Mengna, who was still confused:
"䱱We are all the future pillars of China Aviation. We must be good at and dare to take responsibility. This experiment is not difficult and risky. Just think of it as a practice for you.”
The corner of Yao Mengna’s mouth twitched slightly, her heart was trembling. There is no point in giving a doctoral student a chance to practice under a key project of the Science and Technology Commission, but Yan Zhongcheng has already reached this point, and she can no longer refuse, so she can only nod and agree.
"Promise to complete the task!"
Although it was not out of her own will, with her serious character, since she has accepted the task, she will definitely try her best to complete it to the best of her ability.
So Yao Mengna looked at Yan Zhongcheng opposite, and then at Chang Haonan beside her.
The latter's eyes seemed to be full of encouragement.
This stabilized her mood a lot.
"Then...I'll go back and prepare now."
"Don't be too stressed. You can go to the control room to simulate the test process tonight. If you have any questions, you can come and ask. Me or Xiao Chang."
Yan Zhongcheng, who could see the nervousness in the female doctor in front of him, continued to half-joke in a relaxed tone:
"Otherwise, after the review expert team arrives in two days. , we may not have that much time.”
(End of this chapter)