Wu Tong immediately stood up and respectfully confirmed the master-disciple relationship.
"Congratulations to Master Cheng for having a good disciple, and congratulations to Wu Tong for meeting a famous teacher!" Lu Xiao and Zheng Hongming smiled and applauded.
Cheng Huanan and Cheng Lao are among the top experts in the domestic materials circle. Wu Tong is already extremely talented, and by studying with such a famous teacher, he will be unmatched in the future!
Zheng Hongming jokingly said, "Master Cheng, today is the day to reveal everything!"
Anyone who has a talented student like Wu Tong would celebrate with joy!
"I'm really unworthy of this. If Wu Tong is willing, I will guide you with the materials!" Old Cheng's face was no longer serious as usual. At this moment, he could really be said to be smiling.
Having such a good disciple, I have no regrets in this life. His face, which rarely smiles, forced a big happy smile at this moment. It looked a little funny at first, but who cares!
"I'd like you two to bear witness to my arrival as I finally welcome my last disciple!"
He had said before that his closed disciples inherited everything from him. He had dedicated his entire life to the country. He only had this knowledge and was concerned about what he had passed on. He hoped that his students would surpass him.
He treats every entry-level student seriously, but he can basically see the upper limit of these students. As a teacher, who doesn't want to meet a top student?
Now that I have Wu Tong as my student, I have no regrets at all.
No longer feeling that he was getting older, he was eager to get started and had already started thinking about the learning process he would arrange for Wu Tong.
He knew Wu Tong was a fast learner. Seeing how far she had come at such a young age, it was clear what he had said was true. Therefore, ordinary instruction was definitely not suitable for her. Special arrangements needed to be made. He would have to make a detailed plan for Wu Tong's studies, adjusting it based on her progress and needs.
"Mr. Cheng, I'd like to borrow Wu Tong from you first. I have some questions about the F-22 mathematical model that I need to discuss with Wu Tong!" Lu Xiao and Cheng Huanan reported.
Wu Tongxian now has a legitimate teacher, but he is not comparable to this honorary teacher who is only reluctantly connected and has no connection with him in the slightest.
"Ask, ask. You guys just talk here. I'll go take a look at the repeated data in the lab and ask Cheng Xu to sort it out and import it over later!" Cheng Huanan waved his hand, stood up and walked out to make some quiet space. Some of the questions were probably confidential, so he consciously avoided them.
Zheng Hongming followed in Mr. Cheng's footsteps, "I'll go see how everyone else's confidentiality agreements are going!"
"Teacher Lu, what are the specific issues? Let's discuss it together!"
After signing the various confidentiality agreements, Wu Tong also learned about this person's current responsibilities and was genuinely surprised. The J-20, the aircraft that would later excite and inspire so much pride among Chinese people, was actually developed under the leadership of this teacher. Truly impressive!
The rise of the J-20 means that China now has a fourth-generation fighter jet that meets international standards, has the power to regain China's air superiority, and has the confidence to have a stronger voice in the international arena.
She deeply admired the researchers who drove the nation's progress. They were the ones who quietly safeguarded China's peace. Their willingness to remain anonymous, to remain silent, and to dedicate themselves passionately made possible the prosperity of China she remembered.
"Just call me Lu Xiao. This nominal teacher makes me ashamed!" Lu Xiao opened the laptop he carried with him, exported the model he derived last night, and turned the laptop towards Wu Tong.
"Here, the aerodynamic uncertainty at high angles of attack is analyzed using a slender template. The aerodynamic and flow characteristics of an aircraft at transonic speeds and high angles of attack have three key points: the asymmetric detached vortex forebody at angles of attack above 30 degrees, the lateral aerodynamic forces that create a normal force, and the randomness of the forebody... I want to... find a special compensation mechanism based on the logic of mathematics and dynamics. The greater the angle of attack, the worse the randomness of the phenomenon!"
The problem of flow around at high angles of attack has always been a major problem that has plagued fighter jets, and it can also be said to be a cutting-edge topic today.
He initially considered balancing this probability through some form of exterior design. Asymmetric front wings or flat front wing layouts were among the options he considered. However, most of these designs failed to achieve the desired value. It wasn't until Wu Tong's deductive logic emerged that he saw a new solution.
Previously, domestic aviation companies either avoided this problem by not flying at high angles of attack, or compromised stability by widening the wing surface. However, this, in turn, would cause a series of problems. Any change in a fighter aircraft is always a major event that affects the entire system.
Wu Tong stared at the data on the screen and thought quietly. After a while, she had some ideas. She pulled over the draft paper and pen and started to deduce on the draft paper.
dujdt=ρgj+??xiTij, Tij=?pδij+τij=?pδij+2μ(Sij?23
Smmδij)+μνSmmδij(3)(3)ρdujdt=ρgj+??xiTij
, Tij=?pδij+τij=?pδij+...····
After a while, Wu Tong pushed the full draft paper in his hand in front of Lu Xiao.
"The motion of conservation of momentum of viscous incompressible fluid, the NS equations?" Lu Xiao understood Wu Tong's principle at the first glance. He studied dynamics and engaged in fighter jet design, so how could he be unfamiliar with fluid mechanics?
Wu Tong nodded. "Yes, my logic is to start with the NS equations. Let P be the air fluid density, V be the velocity vector, and U, V, and W be the velocity components of the fluid at time T at point Z... We assume... that by directional inference... in the solution of the NS equations, we can obtain the optimal auxiliary wing length and width..."
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