Before returning to the college entrance examination, I became popular in the science circle

Chapter 105 Model
"Okay, then let's meet at Telecom!" Li Yisheng nodded, Wu Tong is not a three-year-old child, they are worried about Wu Tong's safety, so they can't follow too closely, lest the child feel unfree and easily rebellious.

The safety of the conference venue is still guaranteed. Wu Tong is not a willful child and will not leave the venue. He is reassured that he will do what he says.

"If you encounter any problems, be sure not to conflict with others and contact us in time!" Li Yisheng repeatedly explained after signing separately. "Our phones are always on."

It is polite to mute the venue, but it does not affect their ringtones to vibrate, which is easy to perceive when held in the hand.In this meeting, their most important task is to take good care of Wu Tong.

"No problem!" Wu Tong made an OK gesture and headed towards her first goal, the report on partial differential equations. The study of fluid mechanics and partial differential equations is a necessary content.

"The existence and uniqueness of the solution, the feasibility of research, and the dependence on the initial conditions, further consideration, linear equations..." The report meeting on dynamic systems and ordinary calculus equations was conducted by Professor Fu from China. .

Wu Tong came to the scene quietly, found an unobtrusive corner, listened quietly and carefully, and made some important records from time to time, or recorded the fragments of sentiments aroused by the collision of thoughts.

She is as good as a mountain in the field, and her accumulation in mathematics can be said to be among the best in the country, but in the dynamics or engine section, she is a pure newcomer.

Most of the information she found on the Internet was general and inaccurate. After returning from Taishan, she found a lot of books and materials on this topic from Beijing University channels and international channels.

After careful study, the theoretical knowledge section, if you can understand it, you can understand it, but the knowledge and foundation are too shallow, she feels that she is still a castle in the sky, and she has not formally started.

Seeing the title of this group at that time, Wu Tong was interested in arranging a time to come and listen.

"···According to dynamics··Transformation model···"

At the end of the report, Wu Tong lightly nodded his head, feeling a little awakened!Why does she have to embarrass herself in the circle of dynamics, turn it into a mathematical problem, and just build a mathematical model?Mathematics is her current base.

What she wants to achieve is not to build a new engine from scratch, but to find an optimization direction and use mathematical models to calculate and deduce better parameters. This is her strong point!

It’s really putting the cart before the horse, getting twice the result with half the effort, and being limited by inherent thinking!
However, the research on dynamics is not in vain, and some basic knowledge is also required to transform the problem. Recently, the research on fluid mechanics and dynamics has been increasing day by day. Her ideas have gradually extended from the engine that she was interested in at the beginning, to what she can see section.

Several parameters jumped into her mind, Wu Tong lowered her head and checked the calculations in a notebook.

Taking the central axis as the level, set the wind resistance as X, the maximum flight speed is Mach 2.5, the length is 18.90 meters, the wingspan is 13.56, the height is 5.08 meters, the fuselage area is 78.04, and the empty weight...

The impact force of the rectangular cross-section is..., medium sweep angle, calculated, the inclination angle of the side of the plane is 35 degrees... synchronous lift-to-drag ratio...
According to some of the parameters she had seen, Wu Tong began to transform the mathematical problem, turning it into a mathematical model for calculation, and transforming it into ideal data.Because it involves sensitive issues, many of Wu Tong's titles directly use references or circle specific symbols. The entire complicated calculation and deduction has become a ciphertext that only Wu Tong can understand.

On the side, there was a Western student who came to study with the teacher. He accidentally saw a corner of Wu Tong's insight notes during the test. He couldn't help but immediately looked away in fear. He couldn't understand. Where did this boss come from? Orientals are bad at mathematics. Is it so powerful?

All the oriental students I met casually were so awesome!What is the state of Wu Tong, who is famous all over the world?Nothing more, this year's one can be called a crushing rise.

After the report was over, Wu Tong closed his notebook and followed the crowd out of the venue, met Li Yisheng at the entrance, and returned to the hotel room.

It was already the afternoon of the second day after the opening ceremony, and Wu Tong got some thoughts in today's last report.

After eating, I informed Teacher Li that she would prepare for the afternoon report meeting at noon tomorrow and sort out the income of the past few days. She would not go out at noon tomorrow, so there was no need to wait for her.

After returning to the room, Wu Tong seemed to have found a child with a new toy, and continued to calculate with great interest, making up for the vacancy in the mathematical model that was initially built in the afternoon.

In the absolute space with only her own, Wu Tong didn't try to hide it any more. Following her calculations, she picked up a ruler and tried to draw a picture. The half-fuzzy shape of the plane gradually took shape under her hands, and the calculated data was taken step by step by her. mark where it should be.

The Raptor F-22, an extremely advanced fighter jet of today, officially became operational in 2007. How many countries used to guard against its sudden appearance beyond visual range day and night, reduce dimensionality strikes, and overbearingly occupy the air supremacy advantage.It is also the existence of many scientific research workers in China who work hard day and night to catch up with and surpass.

Wu Tong's impressions and data about it still came from inadvertent browsing in future memories. Before, it had been quietly gathering dust in her memory. At today's report meeting, she was suddenly touched and inadvertently extended the association, awakening this memory. .

Based on what she has learned recently, from the perspective of fluid mechanics and aerodynamics, she converted some data from her memory into a mathematical model, coupled with the cooperation of absolute direction and absolute deduction ability, and began to reversely restore the shape data .

Some of the data may not match the exact data she lacked in the original version, but this is the optimal data calculated by Wu Tong based on the mathematical model transformed from various angles of mechanics and dynamics.If it does not match the original data, Wu Tong is confident that her data is the best choice, and the real model did not do it, perhaps because the material and process conditions are not up to the optimal data.

She actually didn't realize what she was doing at the moment. The definition she gave herself was just a matter of doing some verification inference calculations at the right time.

On August 8.23rd, at one o'clock in the afternoon, a drawing of a fighter jet with a complete shape was born in Wu Tong's pen.

The ridge-shaped precursor, the sharp side wings, the fuselage, the wings, the binary vector nozzle... The layout of the fuselage appears on the plan view, and the detailed data is densely marked on it with the guidance of arrows.

In addition to the rough shape of the fighter jet, Wu Tong also further calculated the thrust-to-weight ratio of the engine... and from the perspective of materials science, he calculated and analyzed the maximum pressure, density, and mass of the fuselage material. Under the limited weight of the fuselage, currently Which materials are closest?The data in hand was limited, so Wu Tong could only try his best to make vague deductions.

Titanium alloy?
(End of this chapter)