Although Shen Yiyi gave himself a step down like this, as an expert of the older generation, Xiao Yizhan still had his own self-esteem. His knowledge and position will not allow him to go against it. Moreover, in the eyes of the older generation of scholars, right is right, wrong is wrong, and there is no reason to be stubborn and refuse to admit it.

Therefore, Xiao Yizhan still said very generously: "Hehe, classmate Shen Yiyi, in fact, I really thought that you might have forgotten the benefits of this wing shape just now. It was also my negligence, I didn't think that no matter how good the design is, in the end, I have to put it in the actual use environment to examine its performance. It was a low-level mistake, and my old man made a mistake this time. ”

Luo Yu looked at his grandfather, and his heart was a little mixed. He has always admired his grandfather, and has always thought that his grandfather, as a big bull in the aviation industry, must be the one who solves problems that others can't solve. He never imagined that one day he would hear from his grandfather that he would make a mistake.

And Shen Yiyi was deeply moved to see that Xiao Yizhan, as an old-timer, could admit his mistakes very calmly in front of a junior like her. Although Chinese culture has been emphasizing "seeking truth from facts" since ancient times, as a materialist, it is more important to "seek truth from facts". Now, Old Man Xiao has set an example for her that is very worthy of respect and emulation.

Of course, as a good student who knows how to be polite, Shen Yiyi still tried to ease Xiao Yizhan's cheeks. The old man is honest and respectful, but as a junior, there should be a behavior of respecting the old and loving the young, which is the minimum upbringing.

"No, Elder Xiao. I think it's because you've been designing airplanes for a long time. And the skeleton of the plane is good. Even skin, in modern times, hard materials such as metal have been used. This time, we designed a paramotor made of soft materials. Since the properties of these two materials are so different, you will rarely come into contact with an umbrella aircraft. Therefore, it is inevitable to be overlooked for a while. Shen Yiyi tried his best to find a reason to comfort the old expert in front of him. Because she knows that the older generation of scholars has a particularly strong sense of responsibility, and they tend to overly criticize themselves for a small mistake of their own. But Shen Yiyi didn't want these old experts to be like this, because after all, the old people were not young, and they were worried about hurting their bodies.

It's just that Xiao Yizhan still insisted that he did make a mistake that he shouldn't have made. He turned his head to his grandson and said, "Xiaoyu, you have to learn more from Shen Yiyi." You see, people are about your age, and they have far more knowledge of aviation than you. And they also have the ability to lead a research independently. Shen Yiyi did not explain before. Can you imagine all the aspects that went into designing a paramotor? Even your grandfather and I made a mistake just now, but Shen Yiyi thought very comprehensively, which is very rare. ”

Looking at Luo Yushen nodded approvingly, Shen Yiyi himself was a little embarrassed. If she hadn't been more mature than others in soul for more than ten years, and she had experienced a lot more things than others, if she had real skills, she thought that she would be far behind the young boys and girls who surrounded her after crossing into this world. The wisdom of these boys and girls sometimes makes her feel amazing. These people are the real geniuses. Her own so-called ability. In her opinion, it's like cheating, and there's nothing to be proud of when she wins others.

So after Shen Yiyi listened to the old man's praise, he still said very modestly: "I'm ashamed, I'm ashamed." I really don't dare to take such a compliment from the old-timers. Maybe because I'm a girl, I'm a little more delicate about things. Luo Yu's calculations are much stronger than mine. If only I did. That's a lot to calculate in such a short time. It's hard not to make mistakes. However, Luo Yu was able to complete these calculations very accurately, which is very remarkable. ”

Luo Yu listened to Shen Yiyi's praise. The heart is very useful. Although he was embarrassed to show it in front of his grandfather, he couldn't help but straighten his chest and become as proud as a general.

Xiao Yizhan looked at his grandson, then at Shen Yiyi, and sighed with a little disappointment in his heart. After getting to know Shen Yiyi's outstanding talents, especially after Shen Yiyi showed her excellent sense of aircraft design and solid knowledge foundation in front of him, Mr. Xiao Yizhan deeply believed that Shen Yiyi was a rare genius in aircraft design in the Republic. He couldn't help but have a strong love for her, and was already thinking about how to let his old classmates and friends in Beijing find time to come to Shenyang once, or find a way to let Shen Yiyi go to Beijing in person. Such a talent can't be buried no matter what, it's best to recruit into the aircraft major of Beihang University, and find a way to let her enter the relevant topics in advance. He believes that with Shen Yiyi's feelings about aircraft, he will definitely be able to bring fresh ideas to the entire research group, and may even bring help to the research of the entire subject. To know Lu Dao, based on the formulas that Shen Yiyi figured out by himself and let himself get a few hard-to-buy formulas, it can already be expected that it will greatly promote the work of the research group.

Of course, it turned out that Old Man Xiao also had a little bit of an idea that he didn't want to be known. This girl is not only smart, but also polite in dealing with people, and she is actually very beautiful, she is a little beauty. His grandson also looks very similar to him when he was young, and he can be called a sunny boy. If this little girl and her little grandson can be made together in the future, then our Xiao family's achievements in China's aviation industry in the future will not be unrivaled? Therefore, at first, he had the idea of abducting Shen Yiyi home to be his grandson's daughter-in-law. If Shen Yiyi could guess the old man's thoughts, if it was a little bit 2B, he would definitely look up to the sky and laugh "Ha Lu Ha Ha ————————", and then secretly said in his heart and said "Old man, you think too much" to reject this idea. Just kidding, although the sunny boy is also very delicious, ah no, it's cute, but her current vision Shen Yiyi has long been fed by all kinds of beautiful men in her previous life, and the sunshine boy can't meet her requirements.

However, just after Shen Yiyi praised Luo Yu just now, Old Man Xiao had already given up his previous idea, because he found that his grandson's Taoism was not enough to see in front of Shen Yiyi. The old man is the opinion of the elders, thinking that this daughter-in-law has to rely on her husband's mouth to deceive. In other words, it doesn't matter if this daughter-in-law is smart, but emotionally she still has to eat her grandson's mouth, and she must be able to be coaxed to be happy. But he found that it was the opposite, Shen Yiyi just said a word, and his grandson had already been coaxed to the point that he couldn't find the north, and he was proud there, this girl was terrible. If he really became his granddaughter-in-law, then his grandson would not be eaten to death in the future. No, no, for the sake of the happiness of my grandson, I can't be sluggish. So although Shen Yiyi, a girl, is indeed good in all aspects such as knowledge, she still has this thought, and forget about her granddaughter-in-law.

Old man Xiao Yizhan put aside all other ideas and looked back at Shen Yiyi: "Shen Yiyi, now that you have selected these two airfoil plans, what work are you going to carry out?" Also, since it is called paramotor, how are you going to solve this power problem? ”

Shen Yiyi thought in his heart, he deserves to be a titan in the aviation industry, and the level of grasping key issues is high. Therefore, as a junior, Shen Yiyi still said respectfully: "These two airfoil schemes will be converted into curve equations in proportion, and then use numerical methods to check whether the strength meets the requirements, and whether there will be a strong detachment of eddy currents to cause instability." ”

Old Man Xiao interjected all of a sudden, and said with interest: "Oh, numerical methods? What numerical approach did you decide to use? It's not going to be your formula. Also, how are you going to do the numerical calculations? Do you have a solution to the computer problem? ”

Shen Yiyi shook his head honestly: "In the fluid part, the internationally accepted numerical method is the boundary element method. In the structural strength part, the finite element method co-invented by Mr. Feng Kang, a mathematician in China, is the natural choice. Old Man Xiao nodded secretly, this girl is right.

"Also, of course, we can't have the conditions for calculation now, so we can only use the method of hand calculation, and there is no way to calculate it by machine. However, I designed a special slide rule to reduce some of the pressure of calculations to some extent. ”

When Old Man Xiao heard this, he became interested: "What slide rule, let me see." ”

Shen Yiyi smiled embarrassedly: "That one is now at the classmates' place, and they are getting familiar with the use process." This slide rule has long been driven to an unknown corner by computers in later generations, but in the era when there were no electronic computers, it was still infinitely beautiful. Each specialized discipline has its own specialized slide rule tool to help with calculations. If Shen Yiyi hadn't been to the university tutor's school history exhibition room once before and occasionally found such a thing, and had the idea of seeing the principle of the slide rule on a whim, she would never have thought of such a way to help calculate in this life. Fortunately, she understood the principle of making a slide rule, thought of a calculation formula, and then asked Lin Xue and the three of them to calculate and fill in the blanks at home for a few days to make this slide rule, so once it is made, it will play a big role.

When Old Man Xiao heard that he was not at her house, he was not reluctant, but only said that he must let him see the ruler in the future, and Shen Yiyi naturally agreed. (To be continued......)

PS: Thank you wjb_705040 and Tang Nini for the reward, as well as the pink ticket for smalltien. I love your descriptions of some of the techniques in the text, although I try my best to ensure the correctness of the techniques, but the novel, it is originally fictional, so occasionally there are some descriptions that may not be very correct, and please understand.