Rising: Ten Thousand Years Chapter 456: : dream

Is there any problem?

Everyone held the back of their heads and carefully looked at the Peng-type aircraft, their faces full of bewilderment.

Some people feel that there is something wrong, but they can't say it. It can only be attributed to lack of spirituality.

Seeing that they couldn't find the problem, Li Zhen simply said: "There is a problem with the model. The area of ​​the wings is too large."

Everyone opened their mouths, hesitant to speak.

Team leader Liu Hongyun smiled dryly: "Mr. Li, this is an improved model. The shape we designed before was overturned later."

Li Zhen asked: "Why was it overthrown?"

"Because we feel that long-distance flight stability is the first priority. However, the previous wing coverage area is too small and the load-bearing capacity is insufficient, so it is not suitable for long-distance flights."

Li Zhen laughed loudly: "Who told you that the bearing capacity is not enough? Do you know that the wings are too big to be unstable."

"Why?"

"Because there are too many accidents. If the wings are too big, the speed will slow down. You gave up the speed to increase the stability. But in fact, in the high altitude, the speed is the first. As long as the speed is provided , the lift will continue to increase. And when the wings are bigger, the speed will slow down and the thrust will slow down. This is a thrust aircraft, and everything depends on the engine. When the thrust decreases, the lift will decrease. On the contrary, it will increase the load bearing .”

Xun Jiayuan frowned and said: "That's not the reason. You see, the wings have become bigger, and it can glide and land smoothly even if the air engine is turned off."

Li Zhen smiled and said: "The size of the previous wing, even if it is a little smaller. After the engine is turned off, it can still glide and land. Don't forget, you are a biplane. Enlarging the volume of the wings will inevitably increase the weight , if the wings become heavier, the loss is the lift instead.”

Everyone was speechless. If you think about it carefully, it seems to make sense.

Liu Hongyun asked again: "Then Master Li thinks that we need to reduce the size of the wings?"

"That's right. This size must be reduced. There is another crucial point, your aircraft model is wrong. This model is not streamlined, but like a big cylinder, flying into the sky like a fat Head goose. Stupid and stupid."

"But there are people sitting inside."

"No matter how many people are seated in you, you can't sacrifice streamlined shape. Streamlined shape is very important. A few more processes, don't let the aircraft model become such a stupid shape, it can be streamlined without changing the volume."

Xun Jiayuan was astonished: "If you don't sacrifice the size, how can you change it?"

Li Zhen gestured: "Look, let this place have more edges and corners, and let some parts of the cylindrical fuselage be recessed. The recessed range does not need to be very large, and it will not affect the passengers at all. Is it streamlined? You don’t need to change the skeleton, the skeleton is facing, just change the shape of the fuselage, and it will be streamlined easily.”

Xun Jiayuan slapped his thigh: "That's right. I always feel that it has no spirituality, but I can't tell why it is so. It is because I sacrificed the streamlined body unknowingly."

Li Zhen also said: "Also, the wings also need to be changed. The shape of your wings is like a ruler. It looks like a machete. This actually increases the wind resistance. The wings can also be changed to streamlined. .”

"How to streamline the wings?"

"Your current wings are like a machete, cutting straight forward, and the angle between the wing and the fuselage is also 90 degrees vertical, which is not good. Adjust the angle of attack of the wings, and the wings The root and fuselage of the root and fuselage, the front is at an obtuse angle, and the rear is at an acute angle. In this way, it becomes a dagger, which stabs obliquely and cuts forward. The efficiency of cutting horizontally forward with a machete is better, or the efficiency of cutting obliquely forward with a dagger What do you think?"

After Li Zhen finished speaking, everyone in the design team was excited.

,

"That's right. The wings don't have to be in such a straight shape."

"Our wings are a regular rectangle. But this is wrong."

"The wings can be in the shape of a triangle. The closer to the fuselage, the wider it gets, and the narrower it gets at the wing tip. Isn't this streamlined?"

"I'm sure, if this is changed, the speed of the aircraft can be increased by more than 15% under the same power."

"Fifteen percent is less. I estimate twenty percent."

"Finally solved the case. I said that I felt that this model was wrong, but I couldn't figure out what was wrong. So that's what happened."

“…”

Looking at the excited appearance of the design team, Li Zhenxin knew it in his heart.

It's no wonder they didn't think of this, these things have been learned before, and they can be figured out with a turn of their heads.

They are delusional. I was designing every day, and I got into a dead end without knowing it. But once it is brought up at this time, it will immediately wake up.

As long as you tell them what is wrong, they will be able to see what the problem is and how to improve it.

Liu Jinghong also said that it made sense. During this period of time, he also felt that the design and development had encountered a bottleneck, and he had no idea about Peng Shi. I am even more afraid of delaying the business. But today the problem is finally solved ~IndoMTL.com~ is worth celebrating.

Xun Jiayuan took a peek at Li Zhen, truly admiring him.

Hey, why is this young man so talented? He is proficient in all fields, and basically no one can do it. This was the No. 1 Scholar in Kyushu under his own rule, and his glory was already famous all over the world. At that time, who would have thought that the first champion was not the end of his career, but the beginning of his glory.

Amazing.

After Li Zhen finished his question, he found Xun Jiayuan again, and said with a smile, "Is Mr. Xun comfortable in Kyushu Academy of Sciences?"

Xun Jiayuan glanced at Li Zhen suspiciously, a little embarrassed: "Hehe, what's the matter? I like this place, the scientific atmosphere is very strong, and I also like to do my current job."

Li Zhen said: "I was too busy before, and I haven't heard about your recent situation. I still look forward to Haihan. If you have any needs and requests, just let me know."

"What are you talking about. I am very satisfied here. I don't have any requirements. The only requirement is that I can stay here forever, even if I am an ordinary research and development personnel. Just work."

"Mr. Xun is going to be seventy this year, isn't he?"

"Seventy-three."

"It's time to retire at this age, you are still on the front line, are you tired?"

Xun Jiayuan blew his beard and stared: "What's so tiring? You must not let me retire. If I really have time to relax, I will go crazy every day. My life is very satisfying now. I am very satisfied. Money, rights and beautiful women It’s all floating clouds. It’s not easy for a person to find something he really likes in his life, but it’s even more rare to be able to immerse himself in his hobby all his life.”

When Li Zhen heard the words, he didn't know what he thought of, and said with a vague look in his eyes: "Yes."

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