Siheyuan starts from a better life

Chapter 908, Guidance

"No way, brother, you're talking nonsense. Believe it or not, I'll tell your sister." Jiang Yixi hit Jiang Zihan.

"Brother, my sister and I made a model of an airplane. Why don't you show it to us?" Jiang Yichen walked forward and spoke to Jiang Zihan.

"Okay!" Jiang Zihan agreed immediately and followed them.

Jiang Yichen and Jiang Yixi walked with Jiang Zihan on either side, chatting and laughing as they walked. The classmates in their department felt as if they were facing a great enemy, their faces changed drastically, and they looked at Jiang Zihan with hostility.

It's no wonder. There are few girls studying science, and even fewer studying aviation. Since Jiang Yichen and Jiang Yixi came to the Aviation Department, they have become the beauties of the entire department, absolute goddesses. Anyone who comes to find them will be targeted by the entire Aviation Department. Inadvertently, the boys in their department also blocked a lot of people for them.

When Jiang Yichen saw the unfriendly looks from the male classmates in her department, the smart girl immediately understood what was going on and began to explain.

"This is my older brother, my dear brother, Jiang Zihan!"

Then a classmate murmured: "Jiang Zihan, Jiang Zihan, why does it sound so familiar?"

"Oh, so you are the weirdo from the first class at Wudaokou next door!"

Jiang Zihan was very famous in the university circle. When he was studying in Wudaokou next door, he always hung out in the library. The teacher always closed his eyes during class! Occasionally, he opened his eyes, and the teacher knew that he had said something wrong.

Rumor has it that his level is higher than that of his teachers. He never puts down his books all day long and basically doesn't communicate with others. However, in his sophomore year, he was admitted to a government-sponsored study abroad program and was directly admitted to the world's number one university, which caused a sensation in the entire university.

"Brother, this is the aviation model that my sister and I made together." Jiang Yichen pointed at a model of an airplane and said.

Jiang Zihan took a look at the airplane model and immediately saw the advantages of the model. It was obvious that the model designed by Jiang Yichen and Jiang Yixi had a strong bear style and adopted the head air intake. However, it was much more beautiful and slender, and it looked very attentive.

"Brother, what do you think? If we use my model to develop an aircraft, what level will it be internationally?" Jiang Yixi said.

Hearing his sister's question, Jiang Zihan thought for a moment and then spoke.

"There are currently two universally recognized standards for classifying fighter jets in the world: one is the Russian "fifth-generation aircraft classification method" and the other is the Eagle Sauce's "fourth-generation aircraft classification method." However, the entire Western world is now using the Eagle Sauce classification method."

"The characteristics of the first generation aircraft are: transonic speed, all-metal fuselage, swept wings, single wing, equipped with turbojet engines, and the main onboard weapons are machine guns, cannons, and air-to-air rockets. Later onboard equipment is equipped with simple radars. The main representative models are: MiG-15, F-100, MiG-19 and other aircraft. This generation of aircraft emphasizes high speed and is designed to gain air superiority."

"The characteristics of the second-generation aircraft are: twice the speed of sound, thin wings with small aspect ratio, turbojet engines with afterburners, second-generation air-to-air missiles instead of air-to-air rockets and first-generation air-to-air missiles, and fire control systems equipped with transistor radars on board. The main representative models are: F-4, MiG-21, Mirage III. This generation of aircraft still emphasizes high altitude and high speed like the previous generation." "Starting from the third-generation aircraft, the main research of fighter aircraft is no longer limited to speed, and more maneuverability is incorporated. More emphasis is placed on low-altitude penetration, and also on attacks beyond the field of vision, that is, using airborne radars and air-to-air missiles to attack at long distances, and you will be shot down before you even see the enemy. Therefore, airborne radars and fire control systems are the top priority."

After Jiang Zihan finished speaking, he glanced at the people who were listening and continued speaking.

"I believe everyone knows that there are three air intake methods for fighter jets in the world, namely nose intake, belly intake and wing intake. The air intake is located at the head of the fuselage or engine nacelle, and the flow field in front of the air intake is not disturbed. Its advantage is its simple structure. The biggest disadvantage of the front air intake at the head of the fuselage is that it is not convenient to place the radar antenna at the head of the fuselage, and the air intake pipe is too long.'

"If nose air intake is the best choice for first- and second-generation aircraft, then on third-generation aircraft, this will magnify its advantages, so I feel that nose air intake is not suitable for third-generation aircraft."

"Senior Jiang, what kind of air intake method do you think is suitable for our country's aircraft?" a classmate said.

"Yes, senior, since the third-generation aircraft is not suitable for nose air intake, then what is suitable for us?" Another classmate spoke up.

"Where the air intake of an aircraft's jet engine is located is determined by the aircraft's design requirements. There is basically no unified standard, and the current mainstream in the world is belly air intake."

When Jiang Zihan came here and saw these students, he saw the vitality. He felt very fulfilled and saw the growth of the next generation of the country. The talents in our country at that time were very capable of doing things. They had real skills and could do something by themselves. It's just that they were too exposed to too few opportunities.

Originally, Jiang Zihan didn't want to talk anymore after saying this, but seeing the eager eyes of his classmates, he started talking again at their request. At this time, Jiang Zihan mainly answered his classmates' questions.

At the beginning, there were not many people around Jiang Zihan. As a result, many classmates called their friends and formed a semicircle on the playground. Jiang Zihan stood under a tree, and another classmate took a few blackboards and chalks.

While he was explaining, he also drew out the corresponding formulas and algorithms. Not only that, he was very direct in answering the questions raised by the students. Not only did he solve the problems, he also put forward his own opinions and pointed them in the direction.

What's even more outrageous is that some teachers also sat on the floor in the back and raised problems they encountered in the experiment. Jiang Zihan answered them one by one and also talked about his own ideas and opinions. These teachers were also absorbing new knowledge that he had never received.

Jiang Yichen and Jiang Yixi looked at their brother with admiration. They knew their brother was very good and a genius, but they didn't know how good he was. After seeing the attitude of the students when their brother was teaching and the old man who sat down carefully in the back for fear of disturbing his brother's lecture, they knew how good their brother was.

The lecture lasted until three in the afternoon, and then the students were given half an hour to ask questions. Jiang Zihan, Jiang Yichen and Jiang Yixi left with the students' reluctant gazes.

After a long time, there were still students and teachers asking about Jiang Zihan. They found Jiang Yichen and Jiang Yixi, but at that time, Jiang Zihan had already started working in the research institute and the confidentiality level was very high, so the two of them didn't know either.

The one who regretted the most was naturally the president of the Aviation University. He had heard about Jiang Zihan's lectures and had seen the notes taken by the students. They were also amazing. Many of them directly pointed out the direction for the advancement of the aviation field. After the president came to inquire about it, he beat his chest in anguish. A 23-year-old doctor who had studied abroad at MIT was not a big Buddha that his school could accommodate, but he could be hired as a professor! It would be good for him to come and teach students when he was free! Later, those blackboards were well preserved in the library, and the notes of those students were sorted out and written into the textbooks.

(End of this chapter)