Open an aircraft carrier to fight against Japan

The conversation between the two people is in Chinese, so the word "Wave Rider" is very strange to Ilya. There is a big difference between Chinese and other languages, that is, every word that makes up Chinese vocabulary has meaning. Like other languages, a single syllable is meaningless, so when Chinese describes a new thing, it does not need to create a single word, just combine the existing words.

It was this characteristic that made Ilya unable to understand "Wave Rider". There are many homophones in Chinese, how could Ilya know which three Chinese characters formed this word? Ilya was born in science, which made him instinctively He is sensitive to new technologies, which is also an important reason why the Tsar sent him to negotiate with Lin Yuan.

Ilya vaguely knew that he had touched a profound secret, which might change the future destiny of Russia. His heart was beating wildly, but he didn't show it at all, and asked with a smile, "Commander Lin, may I ask you?" What does this waverider mean?"

Lin Yuan said with a smile: "When the speed of an object is very fast, a kind of wave is produced, we call it a shock wave. The nature of this wave is very peculiar, and the pressure of the air behind the wave will be greatly increased. So that wave pushes our plane forward."

Here, Lin Yuan mentioned the concept of a waverider, which is also a structure applied to supersonic aircraft, but the shock wave cannot push the waverider forward. The shock wave only provides the lift required by the aircraft. The power to move forward also depends on the engine of the aircraft itself.

Lin Yuan is not at all worried that they will be able to develop a supersonic aircraft after they know the shock wave and waverider, because the most basic thing to study aerodynamics is simulation calculation. You must know that the ns equation has no analytical solution. The numerical simulation method can be used to calculate the flow field. If these calculations are calculated by humans, they can be regarded as dead. Only supercomputers can be used, but there are no calculators in this era.

Ilya had never heard of such a theory, and he frowned and asked, "Is what you said true?"

Lin Yuan smiled and said nothing, thinking: "Go and study, and see what you can come up with."

Seeing that Lin Yuan didn't speak, Ilya knew that the conversation should be over. He put on the mask and instantly turned into a typical Chinese, and then said: "Shuai Lin, I'm leaving first. Master Li and I are in Zhangzhou. Yizhan, let’s talk about the follow-up matters.”

Lin Yuan pointed at the door with a smile, and Ilya walked out contentedly, thinking that he had taken advantage of it. Looking at Ilya's leaving back, Lin Yuan turned on the communicator and got in touch with the Beijing ship.

The Beijing ship has undertaken many test tasks in this high-sea voyage, one of which is the sea-based hypersonic vehicle verification research. This research is mainly a tracking study. The tracking target is the US x4; my country's latest scramjet engine.

There are many aspects to the design of the aircraft, one of which is the design of aerodynamic performance. When the speed of the gas reaches high times the speed of sound, many of its characteristics are very different from those at the low-speed stage, almost completely different. Therefore, the design of this project The chief scientist is Zhou Huaxin, an expert in gas dynamics, academician of the Chinese Academy of Sciences, and chief scientist of a certain gas dynamics research institute.

Because Lin Yuan has no intention of building airplanes, Zhou Huaxin is very leisurely. It’s not that Lin Yuan doesn’t want to build airplanes, but that he needs to build engines first. Gas turbines are too far away, and piston engines are not yet mature. The only thing that can be used is Steam engine, but the steam engine is too bulky, it is impossible to use it as power equipment on the aircraft.

Lin Yuan found Zhou Huaxin and said with a smile, "Old Zhou, how's your blood pressure?"

Zhou Huaxin smiled and said, "It's okay, I take a piece of antihypertensive medicine every morning, and it can't go up. Why did you think of greeting me, an old man today?"

Lin Yuan smiled and said, "Aren't I cramming for the time being? Greetings, I'm afraid you won't agree when I beg you later?"

Zhou Huaxin laughed twice, and said, "When did I never agree to what you asked me to do! Tell me what you want."

Lin Yuan asked, "Do you know anything about gas dynamics?"

Zhou Huaxin has been studying it all his life, so Lin Yuan asked the question knowingly, and wanted to elicit the following words, but Zhou Huaxin said: "The more I read, the less I dare to say I understand it. I have studied it all my life, but I am just scratching the surface , there are many young people who don't understand..."

Lin Yuan knows that Mr. Zhou likes philosophy, and often connects scientific research with philosophy. He always likes to tell people that those who engage in scientific research must understand some philosophy, but now is obviously not the time to listen to lectures. Lin Yuan quickly said: "No, no. No, that's not what I meant, do you know the history of gas dynamics?"

Zhou Huaxin said: "Know a thing or two, many people who engage in science don't like to study history, I think this is wrong..."

Lin Yuan thought to himself: "Fortunately, Mr. Zhou's speaking speed is relatively slow, and the interval between two sentences is relatively long, so it doesn't seem rude to interrupt him." Lin Yuan then interrupted him again, saying: " Mr. Zhou, can you divert their research to a different path based on the level of aerodynamics in 1895, focusing on hypersonic vehicles."

Zhou Huaxin asked, "What did you say?"

Lin Yuan explained: "I want to use this method to delay the technological development of other countries. I know this job is difficult, and the top scientists of this era are not easy to deceive. If they make a mistake, they can see it at a glance. I don't have the ability to do that, so I have to come to you."

Zhou Huaxin laughed "haha" and said, "Don't worry, take care of me."

Lin Yuan said again: "Mr. Zhou, I have already promised the Russians that I will give them the waverider aircraft. Look, how can we make a fuss about it?"

Zhou Huaxin thought for a while and said, "The materials of the high-speed aircraft are all high-temperature-resistant materials. Let's not expose this thing. Let's send them a model."

Two days later, the Beijing ship sent the materials carefully prepared by Zhou Huaxin to Lin Yuan. Lin Yuan briefly looked through the materials. When the sonic airflow decelerates, it will generate shock waves, and when it accelerates, it will generate expansion waves. In this document, Zhou Huaxin deliberately ignored this fact, and only described the nature of the shock waves.

Zhou Huaxin did not make any major changes to the waverider model, because it is really unnecessary. The technical difficulty of hypersonic vehicles is far from the aerodynamic shape, and the greater difficulty lies in control technology and propulsion technology.

After a while, Ilya came and said: "I guarantee that while you are fighting the Japanese, we Russia will not promise to form an alliance with the Japanese and maintain a military presence at the junction of Jilin and Shengjing, and then Shock the Japanese."

Lin Yuan handed over a heavy box of technical documents to Ilya, took out the model, and said, "The prototype is too big, we can't ship it here, first give you the model, and after you withdraw your troops, we will give you the model." Prototype."

Ilya took the box, smiled easily, stretched out his hand and said, "I hope we can become friends in the future."

Lin Yuan pointed to the box and asked, "Why don't you open it and have a look?"

Elijah shook his head helplessly, and said, "I want to see it too, but I can't."