Chapter 1357

"Two streams ~ ~ ~ change cycle ~ ~"

This argument originated in Japan, and the reason why China cited the second argument in this comparison is that the popular science introduction of variable cycle aero-engine first came from Japan.

There's no way. Japan in the 1980s and 1990s can be said to be a technological power next only to the United States on the planet. Not to mention the annual Nobel Prize winner, let's say that Sony's ultra-thin Walkman, Panasonic's rear projection color TV, Sanyo's roller washing machine... Any one of them is full of a sense of technology.

Even at that time, Japanese animation mostly spread to the world with the full sense of science and technology such as space warships, future fighters and alien mecha. Even the Martial Arts Animation described in "Dragon Ball" added Burma, who has strong scientific and technological innovation.

More than ten years later, it's far from the way that a certain person will endure and a certain pirate will be. Although he is enthusiastic, he is completely conservative as a whole, which can be compared with animation.

In such an atmosphere, Japanese society's enthusiasm and pursuit of science and technology far exceeds that of other places, especially the tracking of advanced technology in the United States, which can be called timely and effective.

The main reason for this is that there is a consensus in Japan, that is, although it was held on the ground by powerful Americans in the Second World War, the hardworking, hardworking and disciplined Japanese in an invisible battlefield like economy and technology are not necessarily inferior to the American father.

It may even surpass in one fell swoop. By that time, it is not certain who will be called "father" in Japan and the United States.

Because of this, Japan almost focuses on the scientific and technological circles of the United States. It is more concerned about every move of the United States in the field of technology than its own daughter-in-law. If the Americans want to make a technological achievement, the Japanese are ready to make a better one.

For example, the ge21 variable cycle aeroengine developed by general dynamics is rarely known in the United States, but the Japanese who got the news immediately popularized the technology, even though it was approved by the Aviation Technology Committee of the government, vowing to develop Japan's variable cycle engine.

At that time, it was only in the early 1980s. Even the Soviet Union on the other side of the world was ignorant of variable cycle engines. Japan was ready to take advantage of the trend of variable cycle to overtake in the field of aeroengines.

It has to be said that the vision of Japanese science and technology circles at that time was still very strong.

To know that the reason why variable cycle aero-engine is called variable cycle lies in the word "variable". In short, by changing the bypass ratio, the aircraft can have the performance far superior to that of traditional aero-engine in different states.

For example, longer range and faster speed.

Because of this, variable cycle aero-engine is known as the first choice of the next generation, or even the next generation of combat aircraft, and has become the potential stock to subvert the existing aero-engine technology path.

If Japan can go along this technical route, even if it can't make a variable cycle aero-engine, it can still make a big step in the field of aero-engine. After all, the Japanese are not short of technology and talents. Mitsubishi Heavy's heavy-duty gas turbine and general dynamics have a long way to go in the global competition. As long as Japan is willing to work hard, it still has a bright future.

However, in 1985, a piece of Plaza Agreement made Japan drift away completely, and the yen rose sharply. Finally, the Japanese who had a hard currency seemed to be the sun monkey who had been repressed for a long time, and immediately opened the buying mode. What industry, what manufacturing industry, how could they make money by speculating in land, houses, stocks and bonds?

As a result, no one is trying to make a variable cycle aero-engine. It's better to make a piece of land in the outskirts of Tokyo for the next life.

In fact, Japan can still be saved at this time. You should know that the Federal Republic of Germany was forced by the United States to appreciate its currency at that time. However, the Federal Republic of Germany did not drift because of the currency appreciation at that time. Instead, it used its own currency as an anchor to continuously penetrate into Southeast Europe and used its powerful manufacturing industry to pry new market territories one after another, In the end, not only was it not hindered by the appreciation of the currency, but it became the impetus for Germany to rise again, which laid a solid foundation for the reunification of the two countries in a few years.

In contrast, in Japan, after several years of revelry, the bubble was punctured instantly and entered the lost ten years. The prevailing social atmosphere was no longer replaced by a depressing twinge.

In such an atmosphere, let alone continue to change the cycle of the aero-engine, the most common propeller engine, the Japanese do not have the energy to put in, so the whole plan is so dead.

The Americans, however, continued to develop their own variable cycle aero-engine during this period. In particular, general motors developed the ge23 turbofan engine on the basis of ge21. This ge23 is nothing else. It is the yf-120 high thrust military turbofan engine that was later equipped on a generation of Yuji yf-23 fighter.

It is also the second practical variable cycle aeroengine in the world.

As for the first practical variable cycle aeroengine, it is naturally the j-58 variable cycle turboramjet produced by Pratt Whitney, which is used in the famous "blackbird" high altitude strategic reconnaissance aircraft in the United States.

By controlling the air flow, the engine can convert freely between the turbojet and the ramjet, thus achieving unimaginable high altitude and high speed.

Because of this, the j-58 variable cycle turboramjet engine, let alone in the 1960s and 1970s, is also a proper black technology at present.

As for GM's yf-120 high thrust military turbofan engine, not to mention that it benefits from the two modes of turbofan and afterburner full turbojet during cruise, thus giving the yf-23 fighter a range of more than 4500km and an excellent cruise capability of more than 30 minutes at Mach 1.45 without afterburner.

To be honest, at that time, many military leaders and aviation industry insiders in China envied these things from Japanese popular science materials, and they wanted to try them out. But at that time, even the third generation of high thrust aircraft engines were not available in China, let alone yf-120, the fourth generation or even the fifth generation of advanced aircraft engines.

It's just that we don't follow these advanced aviation technologies blindly. With the disclosure of the existence of yf-23 and YF-22 by the Americans after the cold war, domestic technology tracking has shifted from Japan to the United States. It's just that Japan's science popularization of secondary school is too popular, especially the "double channel ~ ~ ~ variable cycle ~ ~ ~" is not only easy to remember, but also catchy, So it was used by many people.

It's obvious that the commander who made the exclamation was one of the successors. But at the moment, the commander who knew a lot about aeroengines didn't have enough time to tangle with these Chinese and second languages from Japan. He glanced at the wd-64vip turbofan engine in front of him, and then looked up at Zhuang Jianye, "Is the range of VTOL verification aircraft equipped with wd-64vip turbofan engine significantly improved? Can the maximum lifting limit reach 20000 meters? Can supersonic cruise be realized without afterburner?... "

Zhuang Jianye nodded without hesitation: "don't worry, we can all do it!"