This statement originated from Japan. The main reason why this relatively unconventional statement is cited in China is that the popular science introduction to variable cycle aero engines first came from Japan.
There is no way. In the 1980s and 1990s, Japan could be said to be the largest technological power on the planet after the United States. Not to mention the annual Nobel Prize winners, let¡¯s talk about Sony¡¯s ultra-thin Walkman and Panasonic¡¯s rear-projection color TV. , Sanyo's drum washing machine Take out any one and it's full of technology.
Even Japanese anime at that time were mostly based on technological themes such as space battleships, future warriors, and alien mechas. Even "Dragon Ball", which describes martial arts, included powerful figures like Bulma. Bai Fumei with scientific and technological innovation.
Far from being like a certain pirate who endured it more than ten years later, the anime is comparable to a certain pirate who is passionate but overall completely conservative.
In such an atmosphere, Japanese society¡¯s enthusiasm and pursuit of science and technology far exceed that of other places, especially the tracking of American advanced technology, which can be said to be timely and effective.
The reason for this is mainly because there is a consensus in Japan, that is, although they were pinned to the ground by the powerful Americans in World War II and had a lot of friction, they were hard-working, able to endure hardships and fight in invisible battlefields such as economy and technology. Disciplined Japanese are not necessarily any worse than American dads.
It may even be surpassed in one fell swoop. By then, it is not certain who will call whom the father of Japan or the United States.
Because of this, Japan has almost fixed its sights on the U.S. technology sector, and is more concerned about every move the U.S. makes in the field of technology than its own daughter-in-law. It wishes that the Americans would make a technological achievement, and the Japanese would be ready to imitate it. Come up with a better one.
For example, the GE21 variable-cycle aeroengine developed by General Dynamics is little known in the United States, but the Japanese who learned the news immediately popularized the technology. It is a neutral item of the Aeronautical Technical Committee and vows to develop Japan's variable cycle engine.
At that time, it was only the early 1980s. Even the Soviet Union on the other side of the world was ignorant of variable-cycle engines. Japan was preparing to use the variable-cycle trend to overtake in the field of aerospace engines.
I have to say that the Japanese technology community at that time was still very visionary.
You must know that the reason why a variable cycle aero engine is called a variable cycle lies in the word "change". Simply put, it is through the change of the bypass ratio, so that the aircraft has capabilities far beyond those equipped with traditional aero engines in different states. performance.
??For example, longer range and faster speed.
Because of this, variable-cycle aero engines are called the first choice for the next generation, or even the next generation of combat aircraft, and have become a potential stock that subverts the existing aero engine technology path.
If Japan can continue along this technical route, even if it cannot make a variable-cycle aero engine, it can still reach a big level in the field of aero engines. After all, the Japanese do not lack technology and talents. Mitsubishi Heavy Industries¡¯ heavy-duty gas turbines Just as General Dynamics is competing in global competition, there is still a lot to be done as long as Japan is willing to work hard.
However, the Plaza Accord in 1985 completely devastated Japan. The yen appreciated sharply. The Japanese, who finally had hard currency, seemed to be the monkey monkey who had been suppressed for a long time and instantly started buying and selling. What kind of industry, what kind of manufacturing, etc. Are you making money from land speculation, house speculation, stock speculation, or bond trading?
So no one is bothering to work on a variable-cycle aero-engine. The hard and tiring work is not as cost-effective as buying a piece of land on the outskirts of Tokyo and having no worries about food and clothing for the next life.
In fact, Japan could still be saved at this time. You must 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 at that time did not float because of the currency appreciation. Instead, it used its own currency as an anchor and continued to move toward Southeastern Europe. Penetrating and leveraging its strong manufacturing industry to open up new market territories one after another, it spared no effort to upgrade its industry. In the end, instead of being dragged down by currency appreciation, it became a driving force for Germany's re-emergence, laying the groundwork for the two German states a few years later. Unification laid a solid foundation.
On the other hand, in Japan, after several years of carnival, the bubble was instantly burst, and it immediately entered the lost decade. The original vibrant social atmosphere was no longer replaced by a decadent twilight atmosphere.
In such an atmosphere, let alone continue to change cycle aero engines, the Japanese did not have the energy to invest in the most common propeller engines, so the whole plan came to nothing.
The Americans, however, continued to develop their own variable-cycle aero engines during this period, especially General Motors, which developed the ge23 turbofan engine based on the ge21. This ge23 was none other than the one that was later equipped to the first generation YF-120 on the Enchantress YF-23 fighter jetHigh thrust military turbofan engine.
It is also the world¡¯s second practical variable-cycle aero engine.
As for the first practical variable-cycle aeroengine, it was naturally the J-58 variable-cycle turbine ramjet produced by Pratt & Whitney and used on the famous "Blackbird" high-altitude strategic reconnaissance aircraft in the United States.
This engine can freely switch between turbojet and ramjet engines by controlling the airflow, thereby achieving unimaginable high altitude and high speed.
Because of this, the J-58 variable cycle turboramjet engine is considered a black technology even today, let alone in the 1960s and 1970s.
Not to mention General Motors' YF-120 high-thrust military turbofan engine. Thanks to the two modes of turbofan during cruise and afterburning full turbojet, the YF-23 fighter has a range of more than 4,500 kilometers and It has the excellent ability to cruise at Mach 1.45 for more than 30 minutes without using afterburner.
To be honest, at that time, many domestic military leaders and people in the aviation industry drooled with envy after seeing these things from Japanese popular science materials, and wanted to try them out. However, at that time, the country did not even have the third-generation high-thrust aerospace engine. Not to mention the yf-120, a fourth-generation or even fifth-generation benchmark advanced aerospace engine.
But not blindly launching research and development does not mean not tracking these advanced aviation technologies. As the Americans disclosed the existence of yf-23 and yf-22 after the Cold War, domestic technology tracking also shifted from Japan to the United States. However, Japan's secondary science popularization is too advanced, especially "Double Path Flow~~~Change Cycle~~~" is not only easy to remember, but also catchy, so it has been used by many people.
Obviously the chief who exclaimed was one of the successors, but at this moment, the head of the army who knew a lot about aero engines had no time to dwell on these secondary languages ????originating from Japan, and glanced at the wd-64vip in front of him. Turbofan engine, then raised his head and looked at Zhuang Jianye, asking in rapid succession: "Is the range of the vertical takeoff and landing demonstrator equipped with wd-64vip turbofan engine significantly improved? Can the maximum ceiling reach 20,000 meters? No. Can supersonic cruise be achieved with afterburner?"
Zhuang Jianye nodded without hesitation when he heard this: "Don't worry, we can do it!"
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