"The 1968 U.S. Air Force and Navy Air Supremacy Fighter Program called for a significant increase in the engine thrust-to-weight ratio and improved intake tract and engine matching, and at the same time, the U.S. Department of Defense made the decision to use the same core aircraft to develop two engines. In April 1968, the U.S. Air Force and Navy jointly proposed an initial 18-month engineering development plan, requiring Pratt & Whitney and General Electric to each build and test a demonstrator with an engine core that could meet the requirements of both the Air Force and the Navy. ”

Foreign and domestic research is different, domestic research on a new aircraft, that is extremely secret, such as J-8, the degree of secrecy is quite high, although in the eyes of foreign countries it looks like a rag, but the country is still regarded as a treasure.

In foreign countries, at the beginning of the development, it was open competition, and the bidding of the two major companies was boiling, and the winning company had to publicize it to show the strength of its own company, drive the company's stock up, and so on.

Therefore, Qin Feng knows everything about the development of the third-generation engine in the United States.

Of course, the United States also has many hidden projects, such as the F-117, which has been developed for more than ten years, and the outside world does not know, the most secret is the Manhattan Project during World War II.

Pratt & Whitney made a bid for the development of two engines for the air and navy, based on the JTF22 core engine, which was developed on the basis of the JTF16 demonstrator, which was first put into operation in July 1969. Pratt & Whitney won the GE1/10 engine competition with General Electric in March 1970, and the Air Force signed a $275 million "cost plus incentive" contract with Pratt & Whitney in April 1970. ”

What Qin Feng said, many people present didn't know, and everyone listened to it with relish.

Qin Feng continued: "This contract is very interesting, stipulating that if the cost exceeds or falls below the contract, the excess or lower part will be shared by the air force and the company in a 90:10 ratio. Subsequently, however, the actual cost exceeded the planned cost by a significant amount, and the contract value was increased by $122 million in July 1971. For engines used for flight tests and production, the method of "fixed price plus incentive" is adopted, and the ratio between the air force and the company is 75:25. The F100 engine was developed at a cost of 475 million yuan, and the planned cost for component improvement was about 666 million yuan. In other words, the overall cost of this engine in the end is about 1.1 billion US dollars. ”

These are all public information, the Americans did not hide it, Qin Feng said it now, it is also clear, he is also drooling with envy for the three generations of American engines, and at the same time, of course, he remembers the research process very clearly.

They did not have ten years of catastrophe, they were not disturbed, and even so, it was studied for more than ten years, and if the original verification machine was followed, it would be almost twenty years, even if it was such a long time, it could not be said that it was perfected, and now it is still plagued by the immaturity of the engine.

How can the level of our own country be compared with that of the United States? There is no input, there is no industrial base, and now everyone encounters these difficulties, and it is normal.

You can't be discouraged, keep pushing forward, and finally you can mature.

What Qin Feng envies the most is, of course, the research methods of others.

"This engine in the United States is several years ahead of the development of fighters, so as to ensure the matching of fighters, and the research of other engines is independent of the model, which is the biggest difference from us."

Qin Feng didn't point fingers, he was just talking about things, and now that he said this, Wang Yang didn't feel anything wrong.

The country is indeed like this, the country wants to build the J-9, and the turbofan-6 that was put into development belongs to the first fighter and then the engine, which is not in line with scientific laws.

When the plane is dismounted, the engine follows the R&D mode of dismounting, which can easily lead to the result of breaking a stick and throwing one by one.

If you look at it from later generations, not only turbofan-6, but also other projects, turbofan-5, is for the H-5, turbofan-8, is for the Yun-10, after the aircraft project was launched, these engine projects were discontinued.

Hearing Qin Feng's words, Mr. Zhang couldn't help but sigh: "Yes, if our country can invest funds, first spend a lot of effort to build a core machine, and then, we will carry out supporting research and development on the basis of the core machine, so that we can avoid a lot of detours, but it's a pity." ”

The core engine is the core part of the turbofan engine, which is studied level by level, piece by piece, and all of them are thoroughly eaten, and after they are thoroughly eaten, the core engine is there, and a small duct is set outside, that is, the fighter engine, and a large duct, which is the engine of the passenger aircraft and bomber, and the output mechanism is improved, which is the gas turbine, which is the most suitable process.

It's a pity that this was impossible in the past, and now, the country wants to focus on economic construction, and this kind of research and development is even more impossible.

If you want to rely on state investment, it is difficult to follow the Western company model? Take advantage of market competition? The initial investment is huge, and without the support of the state, where can I find so much investment?

When he said this, everyone felt silence, and the peanut beans also felt the same taste as chewing wax.

Everyone was silently thinking about their thoughts.

"Although we have many difficulties, I firmly believe that our future is bright." Qin Feng said: "A strong country is inseparable from a strong national defense, a strong air force, and a strong aviation industry, we may have to be patient now, but I believe that when our economy improves, the country will definitely develop vigorously in our fields." ”

"Yes, yes." Mr. Zhang also cheered up: "Let's toast to the strength of the country!" ”

Everyone didn't drink, they raised the cups for drinking hot water, and they collided together, and the words "serving the people" on the milky white enamel cups collided with each other.

When I left the 410 factory, it was already the second half of the night, and the winter in Shenyang was cold, but Qin Feng's heart was hot.

Seeing the projects being disembarked one by one, and the projects moving forward with difficulty, Qin Feng had a lot of emotion in his heart, he believed that the difficulties were only temporary, and the country needed a strong national defense, a strong aviation industry, and a great aviation!

"Our Shenyang side is an old base area, even if the state's allocation is small, and the air force is in short supply, it will definitely give priority to us." Wang Yang said: "Especially the new J-1 project, just like the J-8 J-9, when only one can be supported, the country must support us to get the J-8 out first, and the current J-13 is also." ”

Wang Yang began to continue to persuade Qin Feng: "The advanced fighters in the future have to depend on our 601 Institute, for the sake of our J-13, you can stay, okay?" ”

Qin Feng shook his head seriously: "No, if the idea of fighter research and development does not change, it will only go further and further on the wrong road, and I still have to go back to Chengdu." ”

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