"Dad, you're walking too fast." When Qin Hu went to the airport to see off Qin Feng, he still had reluctance on his face, although he was very surprised to meet this time, but he still didn't expect to be separated so soon.

However, Qin Feng was not at home all year round, and he had long been used to it. Bidding farewell to Qin Feng at the airport, he didn't cry, and his eyes didn't red, this is just the most common difference.

"When flying, use your brain more, and all kinds of plans must be in your mind before taking off." Qin Feng continued to instruct his son: "In particular, it has been changed to a digital telex, I don't know how the flight controller is written, this is a major event related to flight safety." ”

"Understood." Qin Hu didn't know when his father started, and he also became this kind of mother-in-law, and when it came to the problem of flying, he kept instructing him.

Of course he knows that this is Lao Fei's entrustment to Xin Fei, and there is still a heavy love in it.

Qin Feng got on the plane, breathed a sigh of relief, and began to think of Song Lao again, it was so good to hide it, he didn't even tell himself, did Song Lao plan to do it?

When I was engaged in the annihilation of ten, I was a core member, and I have been following since the very beginning of the bidding, but now, I actually don't take myself with me, thinking of this, I feel that Song Lao is doing something unauthentic, and I can't wait to complain to Song Lao.

However, he was even more imaginative, that is, what the new annihilation looked like.

Now, the Americans' F-22 fighter has repeatedly appeared, and the fourth-generation aircraft they have developed since the end of the Cold War is considered a masterpiece across the era, even if it is American technology, it has been engaged in it for many years.

Just look at the data, the project was established in 1971, the first flight was made in 1997, and it was finalized in 2001.

This kind of plane, that's a cross-era!

The F117 is an aircraft that is completely for stealth, sacrificing all other performance, and the F22 is different, and has achieved a good compromise in aerodynamic layout and stealth, with an alternative shape of the whole aircraft, with a diamond-shaped nose, butterfly-shaped wings, flat nozzle engines, and a sideways vertical tail.

Of course, this aircraft shape is not an alternative, the YF23 that competed with the F-22 at the beginning, that is called alternative, just look at the tail, the horizontal tail and vertical tail have been canceled, and the V-shaped vertical tail is directly replaced.

In this way, the control of the rudder surface must be realized through a complex fly-by-wire control program, and even the US Air Force feels that the technology is too difficult, but it has been put into the cold palace.

Besides, its engine, thrust-to-weight ratio of 10, domestic turbofan ten has not yet matured, just installed on the plane, and so on to the end of the test flight, it will take several years, but people have entered the thrust-to-weight ratio of 10 against the sky era.

As for the YF23, it still uses a variable-cycle engine, which is even more powerful, and the gap between itself is too big.

That's right, the gap between oneself is very big, but this is difficult for domestic scientific researchers, in the era of such a huge gap with the world, Song Lao still withstood the pressure and developed the Jian-10 fighter, and the use of new technology in the entire aircraft exceeded 60 percent.

The research and development of the J-10 has put its own aircraft research and development on a benign development track, and with this successful foundation, it will be easier to develop new fighters.

Qin Feng was thinking about the fighter again, he didn't know, after Gu Tingting returned to Shenyang, he knew that he had left, and he couldn't help but stomp his feet, but since he returned to Shenyang, he didn't have to rush back immediately, he was in Shenyang with his family, and he lived for a while first, as for Qin Feng, let him run back and forth by himself.

Qin Feng finally came to Chengdu.

Over the years, the 611 Institute has developed rapidly, at the beginning of the 13th Aviation School, there was a conflict with others because of growing vegetables, and now, the 611 Institute has a new scientific research base, and there is a beautiful bird's nest-shaped research building, when Qin Feng stood in front of the building, he couldn't help but sigh, it looks good, this building, is really full of modern science and technology.

In his mind, the scene of the first time he went to the 611 Institute came to his mind, at that time it was such a small building, most of which was a drawing room, and countless draftsmen stood there to do ruler work, now what?

Inside the building, there is no drawing room anymore, and the research rooms inside are full of rows of computers, and they have long achieved comprehensive paperless operations, which has been the case since the beginning of the research and development of J-10.

After reading Qin Feng's identity certificate, the security guard at the door took Qin Feng and directly entered Song Lao's office, and when Qin Feng walked in, he saw that Song Lao was also carefully analyzing the data on the computer screen.

Those dense data were all made in the wind tunnel, and Qin Feng could know it at a glance.

Song Lao is the best at pneumatic layout, in the early years in Shenyang, it was the pneumatic design room, when studying the Jian-10, he had already been on the configuration of the duck-type layout, blowing through the wind tunnel for more than ten years, and it was to master a large number of first-hand data, so Song Lao was able to lay the final success when developing the J-10.

Now, what aerodynamic layout is Song Lao developing?

"Qin Feng, are you here?" After reading these data, Song Lao's face was filled with joy: "How was the holiday during this time?" ”

"Old man, this is your mistake, there is a new project, why don't you call me?" Everyone is familiar with it, so Qin Feng often calls the old man directly, especially now, Qin Feng still has an unhappy attitude, you have a new project, I don't know, this is hiding from me, thinking that my ability is insufficient, right?

"Isn't this for you to rest for a while, if you know about this new project, then it is estimated that there will be no time to rest, for the sake of Jianten, I have struggled for more than 20 years, and I will rest for a few months, it's always okay, besides, you have done a lot of great things." Song Lao said with a smile, not dissatisfied with Qin Feng's complaints.

You've been doing well in the past few months, and you've flown other people's carrier-based aircraft.

"Then Song Lao, can I participate in this project?" Qin Feng asked.

"Absolutely." Song Lao said: "Our current project is called "Research on the Aerodynamic Layout of a Small Aspect Ratio High Lift Aircraft", come and see this. ”

Song Lao said, took out an issue of the magazine in the bookcase, Qin Feng looked over, it was the "Chinese Engineering Science" magazine sponsored by the Chinese Academy of Engineering, and inside, there was an article written by Song Lao: "Research on the Aerodynamic Layout of a Small Aspect Ratio High Lift Aircraft".

"Now, we first developed the aerodynamic layout, which is the first step of the Long March, the follow-up detailed research and development, it is estimated that I can't catch up, as long as the pneumatics come out, I am satisfied, you are still young, so, the detailed design of the aircraft in the future, is able to participate."