The design of the J-7 is not easy, and it has come a long way.

At the earliest, this aircraft was an alternative to the H-5, after repeated research, Shenyang's H-8 program, Nanchang's Qiang-6 program, were eliminated, only Xi'an's H-7 program, was selected, it was selected because of the reliability of its program, especially, the most important thing is that it decided to use Spey engine.

At that time, the introduction of Spey engine was a key project of the country, but after the introduction, there was no supporting aircraft, so that the introduction of dozens of engines was idle, and the design of the H-7 used two Spey engines, which were the most mature in terms of power.

In terms of engines, the H-8 uses two turbojet-7 engines, which are exactly the same as the J-8 engines, and the Qiang-6 decided to use the turbofan six, both of which cannot meet the requirements, one is backward, and the other is far from being developed.

There is a qualified engine, which is absolutely good, which can greatly improve the research and development process of the fighter, but unfortunately, the Spey engine cannot be used on the J-10.

Spey engine is a second-generation engine, thrust-to-weight ratio is only about 5, is unable to meet the use of third-generation fighters, the most important thing is that its thrust is not enough, J-10 in the design, it needs a thrust of 12 tons of engine, Spey engine, even if it is an improvement project planned by Rolls-Royce, the thrust can not reach ten tons, and, on the other hand, this engine due to design problems, is very difficult in high altitude and high speed, once the speed is high, the height is increased, its thrust will decline rapidly, The British installed them on the ghost fighters and became special Spey ghosts, and they appeared to be weak at high altitudes.

Now, Qin Feng's mind was thinking more and more, and Gu Tingting ignored him, and after squinting on the bed for a while, it was time to get up.

The new year has arrived.

In any place, it is popular to pay New Year's greetings, but the number of New Year's greetings has changed a lot, the oldest time, the New Year's greetings are definitely very formal, it is to kneel down and kowtow, but now, the New Year's greetings in the village have also kept pace with the times, learn what to look like on TV, raise your hands with both hands, and say some blessings, especially a daughter-in-law like Gu Tingting, will definitely not kneel in this way, Qin Laohan will also be strong, of course, for everyone, What I am most looking forward to is the New Year's greeting of the little tiger head, and the red envelope has already been prepared.

This year, because he had his children go home, Qin Laohan was very happy, and after the New Year, the day of separation came again.

Li Zhiqiang has taught everyone how to make antennas, and has also designed two models, one is very large, so that the signal received is the best, but the price is more expensive, one is small in size, and even directly on the roof, and the effect is better than before, of course, the most important thing is cheap, as for how they imitate and sell, this is not under Li Zhiqiang's control, they should go together.

Qin Laohan drove the car and sent them to the train station, and the old lady's eyes had already turned obviously red, obviously, the old lady was also reluctant to have children, but what about it, when the young eagles grow up, they all want to fly to the sky, they can't stay in the ravine for a lifetime, they all have to go out.

Qin Laohan sent everyone to the platform, and when the train started, Qin Feng saw the back of his father walking away, he was already a little hunchbacked, and he felt a little sad in his heart, and inexplicably thought of the back written by Zhu Ziqing.

I saw him wearing a black cloth hat, a black cloth coat, and a dark blue cotton robe, staggering to the side of the railway, and slowly leaning down, it was not too difficult. But it was not easy for him to cross the railroad and climb up to the platform over there. He climbed on it with his hands and retracted his feet again; His fat body leaned slightly to the left, showing the appearance of hard work. Then I saw his back, and my tears quickly flowed.

When I was in school, I didn't feel anything when I read this text, but now, when I touch the scene, I always feel like I feel familiar, of course, this is also a little different, although they are all send-offs, but Zhu Ziqing's father is the trough in his life, and his father, although he is old, has begun to glow the second spring of life, he wants to lead the villagers to get rich together and live a good life!

Qin Feng can't forget his father, it's impossible to forget it in this life, Xiaohutou is already asleep at this time, he has been crazy in his hometown these days.

The people on the train are very crowded, when they come back, there is no such luck, only bought a hard seat, but, looking at the train full of people, there is a special flavor, this is a special feeling of the journey, here, to be able to experience the world, to experience the development of society, a few years ago, in the carriage of the train, there is still a piece of green, now, it is already green, and there are people wearing red coats, with the joy of the New Year.

When they arrived in the capital, they said goodbye to Qin Xue and Li Zhiqiang, Qin Feng and Gu Tingting went to the test flight institute together, and after living in the test flight institute for a few days, Qin Feng returned to Chengdu.

As soon as he entered the 132 factory, he met Song Lao, which made Qin Feng stunned for a moment: "Song Lao, why are you here, is our Jian-10 about to start production?" ”

What else can Song Lao do when he comes here? Is it going to be put into production? Build a prototype and hurry up to test fly, Qin Feng can't wait.

Hearing Qin Feng's words, Song Lao shook his head helplessly: "No, I came to find Lao Tu to discuss the improvement of our J-7III." ”

Now, the J-7III has just begun production, but when it was designed, it was still in accordance with the previous design, and in the past few years, the progress of the domestic avionics system and so on has also been very fast, so the J-7III needs to be improved in order not to be outdated when it is produced.

It's not J Shi's turn yet, in fact, Song Lao also hopes that J Shi can come out immediately, but these things are in a hurry.

"Let's go, let's go together, this time the central government commended the Jian-7M project, and also gave a bonus, Tu Lao is rewarded for meritorious deeds, you must also have a share." Song Lao said.

Qin Feng has watched the news broadcast, but it will not reveal too much news, and this commendation will definitely be rewarded.

Regarding money, Qin Feng didn't have too much to worry about, he didn't spend much money, and he didn't use too much money, this money was given to Song Lao and them for research, but he refused to ask for it, etc., why don't you send it back to Daddy and give them as capital?