Early the next morning, Jiang Yan got up early, glanced at Jiang Sirui, who was still sleeping, Jiang Yan got up carefully, washed and dressed, and walked to the canteen with his lunch box.

Breakfast is a big rice porridge, which also puts red dates and kidney beans, and it smells fragrant with pickles and cabbage and radish vermicelli buns, which tastes so good.

There were meat buns for sale this morning, and Jiang Yan didn't even think about buying two meat buns and vegetarian buns respectively and returned to his house.

At this time, Jiang Sirui had already gotten up, and after the two of them had breakfast, they walked to the laboratory together.

Due to the need for other tests yesterday, Mr. Xu, the chief engineer in charge of this fighter, did not pick up Jiang Yan, but came to his office early this morning, and instructed his secretary Xiaohu to inform himself and go to see him after arranging Jiang Yan.

As soon as I came to the research building, I saw Liu Yang waiting there.

"Mr. Jiang, your office has been arranged for you, and I will take you there."

After waving goodbye to Jiang Sirui, Jiang Yan took his secretary Xiao Gong to the office prepared for him.

The office is a suite, with more than 30 square meters on the outside, only a dozen square meters on the inside, and a bedroom and toilet inside.

I heard Liu Yang say that this office was originally used by experts from Mao Xiong Country.

"Knock knock." As soon as he settled down, Jiang Yan heard a knock on the door, and when he heard the knock, Jiang Yan was a little puzzled, he knew only a limited number of people in this Shengjing Aircraft Factory, who came to find him, but he still arranged for his secretary Xiao Gong to open the door of his office.

When he saw the people who came into his office, Jiang Yan was stunned, and then he became excited.

"Mr. Xu, hello, I also said that I would visit you after I sorted it out, but I didn't expect you to come, hurry up, hurry up."

Seeing Mr. Xu sit down, Jiang Yan hurriedly arranged for Xiao Gong to pour water, and then put the water cup in front of Mr. Xu with his own hands.

"Mr. Jiang, you know me." Mr. Xu was a little confused by Jiang Yan's enthusiasm, so he asked Jiang Yan.

Hearing Mr. Xu ask, Jiang Yan didn't know how to talk about it for a while, and said that he knew each other! I do know it.

This Mr. Xu is a legendary figure in his own time, he was later respected as the grandmaster of China's aircraft design, he is a versatile talent, or a patriot and struggler, it was he who led the average 22-year-old designers to design China's first jet trainer under extreme difficulties, and participated in the design of the Zhan 6, Zhan 7 and other models.

Now he is in charge of the Zhan-6 plane, which later equipped more than 5,000 troops, and set a record of shooting down and damaging 23 enemy planes, while his own damage was zero. ”

It is also known as the 'God of War' by our country, as China's first supersonic fighter, the service period is as high as 51 years, and it was not retired until 2010! "Even after retiring, he has been modernized and improved to serve as a death squad to protect the skies of our country.

Otherwise, as soon as Jiang Yan heard that it was the development of the Zhan-6 aircraft, Jiang Yan happily agreed.

"I've heard of your name, Mr. Xu, I've been friends for a long time, and I've been friends for a long time." Jiang Yan replied with a haha.

"I don't know what Mr. Xu is looking for me."

Hearing Jiang Yan's question, Mr. Xu smiled and said, "I'm quite curious about you, so come and take a look, and I'll tell you that the alloy you researched this time has helped me a lot." ”

"Especially the No. 1 and No. 3 alloys, but they gave us a huge surprise."

The state together with the recipes handed in by Jiang Yan sorted out a total of more than a dozen alloy formulas, and due to the need for secrecy, all alloys were named according to the sexagenary branch.

Jiang Yan knows that these two alloys are high-temperature resistant alloys, and the zero temperature cut-off point is about 2000 °C.

During this period, the aircraft of the Fighter 6 was equipped with WP-6 turbojet engines, with a maximum thrust of 25.5 kN (2600 kg) and an afterburner thrust of 31.87 kN (3250 kg).

This engine is an imitation of the PД-9B engine of the Mao Xiongguo MG-19.

The Jet-6 was finalized in July 59 and is China's first supersonic aero engine, which is an axial single-rotor turbojet engine with afterburner. It's powerful and has a lot of room for improvement.

"By the way, also, your improvement on the wing of the Battle 6 aircraft has benefited me a lot, and I have a certain meaning to ask for advice this time,"

"How did you come up with the idea of adding wing knives to the wings of the plane?" Mr. Xu then asked.

As the chief designer of the Zhan-6 aircraft, he is familiar with the advantages and disadvantages of this aircraft, this aircraft, due to the technical level and equipment development ideas and other reasons, this type of aircraft than the previous model equipped by the Mao Xiong country did not use more advanced technology, and the natural shortcomings have also been inherited.

Due to the large wing sweep angle of this aircraft, the wingtip stall problem is more serious. Stalled several times in battle and went into a spiral.

Early all this is unsolvable, our country's designers also thought of a lot of ways, basically did not solve the root cause, until the 70s we thoroughly ate this aircraft, in order to solve the spiral accident, boldly used a pair of large wing knives to solve the wingtip stall problem, I did not expect this effect to be surprisingly good.

However, in terms of effectiveness, the automatic slat is much better than the wing knife. This design is not only influenced by traditional design ideas, but also limited by technical level.

For our country at that time, this design was easy to imitate, but it was not conducive to the development of advanced aviation technology, but all this should be completely changed with the arrival of Jiang Yanfen, because of this wrong route, Jiang Yan could not take them once.

For the question he raised, Jiang Yan had a draft before, and he was afraid of others asking, so he made preparations in advance, and the answer was seamless and convincing.

Under the two of them, two hours passed, and Jiang Yan felt that it was more tiring than his own day's work, in order to answer his question, Jiang Yan's brain had been running at high speed, but fortunately, he stopped asking himself.

Originally, Jiang Yan was still a little dismissive of Mr. Xu, after inquiry, after discussion, Jiang Yan was impressed, originally thought that he was engaged in metal and machinery, but I didn't expect that the plane was studied deeper than himself, especially at the moment is studying the imitation of the 6 aircraft, Mr. Xu feels that this aircraft himself is not as thorough as his research.

If Jiang Yan knew Mr. Xu's thoughts at this time, it was estimated that he would be happy to close his mouth, and other planes would not dare to guarantee that this aircraft would be politely pinched.

In later generations, there are quite a lot of magic changes and research on this aircraft on the Internet, and it is quite amazing to take out one casually, and there is even a big bull on the Internet who directly made a thorough improvement of this aircraft from the fuselage to the shape, and after the improvement, the performance on paper is basically up and down with the later Zhan 7 aircraft.

Jiang Yan also often visited this kind of forum in his previous life, he didn't look at such a design drawing, after the memory of this life was strengthened, all the details could be thought of, and he could really draw himself.

(End of chapter)