More than two hours later, Jiang Yan and his plane landed at a military base in the southeast.

Jiang Yan looked at the various fighters on the tarmac in the distance, and he was also quite emotional, these fighters, in the 21st century, are called antiques, most of them are displayed in the park, or they are disassembled...... However, in this day and age, it is the main force defending our country's airspace, so he is curious and does not have much interest.

After getting off the plane, Jiang Yan saw Chief Engineer Lu with people, who had been waiting here early, and after Jiang Yan greeted Chief Engineer Lu, he got into Chief Engineer Lu's car.

As soon as he got in the car, Jiang Yan asked Chief Engineer Lu: "Chief Engineer Lu, what is the matter, so anxious to call me over?" ”

"Is there a problem with my retrofit schemes, or is there something wrong with the imitation equipment?"

Seeing that Jiang Yan was a little anxious, Chief Engineer Lu said directly: "Xiao Jiang, it's not your problem, it should be a problem in other aspects." ”

"The modification plan you provided, our prototype has gone through test flights, and no problems have been found. We have also tested the equipment you imitated separately, and there are no problems, which shows that your plan and ideas are quite successful. ”

"The current situation is like this, we assembled the second prototype, and when we were about to do a step-by-step adjustment test flight and a finalized test flight, we found that soon after the second prototype was lifted off, there was a resonance phenomenon."

"Resonance?" Jiang Yan's eyes widened when he heard this.

Once the aircraft resonates in the air, it will cause devastating structural damage in a very short time, and the pilot has little time to deal with it, so flutter is not allowed in the flight envelope of the aircraft.

"Did you find the resonance phenomenon on the first prototype?" Jiang Yan asked after coming back to his senses.

"No, the first plane is completely normal."

Speaking of this, Chief Engineer Lu sighed, and then said: "Although the fifth master was produced and manufactured by us, the first prototype before, in addition to the imitation equipment, about one-third of the parts of the entire aircraft, were all shipped from Mao Xiong, and it was not 100% completely localized. ”

"When we produced the second prototype, we used all the domestic substitutions, and each individual part, before we assembled, also underwent strict testing, and no problems were found."

"But these parts that have no problems, after they are assembled, it has problems......

In fact, if you put this kind of thing in general machines, it is nothing, at most it is a little louder. But if this matter is put on a fighter, it is not a trivial matter. This is not good, but there is a possibility that people will be destroyed at any time!

Anyone who is involved in aircraft design basically understands.

Therefore, the superiors attached great importance to this matter, and mobilized relevant technical experts from all over the country to find out the cause of the resonance of the fighter as soon as possible.

After more than half a month of research, these relevant technical experts did not find out what the problem was.

So......

I can only call Jiang Yan, a magical person, to come over and take a look. Speaking of which, among these experts, Jiang Yan should be regarded as a "non-professional" who has not been formally certified.

After listening to Chief Engineer Lu's narration, Jiang Yan's heart basically has a point spectrum, as long as there is no problem with the overall design parameters, he still has a certain degree of confidence and can solve the problems.

Soon, the car carried Jiang Yan and Chief Engineer Lu to the location of Nanfei.

At this time, in order to keep secrets, Nanfei hung the brand of a certain machinery factory to the outside world, but the internal inspection was relatively strict.

In front of the office building, there are already people standing, and everyone has heard that an expert from Sijiu City is going to come over today, so there are many relevant technicians waiting here.

Most of them are the elites in China's aviation field in this era, and there are many people who have come back from studying abroad, and they have never heard of any aviation experts in Sijiu City, and now they all want to come to see and see.

Originally, they all thought that their technical level was one of the best in this era, but when they saw the transformation plan that Chief Engineer Lu got back, they changed their minds.

And when the equipment imitated by Jiang Yan was transported here from Sijiu City one after another, these technicians were even more shocked!

In particular, those comrades with a relatively high level of secrecy knew a little bit about the transformation plan or the equipment, when they came out of the special design room of a certain research institute in Sijiu City.

They can't help but sigh, our breeder is really Crouching Tiger, Hidden Dragon!

If it weren't for everything that happened, if they all saw it with their own eyes, who would have thought that this kind of somewhat mysterious plot would really happen in front of their eyes!

As soon as Jiang Yan's car entered the factory gate, he saw through the window of the car that there were many people waiting for him in the yard.

When the car drove closer, Jiang Yan found that the leader was Dean Tang, and beside him, there was a middle-aged man about fifty years old.

After seeing Jiang Yan get out of the car, Dean Tang stepped forward, shook Jiang Yan's hand and said, "Comrade Jiang Yan, are you still used to it on the road?"

Jiang Yan said with a smile, "Hello Dean Tang, it's okay on the road, it's just that the transport plane we are riding on is not produced by us, it flies a little slower, and it is not so comfortable to ride." ”

Jiang Yan came to Nanfei this time, taking the Il-14 imported from Mao Xiong in China, the Il-14 is a piston twin-propeller design, with a speed of 412 kilometers per hour, a maximum range of 1785 kilometers, and a crew of 18-24 people.

The Il-14 aircraft focuses on improving the safety and comfort of the aircraft, and has relatively complete de-icing and anti-icing equipment, which effectively prevents ice accumulation on the wings, tail and leading edge of the propeller. The most distinctive design is that its cockpit windshield can be electrically heated without creating frost that affects the pilot's vision. The Il-14 aircraft is also equipped with a heading glide gauge on the instrument panel, which, together with the ground glide meter, can ensure a safe landing in complex weather conditions with clouds up to 30 meters high. In addition, its cabin is well sealed, so it can remain dry and comfortable even when flying in heavy rain.

It is precisely because of these advantages that China has purchased 49 Il-14s since 1955 to undertake special aircraft and domestic passenger and freight missions. However, after the tension between the two countries, our country no longer has a way to obtain this aircraft.

But for Jiang Yan, who was accustomed to sitting on medium and large passenger planes in later generations, he always felt that this plane was a lot worse! So when he heard Dean Tang ask, Jiang Yan didn't want to blurt it out.

Listening to Jiang Yan's words, Dean Tang's eyes lit up, and he said with a smile: "Since Comrade Jiang Yan, you think that the transport plane is not fast and comfortable enough, then you might as well design our country's own transport plane that flies fast and comfortable." ”

As for Dean Tang's words, Jiang Yan could only smile and replied: "Hehe, that will have a chance in the future." ”

(End of chapter)