"Tingting, take a break." Qin Feng handed her a glass of water behind Gu Tingting, this wife of his own, really has the strength to fight.

Anyway, after coming here, someone watched Xiaohutou, Gu Tingting didn't go back for three days, she studied these programs in front of the computer, her focused appearance was very attractive, even Qin Feng was stupid, but after all, people are not iron, their wives are like this, what should I do if I am tired.

After giving the pilots another lesson, Qin Feng came over, looked at his wife's busy appearance, and brought her a glass of water.

"Thank you." Gu Tingting said, her hand was holding the cup, but her eyes were not looking at the water cup, while drinking, she was still looking at the screen, and suddenly, her voice rose a few decibels: "Found it, here!" ”

Got it? So quickly, to find the cause of the failure?

Gu Tingting is very serious, although everyone is looking for it together, and they have to have a meeting every day, but other people are here to help, even if they can't find the fault, it won't affect them, but Gu Tingting is different, because Qin Feng is going to fly, if there is still a fault, it will definitely not work.

Gu Tingting has always been very serious, and she looks forward to finding and solving the problem as soon as possible.

Got it?

Hearing Gu Tingting's words, everyone gathered around her and looked at the flickering computer screen in front of her.

"This flight control program, there are serious fatal logical flaws in the control software, the lack of angle of attack and overload feedback links in the pitch attitude control process, this part, at least 20,000 lines of program code, all kinds of problems are considered clearly, written in, but here, they have nothing!"

Why did I have a problem when I landed? It's because of the lack of control procedures for this part. There is no way to feedback at all, and after the vibration of the ground contact causes the aircraft to increase the elevation angle, there is no way to continue to control it, and finally a tragedy is formed, and if you add this part of the code to it, it can be perfectly suppressed.

Gu Tingting had already noticed this problem when she was writing the program of the BW-1 stabilizer and wrote a full 20,000 lines of code, but now, there is nothing here!

But why are they lacking this part of the code? Their testing machine at the time didn't make this mistake. The technician of the 601 Institute on the side said that the cause of the failure was found, but why there was such a serious defect, and the prototype of MBB was fine, which was very strange.

"I guess at that time, they used analog telex, and now these programs, they didn't install them on the plane at all, and what they gave us was an unverified code."

After all, at that time, they were only the GCV model that was tested on the basis of the F104G developed in the sixties.

Messerschmidt-Berko-Blom, the merger of the MBB company, later acquired the Junkers manufacturers that produced the Junkers 52 and Stuka. It seems that although it is a long-established aviation enterprise, the Germans do not have too mature and successful experience in terms of three generations of fly-by-wire flight control, and their flight control system is also quite low.

Electronic technology is constantly developing, it is very likely that they designed this verification machine, the early stage only uses analog telex, from analog to digital, is a leap, only digital telex, is the real telex system that can be controlled at will, when they develop digital telex, it is just the law of analog telex to convert, look at a lot of redundancy in these codes can be imagined, this should be the result of machine compilation.

In particular, at that time, this part may have been realized with analog circuits, but it was abandoned when it was converted to digital circuits, and as a result, such a nondescript program was formed now, which was put on the J-8 ACT, which led to the first flight of this aircraft, which fell off.

When Gu Tingting analyzed this, everyone present understood, yes, it must be like this, the last time I visited Europe, only the Germans offered the lowest price, so I bought it from them, I thought they were old European aviation companies, where do you know, they are also fooling!

This also laid the groundwork for future development, and two years later, when the 601 Institute decided to cooperate with the J-8 IIACT technology, it no longer chose Germany, and went directly to Dassault in France and Marconi in the United Kingdom.

I was cheated once, and I can't be cheated a second time.

However, due to some historical reasons, the cooperation with Europe was not completed in the end, and it was not until the nineties.

The technical cooperation of the J-8 IIACT is already looking for help from Russia.

Now, at least we must use our own technology to overcome the flight control software, after all, in the factory, the second J-8 ACT fighter is being refitted, where it falls, it has to stand up from where, if it does not continue to fly, then the project will be over, and the large amount of money paid by the country will be wasted.

Anyway, we have to get these technologies up to date.

Now that you've found the problem, it's easy to talk about it, modify the program!

Take out the program developed for the BW-1 fighter in the test flight institute, add this part of the code to it, and then re-debug it according to the aerodynamics of the J-8, just like that, everyone in the 601 Institute After more than a month, the program was finally modified.

For the whole team, it is also beneficial, we have come into contact with the source code of the three-axis four-redundancy digital telex system, laying the foundation for their own future development of a new stabilization machine, Qin Feng also said, this is the only way for the development of domestic aviation technology.

Time is passing day by day, for technicians, every day is very stressful, and for Qin Feng, it also means that the day of flight after the accident is getting closer and closer.

In recent days, he has resumed test flights, and flew a few sorties on the J-8 fighter of the 112 factory to familiarize himself with the flight performance of this aircraft, which is also because he has never had the opportunity to fly into the sky recently, but the feeling of flying is engraved in his mind, as long as he flies, he immediately finds a familiar feeling.

Finally, the newly modified Jian-8 ACT fighter with a new program was pulled onto the runway, and Qin Feng, who was neatly dressed, walked towards the new plane with a calm step.

The last accident is still vivid, this time, whether Qin Feng can complete the return flight after the accident is crucial, if there is a problem again this time, the whole project will be dismounted!