"I think you're a little optimistic at this time", Wang Yinan looked at Chief Master Yang with a smile.

"Hehe, it's a bit optimistic, but we are sure that we can solve the problem within fifteen months", Chief Master Yang smiled a little embarrassed.

"Is there all the food in the army?" , Wang Yinan made a joke, "You are not Cao Cao, and I am not Xu You, let's not be empty",

"Although I don't know much about flight control programs, theoretically, any control rate can be thought of as some specific solution to the equation of the following variables",

Wang Yinan casually wrote on the whiteboard next to him: lift body, control surface, thrust control, "This is the part that can be controlled, we think these are variables"

Lift, drag, eddy currents, RCS (radar reflection area), "these are not fully controllable and can be considered constraints, that is, constants".

"The solution still varies with time, partial differential equations," Wang added.

"The information I saw on the plane when I came here gave a detailed introduction to your situation",

"I don't know much about the technical details of the aircraft, but I noticed that as a result of the replacement of the engine, you rewrote 30% of the flight control code",

"However, in terms of the influence of the engine on the aerodynamic shape, and the effect on the thrust response curve, the part of the control rate failure should be much greater than 30%, which means that even now, you should be arranging for the team to rewrite at least 70% of the part."

"I'm not wrong," Wang Yinan said.

Chief Master Yang's face was red and white for a while, he looked at Wang Yinan with the same eyes as a monster, and said to Qian Zhonghua,

"Earlier you asked my comrades in the Air Force to tell me that there would be a monster coming",

"Now I finally believe it", "You guys named Wang Yinan, you're really a monster".

"If that's all it takes, I'm sure it's still possible for you to finish it in a year and a half," Wang Yinan knocked on the whiteboard, and made up for the last knife in Chief Yang's murderous gaze.

"I noticed that all the test flight tests so far have been carried out at subsonic, and even if I don't know much about aviation, I know that for aircraft, subsonic, transonic and supersonic are completely different aerodynamic fields"

"Even if you make the most optimistic estimates, at least half of your current flight control rate, entering the transonic and supersonic realm, needs to be rewritten"

"So, my estimate is three years", Wang Yinan threw away the pen and closed the coffin.

"Fastest".

Qian Zhonghua was a little stunned on the side, he knew that Wang Yi was a male cow, although he had not been involved in aviation before, but it should always be useful to bring him over, so he tied him up.

I didn't expect Wang Yinan to be so good, looking at Chief Master Yang's stunned appearance, Qian Zhonghua knew that nine times out of ten, Wang Yinan was right.

"Don't sell it", Qian Zhonghua glared at Wang Yinan.

"The 116 Institute was supported by my old man, and it was he who chose Shudu to undertake the research and development of a certain type of fighter against public opinion."

"If it really takes three years to start test flights again, there will be too many variables," Mr. Qian said.

Chief Master Yang shook his head, "Very good and precise, if it weren't for the wrong occasion, I couldn't help but applaud you", he said to Wang Yinan,

"Your estimated time is exactly the same as our internal estimate",

"If there is no other way, we will only have time to report truthfully, after all, science cannot be false."

"We can't let our test pilots take risks for the immature flight control system"

The five-minute time was fast and the meeting began.

As a representative of the opposition, G Lao continued to spray,

"Summing up, I propose to terminate the test flight work of the XXX model fighter for a long time so that 116 has enough time to continue to refine the flight control system based on the turbofan-51,"

"So that by the time the turbofan-51 is available, the XXX model fighter will be able to reach its original design state",

The representative of the Air Force couldn't help it, "Then how long do you estimate the wait?"

"Optimistic estimates, three years, of course, what will happen in three years, none of us can guarantee",

"So we still need to have a more secure backup solution",

"The conventional layout, the YYY model with a mature engine, I think it can continue to develop"

"The indicators of the YYY model are too poor, and they are not at the same level as the F25 of the United States", the Air Force stopped doing it.

"But it's still a lot better than the third-generation aircraft we are currently equipping, and it's better than nothing."

Mr. G's speech was echoed by many people, and seeing that the leader of the general assembly was going to make a concluding speech, he even began to vote.

Wang Yinan looked at the worried Chief Teacher Yang, and Qian Zhonghua, who was full of anxiety, and several technicians from the 116 institutes were about to cry.

Of course, there is also a group of gray-haired old people in the conference room, no matter what they think about this or that, but really, Huaguo Aviation Industry is what they cast with black hair and sweat.

If you give up, admit it, and go back, maybe what you miss is not a model, but an opportunity to catch up with the world's most advanced level, Wang Yinan feels that he should still do something.

The worst outcome, he thought, would be to delay for two or three months, and finally prove that his idea was wrong.

"Okay, I'm not a soldier, I shouldn't shoot if I mess up", Wang Yinan made excuses for himself, walked to the conference table, picked up the microphone, Wang Yinan said.

"Can you say a few words?" the Air Force officer who went to pick him up at the time immediately said on the side, "This is our Air Force special expert, Wang Yinan"

Wang Yinan nodded to the leader of the general assembly, "I'm sorry, before I speak, I have a few questions to ask Chief Master Yang first, just two minutes, it won't delay everyone's time."

Wang Yinan pulled Chief Teacher Yang and Qian Zhonghua out of the door and said to Chief Master Yang,

"I have a few questions for you, which are very important and you must answer them truthfully"

"If you ask, I will answer truthfully without involving a higher level of secrecy than this seminar," said Mr. Yang.

"You are now using supercomputers to simulate the flight state, and what proportion of the actual flight can be replaced",

"Basically, it can be completely consistent," replied Mr. Yang.

"That's not right, if it's completely consistent, the few accidents that occur in theory can also be simulated on a supercomputer," Wang Yinan asked suspiciously.

"This brings us to the issue of coverage."

"We extracted the attitude, flight altitude, temperature, wind speed and various parameters of the fighter at the moment of the accident, and after inputting them into the supercomputer, we successfully reproduced the accident situation."

"But before an accident, we can't exhaustively list all the situations that will occur in the air, we can only make reasonable extensions and analogies"

"What we didn't expect was that at that particular altitude, air density, wind speed and flight conditions, an eddy behind the canard wing broke unexpectedly"

"This creates an additional unstable negative pressure"

"The flight control rate does not take into account the appearance of this negative pressure, or the rudder surface is controlled according to the conventional scheme"

"This created a positive feedback and the plane quickly went into tailspin"

Wang Yinan nodded, "Understood."

"The second question, is the flight control rate described in ADA language?" (ADA is a programming language developed by the military of the United States specifically to serve the military, so the true love of rabbits is actually eagle sauce), Wang Yinan asked.

"That's right, the rumors on the Internet are all true"

Wang Yinan breathed a sigh of relief, ADA is a programming language with a very strict syntax, in the early days of Gödel system design, Wang Yinan and they have been involved, so the formalization of the ADA language is still very studied, if so, it is possible to automatically formalize all flight control rates.

"The last question, the simulated and actual data of the control rate of all intermediate states in various situations, is there still it?"

"Of course, we have at least 20 T's of data, but it's all top secret of top secrets"

Wang Yinan turned to Qian Zhonghua, "There is one more question, I don't know if I should ask you or Chief Yang"

"What's the problem," Qian Zhonghua asked, "Is there anything about me here?" ”

"Of course, who of you will pay for the money", Wang Yinan said as a matter of course,

"Help is help, of course the cost has to be agreed, if you want to take this job, all the computing resources of the Gödel system have to be invested",

"No cost, you let us all drink the northwest wind"

Chief Master Yang is a little blindfolded,

"You wait first, what is the cost and what does not cost", Chief Engineer Yang asked.

"You mean you have a solution to our problem?"

"How is it possible, even if you can get the flight control system of the F25 in the United States, it is useless, our control rate and complexity are a few streets away from the F25."

Wang Yinan smiled, "According to the traditional way of thinking, of course, there is no way, and I can't write flight control software." ”

"But from a neural network point of view, the problem you're facing is not unique at all"

"In the limited field, fluid mechanics is still relatively simple in nature, the actual speed, temperature, air density, wind speed, etc., just some external factors"

"Limited elements, control surfaces, engines, lifting bodies"

"Enough training samples, you have 20T of raw data"

"With these things, it is enough for the Gödel system to play"

"I'm sure I can find most of the flaws in your control rate and make iterative corrections."

"As long as your data is complete enough, that is, the sample size is large enough, according to previous experience, in addition to finding defects, the overall efficiency can be improved by more than 50%."

"I don't believe it, don't lie to me", obviously Chief Yang still doesn't want to believe it.

"Do you know the beautiful little pig who won a hundred battles a few days ago", Wang Yinan asked.

"You know, all the young people in our house have carefully studied her game, and everyone agrees that there is a powerful artificial intelligence behind her."

"It can't be a level that humans can achieve"

"Meimei Meimei Piggy is our employee, you get the idea"

Chief Master Yang was stunned, "No?"

Wang Yinan turned to Qian Zhonghua, "How to say the cost, don't want us to make a move without 10 million soft sister coins, even the electricity bill is not enough."

"Funding is not a problem", Qian Zhonghua has not yet spoken, Chief Yang has come to his senses, "The flight control system is the brain of a certain type of fighter aircraft"

"As long as we can solve the problem of the brain, we can give you half of the budget of the entire flight control this year."

Wang Yinan asked Qian Zhonghua stupidly, "Do you have money or do they have money?" ”

Qian Zhonghua slapped him on the head when he returned his hand, what do you say, "They have to sell a plane for hundreds of millions of soft sister coins",

"Who do you say has money".

"Don't be in a hurry to be happy, if it can't be solved, I guess I won't be able to do it anymore, and I will go back and take a group of subordinates to eat you," said Chief Master Yang.

"Haha, you say that, I kind of want to deliberately smash the act, if I can get you to come over, it's worth it", Wang Yinan said.

"Don't even think about it, are you sure?" Qian Zhonghua asked, "Don't be reluctant"

"Eighty percent of it, as long as the data of 116 is enough."

"The data is absolutely fine, all our successful or unsuccessful data has been completely preserved," said Mr. Yang.

"In three months, I promise to give a certain type of fighter a brand new brain", Wang Yinan also let go.

"The problem is, it's not easy to convince these people inside", looking back at the group of bigwigs in the conference room, Wang Yinan was still a little weak in his heart,

"It's easy for you to trust me, it's too hard for them to believe in me."