Back in 1978, I was admitted to Northwestern Polytechnical University.

Chapter 41: Does what you're saying make the J-8 trash?

"In the United States, there is a special group called the fighter jet mafia. It includes U.S. Air Force officers, aerospace engineers, and civilian employees in the defense sector. They repeatedly studied the future development trends of fighter jets and finally came up with a simple formula."

As Qin Liang spoke, he walked to the small blackboard next to the projection screen and quickly wrote down a simple formula: The unit residual power of a fighter jet = (thrust - drag) * speed / weight.

"In intense air combat, this SEP, or specific excess power, gives the fighter jet with higher unit excess power an advantage," Qin Liang said. "Nothing like variable-sweep wings or high-altitude, high-speed comparisons can accurately compare aircraft performance; only this formula can. It's simple and elegant..."

Talking about mathematical elegance with these people seemed a bit much, so Qin Liang looked down somewhat embarrassedly. Sure enough, most people were dumbfounded, but there were also a few bright eyes watching him. Clearly, they knew the formula.

"Specifically, it's about high thrust-to-weight ratio, low wing loading, and sufficient range and loiter time... This energy maneuverability theory is the product of the F-16," Qin Liang said. "Everyone should have seen the F-16's appearance, but they don't know its specific performance. I can give you a brief introduction here: its overload is as high as 9G!"

"What this data means, I think everyone here should understand. For example, whether it is a head-on or tail-to-tail air-to-air missile, even if its overload is as high as 30G, as long as you make a 9G evasive maneuver in the right position, you can shake off the missile!"

Everyone present was a professional. If someone asked why the 9G missile could outrun the 30G missile, they would probably be ridiculed by the others.

"In close-range combat, this aircraft also has formidable performance. For example, its roll rate of 324 degrees per second in the first 90 degrees can easily shake off any opponent and then bite the tail of the opponent. Whether using machine guns or missiles, it can easily take down the opponent!"

"That's impossible! Pilots can also lose consciousness at 9G!" Finally, a voice rang out.

If it were Elder Tu introducing him, then no one present would have interrupted him. But now it's a young upstart, and what he's saying is utter nonsense. How can people not question it?

Qin Liang looked over and saw that the speaker was a middle-aged man he didn't recognize. However, he recognized the man next to him; it was Old Gu, who had single-handedly built the J-8 fighter jet. It seemed that this man must be from the Northern Institute!
"Yes, to prevent pilots from losing consciousness, the designers have done a lot of work, such as using side stick operation, and it has a force feedback system, a highly tilted seat that is 15 degrees more reclined than a regular flight seat, and a more professional anti-G suit... Comrade, do you think the Americans are bragging when they say 9G overload?"

Old Wang's face was a little ugly. In this day and age, if the Americans release data, it must be correct. No one would doubt that the Americans are exaggerating. But... if we follow the Americans' standards, wouldn't our own planes become garbage?
The J-8 was built to high-altitude, high-speed standards. To reduce drag, the fuselage is slender and the maximum overload is only 5.5G. If you are not careful, you will break your back. It has absolutely no chance of winning against an aircraft with a 9G overload!
In later generations, the naval and air force hero Wang Wei was dragged down by the J-8. If he had been in the J-10 or J-11, he would never have died in the sky. After all, the slender J-8 had poor maneuverability!

“Even if the data from the United States is accurate, it is still a product made with advanced Western technology. Our Eastern aviation industry is technologically backward and simply cannot compare with the West,” Old Li said.

"Comrade, don't underestimate yourself. Haven't you heard that the Americans came to our Northwestern Polytechnical University to learn from us? They admitted themselves that they are not as good as us!"

"What? How is that possible!"

Seeing the disbelieving looks from the crowd, Old Lin said, "I was there at the time, and the Americans did admit that their technology was inferior to that of Northwestern Polytechnical University. Several leaders from our Air Force also heard it."

Old Wang and Old Li were dumbfounded. They believed they couldn't compare to the United States, but the United States admitted it couldn't compare to Northwestern Polytechnical University. Did that mean that the technology of their Northern Institute was inferior to that of Northwestern Polytechnical University?

Many people became interested, and Old Mo spoke up: "Qin Liang, tell us what happened back then?" "Yes."

So Qin Liang started by talking about SCI papers, then mentioned that he had come to the journal to ask for advice, Northwestern Polytechnical University held a symposium, and afterwards Professor Lin treated him to dinner...

"Qin Liang, you're really something! Working together with Lao Lin, you managed to get your hands on three computers. Now, our aviation industry system won't have to worry about computers anymore!" One of the leaders present said, "You keep one at Northwestern Polytechnical University, and send the remaining two to the Northern Institute!"

Tu Lao's face instantly darkened. What a joke! The computer was brought by Qin Liang for the J-7 modification project!

“Of course, no problem, but… I promised to give them the data once a month,” Qin Liang said. “I originally planned to use two computers for them, one for ourselves, and you can take both of them. You can then provide the data to the Americans.”

The leader who had just spoken immediately fell silent.

Who would?

Stealth design and radar diffraction formulas were things that most people in the audience were hearing for the first time!
Old Li and Old Wang exchanged a glance and nodded. Then, Old Wang stood up.

"Comrade Qin Liang, aren't you being too frivolous? Since this stealth design is so important, how could you tell the Americans about it? To put it mildly, this is an academic exchange; to put it more seriously, this is a leak of secrets—this is revealing our most advanced aviation technology to the Americans!"

Old Wang looked at the assembled leaders and said, "Distinguished leaders, I suggest that we seriously investigate this leak! We must investigate Qin Liang's background and identity!"

Old Tu's face darkened further: "Old Wang, don't make a mountain out of a molehill! Publishing papers is a requirement of the relevant national departments. As for stealth, it's just an exploration of future technologies! You're bullying a kid like Qin Liang, have you no shame? If you have a problem, come at me!"

“Old Tu, your responsibility is yours, and Qin Liang’s responsibility is Qin Liang’s. If stealth aircraft really is the future trend, then it should be the number one project! You’re an old comrade, don’t you understand these things?” Old Li also joined in.

Holding people accountable is secondary; the key is to ruin this J-7 modification project!

"Sigh." Qin Liang sighed, "I did know that it might involve leaks, so I repeatedly asked Secretary Shen to confirm during the meeting. Even when it came time to eat, I didn't make any decisions on my own. I only spoke up after Secretary Shen agreed."

After speaking, Qin Liang looked towards the conference room: "Has Secretary Shen arrived? Where is Secretary Shen?"

Secretary Shen's face turned pale.

(End of this chapter)