Genius is just the threshold for me!

Chapter 28: Training Lin Dong to be the Chief Engineer?

Ring ring—

After sending the blueprints to Lin Weiliang, Lin Dong opened the new laser weapon design drawings and pondered how to improve and refine them.

Just then, the secure cell phone next to me rang.

Lin Weiliang received the drawings and called immediately.

"Dad, what's wrong?" Lin Dong answered the phone. "Is my design drawing not working?"

"Your fuselage proportions...aren't they a bit unstable?"

The sound of a mouse moving came from the other end of the phone. Lin Weiliang looked at the blueprints for a while and said, "With a wingspan ratio of 1.68, the risk of losing control and rolling is very high."

"That's enough. This time, we used a vector engine to adjust the torque. I also made a model and tested it in a wind tunnel twice."

Lin Dong said confidently, "It's been verified that there are no problems."

After three years of study, Lin Dong can now be considered an expert in the entire field of aircraft. He understands what Lin Weiliang's question refers to.

That's the wing of an aircraft. Besides providing lift, it also plays a role in maintaining the balance and stability of the aircraft.

When the fuselage is too long and the wingspan is too small, the proportions become unbalanced, making the aircraft prone to rolling and loss of control.

The fuselage wingspan ratio is 1.68.

To put it more vividly, it's like an eagle with the wings of a chick.

Although chicken wings can provide some gliding flight, a slight wobbling will cause the body to tumble and lose control.

However, the problem of the fuselage having a large wingspan ratio is not unsolvable.

Vectoring engines that can provide additional torque, combined with more powerful flight control systems, are both solutions to this problem.

The benefits of increasing the fuselage-to-wingspan ratio are also obvious.

Because of the reduced wingspan, the frontal and wind-cutting surfaces are lowered, making it easier for the aircraft to enter supersonic speeds, reducing energy consumption at high speeds, and allowing for more agile maneuvers and faster reactions in various dogfights.

As for the final wingspan ratio, that depends on the engine performance and flight control technology.

"Two wind tunnel tests..." Lin Weiliang was speechless.

When designing a brand new supersonic aircraft, doesn't it require dozens or even hundreds of wind tunnel tests? What good are these two tests?

But then he remembered that Lin Dong designed the first subsonic model aircraft, and it was said that he didn't even do wind tunnel testing, but completed the calculation of the fuselage aerodynamic layout purely by brainpower, so he fell silent.

"I've looked at the blueprints. The fuselage is 4.92 meters long and has 5237 parts. None of them are very big. If we set it up now, it should be completed in about two or three days. Then the relevant parts will be sent directly to Laboratory No. 78."

Lin Weiliang carefully reviewed the blueprints, provided a rough timeline, and then changed the subject, asking, "Xiao Dong, are you interested in learning to design a real fighter jet?"

"A real fighter jet?"

Lin Dong was taken aback for a moment, then retorted, "Dad, I'm only in fifth grade. You're overestimating me."

What is the concept of an aircraft fighter jet?

The fuselage is 20 meters long, the wingspan is over 10 meters, the takeoff weight is tens of tons, and it has hundreds of thousands of parts.

He's cheated; he's become a genius.

But he hasn't become a god, so this is something he can't handle right now.

Although small model drones and large fighter jets are both aircraft and both designed as flying machines, their design foundations are actually worlds apart.

The structural stress, structural load, aerodynamic layout, and other factors involved in both are not simply a matter of proportional scaling.

The simplest question is thermal expansion and contraction, a physics phenomenon that even elementary school students understand.

However, if this physical phenomenon is not handled properly when applied to a fighter jet, it can lead to the disintegration of the fuselage.

Due to air friction, the aircraft enters supersonic flight, and the temperature of the outer layer of the fuselage will increase by hundreds of degrees Celsius.

All materials are subject to thermal expansion and contraction, and different materials have different coefficients of thermal expansion and contraction.

His aircraft is currently four to five meters tall, so he doesn't need to worry about thermal expansion and contraction for the time being.

Even though the temperature of the fuselage can soar to several hundred degrees Celsius during supersonic flight, the impact on the fuselage is not significant because the fuselage is relatively small.

But if it were those fighter jets that were twenty meters long and weighed tens of tons...

When entering supersonic flight, the entire fuselage will expand by more than 50 centimeters compared to its size at normal ground temperature due to the high temperature.

The expansion causes gaps between parts and deformation of the fuselage. If not properly controlled, the entire fuselage could disintegrate and shatter at high speeds.

In addition to thermal expansion and contraction, there are also a series of problems such as fuselage resonance and vibration.

These problems wouldn't have much of an impact on small aircraft, but they would be fatal for large fighter jets.

He can now complete the entire design of the Hot Spicy aircraft single-handedly, which is already astonishing. If he were to go further and design a large aircraft fighter, it would really kill people.

"It's about learning how to design, not about you being able to design everything."

Lin Weiliang corrected: "Simply put, it means teaching you how to coordinate a project."

Dad knows you have a high sensitivity to technology and can easily see design flaws and areas for improvement that others can't.

By learning how to coordinate effectively, you can maximize your talents and strengths, which is also the best path for your future development.

"You're not asking me to design, you're asking me to lead a team?" Lin Dong was taken aback, seemingly not expecting Lin Weiliang to have this idea.

He naturally understood the situation regarding his own soul vision.

It's a tool to boost your brain, infinitely enhancing your thinking, memory, comprehension, inspiration, and more.

Another is having a perception beyond common sense of the imperfections and balance, structure and perfection of all things, which allows one to easily break through the limits of technology and glimpse deeper directions and mysteries of technology.

However, the brain load from using the second ability is tens or hundreds of times greater than that from the first ability.

In recent years, he has mostly used the first ability to learn, and then used the knowledge he learned to deduce and design, making him a pure technologist.

The second ability is used only in very rare cases, and even then it only lasts for a few seconds before stopping once a direction is chosen.

But now, judging from Lin Weiliang's words, this means that he should make use of his second ability, to go from flying alone to leading a group of people, and from a pure technician to a project chief engineer.

Is it that black president across the ocean, with his relentless push for a "pivot to Asia" strategy, that's making Dad so anxious...?

A guess formed in Lin Dong's mind, and before Lin Weiliang could answer, he continued, "If that's the case, I wouldn't mind learning it. But what book should I read? Qian Xuesen's Engineering Cybernetics?"

"Don't worry about the books and materials, I'll prepare them for you."

Lin Weiliang breathed a sigh of relief when he heard Lin Dong agree, and earnestly instructed, "There's no need to rush this. Just learn at your own pace. We can hold you up for a few more years. We'll discuss the specifics when you're a bit older."

"Alright."

Lin Dong nodded: "Then don't forget my Hot 002, Dad, you said three days."

"I won't forget, you should probably go back soon too."

Lin Weiliang instructed, "Your mother is too busy to come home and cook today. She told you she's going to Uncle Xu's house for dinner, right? When visiting someone's house, be polite and arrive early, don't arrive right at mealtime."

"I know, you're even more nagging than Mom..."