Reborn in 2011, I am the chief designer of aerospace.

Under Song Xingye's guidance, Chen Xin reconstructed the function logic and introduced a completely new set of correction terms.

It was a beautiful algorithm that perfectly combined geometry and analysis, one he had never tried before.

Next, Qin Rui typed them into the computer.

Press Enter.

run.

The impact rate on the screen instantly dropped to zero, and then a perfect Jupiter probe orbit unfolded like silk in the simulated solar system gravitational field.

Qin Rui and Chen Xin were both stunned, and said in unison with admiration:

"Wow, that's amazing! I thought this vulnerability would take another whole morning to fix, but it was resolved so quickly!"

Song Xingye smiled calmly.

For these two newly graduated doctoral students, such a loophole was naturally a very troublesome issue.

But for someone who has worked on the front lines of aerospace for twenty years, this level of debugging is already something he can handle with ease.

However, this is just the beginning.

Song Xingye continued to slide the mouse to check the following content.

Soon, he found a bright red "error box" in the Matlab logs.

Worried that he might have missed something, he carefully went through the contents next to him and found no errors.

This cheat code is absolutely amazing!

It can quickly and accurately pinpoint vulnerabilities without missing any, which is much more convenient than proofreading line by line by yourself.

"Pause here... The gravitational constant, initial vector, and integration step size are all correct, but we have overlooked the resonance effect of Jupiter's gravity in long-term integration."

Song Xingye glanced at it and quickly offered a solution, pointing to the 'highlighted' content in his field of vision and saying:

"From here, when flying past Europa's near-apex point, due to the accumulation of floating-point truncation errors, the probe's actual altitude will be 2 kilometers lower than the theoretical altitude."

"In the vastness of space, 2 kilometers is insignificant, but in the extreme operation of a gravity slingshot, those 2 kilometers are the boundary between life and death, understand?"

Qin Rui and Chen Xin were not incompetent teammates; they immediately understood and realized the truth.

Chen Xin hurriedly went to revise the mathematical formula.

Qin Rui took off his glasses, wiped them haphazardly with the corner of his clothes, and asked with a curious look:

"Hoshino, you're amazing! This formula is so logically convoluted, and you just glanced at it and spotted the problem without even writing a draft? How come I didn't know you had this ability before?"

Song Xingye paused slightly.

How do you explain that?

Tell them that in your eyes, that formula is like a major artery that is gushing blood, and it's hard not to notice it.

"intuition."

Song Xingye gave a perfunctory reply, then his expression turned serious, forcibly steer the conversation back on track:

"Old Qin, the key now is how to finish the revisions within 48 hours. I've skimmed through it and found that there are quite a few areas for improvement in our plan, at least twenty or thirty."

"How many? Twenty or thirty!" Qin Rui exclaimed. "Is our plan really that bad?"

Song Xingye nodded silently.

All he could see were small red squares floating up and down in his field of vision.

All errors!

"Senior Brother Song, how... should we change it?"

Chen Xin had just finished fixing the previous bug and finally looked up, now completely convinced.

But he still couldn't help but feel anxious:

"The current architecture is based on global search using genetic algorithms. If we were to make a major overhaul, even the underlying integrator would need to be changed, and many optimization strategies would have to be completely rebuilt, which would be very troublesome..."

"Then let's start from scratch."

Song Xingye said decisively.

Qin Rui's mouth dropped open. "Less than 48 hours left? Are you kidding me?"

"For this kind of problem, if you want to traverse the Jupiter system with limited fuel, using a genetic algorithm is already taking the long way around. It completely relies on the computer's brute-force search to find the orbit."

Song Xingye made no attempt to hide his disdain for this method of problem-solving.

"Using a computer to blindly stumble around until you find a path? This kind of trajectory, derived from piling on computing power and brute-force enumeration, has absolutely no aesthetic appeal in physics; only bookworms would use it!"

Qin Rui weakly interjected, "But... wasn't it you who suggested using genetic algorithms to solve problems?"

"Oh, really? Then I take back what I just said."

Song Xingye's momentum faltered, and he scratched his head awkwardly.

Chen Xin quickly tried to smooth things over: "If we don't use a genetic algorithm, what should we use?"

Song Xingye immediately said seriously:

"For the Jupiter system, which has multiple moons and multiple bodies, the differential correction method combined with the Pontryagin principle is more suitable."

Upon hearing these two terms, Qin Rui and Chen Xin were both taken aback.

I've seen the theory in textbooks, but very few people actually dare to put it into engineering practice in competitions.

Because the logical transformations are too complex.

To save time, everyone uses genetic algorithms. After compiling the model, they just hand it over to the computer for trial and error.

Qin Rui was unsure: "Will this work? We don't have much time left."

Song Xingye said, "It's precisely because we're out of time that we want to take a shortcut."

Seeing this, Qin Rui and Chen Xin stopped arguing and decided to just follow the instructions.

After Song Xingye erased the whiteboard, the marker flew across the surface of the board.

He deconstructed the differential correction method and the extremum principle, boldly introduced the Poincaré section and Fourier transform, and constructed a completely new algorithm framework.

Although the two were initially confused, their eyes grew brighter as the deductions deepened.

Genetic algorithms are like picking up seashells on the beach, having the computer pick them up one by one and compare them, which is exhausting and the calculation speed depends entirely on the computer's computing power.

The new algorithm is like creating a sieve. It feeds data through a series of extremely elegant analytical inequalities, filtering out those that do not meet the conditions instantly, leaving only the most perfect "pearls".

After a brief discussion, Song Xingye assigned tasks to Qin Rui and Chen Xin and got busy again.

They only have two days to work on it, so they have to make the most of every second.

"Old Qin, open the parallel computing tools in Matlab. We need to utilize the computing power of all the idle machines in the lab!"

Song Xingye was busy in front of a computer, shouting without turning his head.

"Huh? Oh! Okay!"

Qin Rui had now been completely reduced to a tool, frantically operating the server terminal.

"Chen Xin, could you help me look up the data released by the Jet Propulsion Laboratory in 2009 regarding the final stages of the Galileo spacecraft? I need to verify a parameter in a gravitational model!"

"Understood, Senior Brother Song."

Chen Xin replied quickly.

He had a strange feeling that the way Senior Brother Song was behaving at that moment was too much like his mentor…

No, he was even more professional and imposing than his mentor, a Yangtze River Scholar.

Three hours later.

"Done!"

Following the algorithm written by Song Xingye and Chen Xin, Qin Rui typed the last symbol and breathed a long sigh of relief.

Song Xingye leaned back in his chair and said, "Let's try running the whole process."

Qin Rui nervously pressed Enter.

Inside the Sky Tower's laboratory, three workstations roared to life simultaneously.

The progress bar is moving forward rapidly.

T+100 days... Europa flyby, successful.

T+200 days... Ganymede flies by successfully.

T+400 days... Callisto finally entered orbit and is locked in!

The final settlement data popped up on the screen:

Mission Success

Total pulse ∆V: 1600m/s.

"1600?"

Qin Rui stared at the number, his eyes nearly popping out of their sockets. "Holy crap!"

"How many?"

Chen Xin rushed over, staring excitedly at the screen. "1600? I remember looking at the forum posts yesterday, the Beihang University team, which was temporarily in first place, had a time of 1550 m/s? Before, the gap was 15%, but now they're almost catching up!"

"Song Shen is amazing!"

Without realizing it, even the way Qin Rui was addressed had changed.

Song Xingye looked at his two teammates, who were already laughing hysterically, and a slight smile appeared on his lips:

"We're still a bit short. We need to keep optimizing; maybe we can bring back a gold medal?"

Upon hearing about the gold medal, Qin Rui and Chen Xin became even more excited.

If this had happened yesterday, it would have been utterly a pipe dream;

But now, a miracle seems within reach...

Just as the three of them were rubbing their hands together, ready to finish revising the plan in one go, Qin Rui's stomach started growling first, followed by Song Xingye and Chen Xin's stomachs.

The three of them exchanged an awkward glance and realized that a whole morning had passed without them noticing.

"Well, food is essential for life, let's eat first and then get busy this afternoon?" Qin Rui smiled awkwardly.

"Let's go to the second dining hall?" Chen Xin suggested.

Song Xingye suggested, "How about we go to South Street for some spicy hot pot?"

Qin Rui was taken aback: "Malatang? Didn't we just go for it yesterday? You're eating it again? Aren't you tired of it?"

"I just want this. Are you guys coming? If not, I'll go by myself."

The street was demolished a few years after graduation, and Song Xingye hadn't tasted that spicy hot pot for many years, so he was naturally craving it.

Upon hearing this, Qin Rui and Chen Xin caught up, laughing and saying, "Okay, okay! We'll do as you say, we'll have spicy hot pot for lunch!"