Genius is just the threshold for me!

"The atmosphere above 6 meters is extremely thin, and given that the Hot Air Spacecraft is designed for hypersonic flight, atmospheric drag is almost negligible. Considering the deceleration caused by Earth's gravity at this altitude of 9.6 meters per second..."

Jiao You looked at the Hot No. 4, whose temperature was rapidly decreasing due to the thin atmosphere and reduced aerodynamic friction heating.

He quickly calculated in his mind using atmospheric models, and then couldn't help but exclaim, "This hot No. 4 can reach an altitude of 600 kilometers!"

At extremely high altitudes, there is no atmospheric resistance, and Earth's gravity slows the vehicle by less than ten meters per second. At speeds of Mach 10 and over three thousand meters per second, this is simply not enough to shake the inertia of the Hot 4 sprint.

600 kilometers.

This is far beyond the Kármán line, which serves as the boundary between space and the atmosphere, at an altitude of 100 kilometers, and even surpasses the International Space Station, which operates in a low-altitude orbit of 400 kilometers.

Although due to its first cosmic velocity of less than 7.9 km/s, the Hot Air Spacecraft will eventually be pulled back by Earth once its inertia is exhausted.

But to send an aircraft soaring to an altitude of 600 kilometers in space is absolutely unheard of and unseen.

"600 kilometers altitude... Xiao Dong, take apart this aerial photography cannon and replace it with laser weapons!"

At this moment, Wang Xingguo, watching the Hot Star hurtling towards outer space, seemed to have an idea. He ran to Lin Dong's side and said excitedly, "In space, the laser's power is almost completely reduced; that means we can directly shoot down satellites!"

"..."

Lin Dong watched as Wang Xingguo rushed over, even more excited than himself, and his lips twitched as he said speechlessly, "Godfather, the engine has stalled. The Hot No. 4's battery can only keep the system running for 30 minutes. If we switch to the previous laser weapon, it will shut down after three shots."

"Three shots will do, one shot for one, three shots for three, then after it falls, rinse it again, and there will be three more..."

Wang Xingguo remained excited, saying, "Low and medium orbit mobile satellites are hard to aim at, so we can directly target high orbit geostationary reconnaissance satellites. These things don't move relative to Earth, so they're easy targets."

"Ah, yes, yes, yes, yes."

Everyone has their own area of ​​expertise; not everyone is as knowledgeable as I am.

Lin Dong understood Wang Xingguo's lack of knowledge in the field of lasers, but he was also too lazy to explain to such a laser illiterate.

High-orbit geosynchronous satellites, each at an altitude of 36000 kilometers.

Although lasers experience almost zero attenuation in outer space, they are not without attenuation. To actually shoot down a geostationary satellite, a power output of at least 500 kilowatts would be unthinkable.

His current idea can only be realized when the next generation of detonation engines is developed, and a laser weapon is installed above to shoot down low-orbit reconnaissance satellites.

I'm serious.

Wang Xingguo, still excited, said, "We can replace the light-transmitting thermal coating with a solar circuit underneath, and then install an electric propulsion directional engine. This way, we can adjust the attitude and aim in outer space, which is equivalent to a mid-space fighter jet."

"Godfather, don't make a wish, there are no shooting stars today." Lin Dong was speechless.

He discovered that since he became the chief engineer in the game, his godfather Wang Xingguo only needed to attend meetings and show off, and no longer needed to work hard to learn how to take on the burden like before.

He's starting to resemble a wishing doll, constantly trying to find ways to make wishes in front of him.

Although the idea of ​​replacing it with a light-transmitting heat-transmitting coating and then arranging the solar circuit is quite good.

Given the intensity of light radiation in space and the size of the Hot 4 rocket's fuselage, it can easily achieve a charging power of over ten kilowatts.

Moreover, when he was researching Hot No. 4, he also knew that there were two coating materials that could meet the requirements.

One is a transparent aluminum oxynitride ceramic, which can withstand high temperatures of 2150 degrees Celsius. When used in combination with hafnium carbide, it can meet the requirements of the Hot No. 4 solution.

Another type is thorium oxide-yttrium oxide transparent ceramic, which is still in the laboratory and can withstand high temperatures of 3100 degrees Celsius.

But shooting down satellites with lasers has never been a matter of energy.

The problem is that the Hot Aircraft is too small to solve the issues of stable aiming and laser power.

"Lin Dong, the Hot Spicy Train is down to Mach 0.3, almost at its top speed..."

Mach 0.3, approximately 100 meters per second.

Given the Earth's gravity, at this height of 8.19 meters per second, the body will decelerate, reaching its highest point in about ten seconds and then begin to fall back down.

"Okay! Let me see!"

Lin Dong turned around, glanced at the flight interface, quickly typed a few lines of code on the keyboard, and then pressed the Enter key.

Di-

Start the super drone that has been kept off to save power, then adjust the lens angle, filter, and focus.

Crack—

The entire main interface image flashed briefly.

Everyone held their breath and looked at the screen.

The next moment, an aerial photograph taken at an altitude of 628 kilometers appeared on the 200-inch screen.

This is a high-definition image that occupies 80% of the frame, with azure blue dotted with white clouds, a clear arc at the edge of the atmosphere, a patch of yellow scattered in the upper left, and a continuous expanse of shimmering human stars on the right.

To the left rear of the planet, a great sun was casting its endless light, illuminating half of the entire planet...

"So impressive!"

"Is this our Earth?"

Xu Qingling opened her eyes wide and stared at the blue planet on the screen. Her expression was full of shock and amazement, and she still held onto Lin Dong's clothes tightly.

"Yes, a behemoth that's 46 billion years old."

Lin Dong smiled and answered, staring at the planet for a long while.

As the two were talking, Hot No. 4 reached its highest point and, under the influence of Earth's gravity, began to fall from an altitude of 628 kilometers.

Speed ​​8.19 meters per second... Speed ​​16.38 meters per second... Speed ​​24.57 meters per second...

Almost every second.

The Hot Spot's descent speed would increase by nearly ten meters due to Earth's gravitational acceleration.

Soon, in just over five minutes, the Hot Air crashed back to an altitude of 6 meters, its entire fuselage glowing red due to atmospheric friction.

But the next moment, the speakers emitted a simulated engine roar.

At a descent speed of Mach 10, the supercharged engine restarted, unleashing tremendous thrust. The entire fuselage traced an arc in the sky, soaring towards Chengdu in the sunset.

Rumble!

Thirty minutes later, a roaring sound came from the sky.

A jet aircraft, entirely black and gleaming with a metallic sheen in the setting sun, descended from the sky and landed steadily on the test site. After gliding for more than a hundred meters, it braked and slowed down before coming to a smooth stop at the entrance of Xu Ziming's final assembly workshop.

hum-

The engine's intake fan blades started up again the next moment.

A high-powered electric motor drives the engine, and the thrust ratio of the two engines is precisely controlled. The car then turns and enters the workshop.

"Let me see!"

Xu Ziming had just closed the workshop door.

Jiao You dragged the metal flaw detector and structural detector over, excitedly scanning the fuselage: "The entire fuselage is intact. The thermal protection materials and workmanship are perfect..."

But the next moment, Jiao You inserted the extended metal flaw detector into the nozzle of the supercharged engine. Because there was no turbine obstruction, it went directly into the engine through the channel.

Di-

I pressed the probe button, and lines of data appeared on the screen.

Jiao You checked it and a look of heartache immediately appeared on his face: "It's too violent, it's flying too violently... such continuous acceleration and sprinting, in less than an hour of test flight, has already consumed dozens of hours of its lifespan."

The engine's afterburner mode is an emergency mode.

Because once activated, lifespan depletion will increase by tens or even hundreds of times, fuel consumption will increase by 1 to 3 times, but only a 30% to 50% thrust increase will be achieved.

In this way, pilots will make tactical assessments regarding afterburner mode, trying to avoid using it as much as possible, and if they must use it, they will control the duration and avoid using it for as long as possible.

Driving like Lin Dong for several minutes at a time, using afterburner to reach higher altitudes, treating afterburner mode as the regular mode... if someone did that in the military, unless it was a special emergency, they would be punished upon landing.

"Jiao Gong, don't feel bad about it. This kid has always played like this."

Seeing Jiao You's distressed expression, Wang Xingguo calmly said, "If one day he becomes overly cautious and treats the aircraft like a precious toy, then the sun will truly rise in the west."

There was a time when he felt the same way Jiao You did.

Looking at these aircraft that cost tens or hundreds of millions of dollars to build, and how their engines are overloaded and lose a fraction of their lifespan in a single flight, I can't help but feel a little overwhelmed.

But after seeing and experiencing so much, and with his ancestors completely ignoring him when they got interested, he naturally came to terms with it.

In Lin Dong's words, when it comes to technology, out with the old, in with the new.

And just as he said, every time the old aircraft was not completely scrapped, a new one would be built.

"Uncle Xu, Godfather, Uncle Jiao, we're going back now. You can check Hot Pot now. Just send me a copy of the report later."

At this moment, Lin Dong and Xu Qingling walked over from Laboratory 78 and waved to Xu Ziming, Wang Xingguo, and Jiao You.

He has never been interested in these post-test flight medical examinations.

Xu Ziming and Wang Xingguo, on the other hand, seemed to enjoy this kind of thing immensely.

In Wang Xingguo's words, a brand-new aircraft undergoes a process of checking and comparing the differences and changes in its condition before and after a test flight, both before and after a high-intensity test flight.

This is a great learning and improvement process, allowing you to understand some directions for process improvement and design improvement ideas.

Although Lin Dong felt that this little bit of learning was not as effective as the two and a half minutes he spent figuring it out himself.

However, he still gives his full support to his elders' learning interests, leaving the hot pot restaurant here for them to do as they please.

Xu Qingling told Xu Ziming, then walked over to Lin Dong with her schoolbag on her back, her voice filled with a mix of joy and admiration, "So this is what it looks like when you're in space, taking aerial photos of the entire Earth. The whole planet takes up most of the field of view; it's really breathtaking..."

"That's why some astronauts have psychological problems when they return. It's a feeling of insignificance when facing the entire planet, which is said to be a psychological fear that goes beyond acrophobia."

Lin Dong smiled and said, "However, aerial photography is still a bit lacking; it doesn't provide the same direct, visual experience as astronauts in space..."

"Seeing it with your own eyes, you really want to go to heaven and look down on the whole earth?" Xu Qingling said with a look of surprise.

"I'll definitely take a look when I have the chance in the future."

"We'll talk about it when you have the chance."

Xu Qingling smiled, then suddenly remembered something: "We're going to visit Xia Ran tomorrow, what time should we go?"

"You can decide that. Just let me know when you're ready to go," Lin Dong said nonchalantly.

"it is good."

Xu Qingling nodded, and the two chatted for a while. After leaving the No. 78 laboratory, they naturally switched to talking about daily life, chatting and laughing as they walked home in the afterglow of the setting sun.

"Ziming..."

Wang Xingguo glanced out the window at the young men and women walking home side-by-side, chatting and laughing. He then looked at Xu Ziming, who was packing up his tools, preparing for a thorough inspection of the Hot Pot restaurant. Suddenly, he asked curiously, "You really admit it?"

"What did I admit to?"

Xu Ziming raised his head and glanced at Wang Xingguo expressionlessly.

"Well, that's true."

Wang Xingguo couldn't help but laugh, shaking his head and saying, "Putting aside this child's feelings, talent, and future... just this one academician spot, and now another one for the partial patent revenue from his personal invention of lithium batteries, if I had a son-in-law like this, I wouldn't dare to speak to him directly, I would have to coax him."

"Damn you, Wang Xingguo!"

Hearing these sarcastic words, Xu Ziming grabbed a torque wrench, his face darkening as he cursed, "Do you even have a daughter? And yet you're too afraid to speak up for your son-in-law... If you're so envious, send your Wang Rui to Siam for a 're-education' trip!"

"Sigh, no violence allowed, your insults won't do any good."

Wang Xingguo quickly took three steps back: "If you're so capable, go back and scold Xiao Dong..."

"roll!"