The second time he went out of the cabin, Mai Dong came with a file.

At first, she was skeptical about this method, but wasn't it really holding an electric soldering iron to repair the CPU while copying a file to repair the spaceship's heat insulation tile?

"Who told you that the thermal insulation tile of the lander is the CPU?" The old cat said lightly, "It's just a tractor, what's wrong with holding a hammer and knocking on a tractor?" At that time, the workers of the Stalingrad Tractor Plant in the Soviet Union knocked out tens of thousands of tractors with hammers in their hands...... There are many more T-34 tanks. ”

Mai Dong exhaled softly.

According to the old cat, there is no such thing as a troublesome step at all in repairing the insulation tiles of the Eagle spacecraft, and laymen habitually like to think of the work as overly complicated.

The insulating ablative material expands and only needs to be smoothed, so the tool only needs a file.

"Watch out, slow down." Tang Yue stared closely, "Don't worry, your body temperature and heart rate are rising." ”

Mai Dong's extravehicular spacesuit is monitoring her physical condition in real time, and all the data is summarized in front of Tang Yue's old cat.

"I see." Mai Dong leaned to the side, blocking the glare of direct sunlight with his back, "It's easier than I thought, the outermost layer is a porous foam structure, I thought it was ceramic as hard as a tile." ”

Compared to mechanical repair, Mai Dong felt more like he was engaged in carpentry work.

"Ding!" With a bang, the workstation prompts that the calculation is complete.

The old cat glanced at it.

"Failed."

"What failed?" Tang Yue asked.

"Two processes, the Eagle lander made an unpowered re-entry simulation, and the sixty-sixth failed." "The other was to try to use the engines on the Orion spacecraft, and I ignored the engineering and technical details for the time being, and only considered the feasibility of a safe landing...... Eventually, I found out that it was a successful landing, and it could not maintain even the most basic structural strength. ”

"What do you mean?"

The old cat took off the headphones, turned around, and picked up the pen on the table to give Tang Yue a demonstration.

"This is the Eagle lander."

The old cat shook the cap of the pen in his hand.

"It's a rocket engine."

The old cat shook his pen again.

"Now we're using some kind of tape of an unknowable Zenith material, tying them together firmly, and using Iron Man's abilities, we're going to manually disassemble the rocket engine and make a control system that allows the Eagle's computer to control the engine." The old cat inserts gel pens into the cap and "throws them into the atmosphere of Mars at the end......"

Tang Yue stared at the pen in the old cat's hand.

"Do you know what's going to happen?" The old cat slowly approached, and a pair of brown cat's eyes reflected Tang Yue's face.

"What will happen?" Tang Yue swallowed.

"Big fireworks." The old cat threw the pen on the table and made an explosive gesture, "Once this patchwork thing enters the gravity circle, it will completely disintegrate, the fuel tank will explode 100% when it enters the atmosphere in a lying position, and the thin shell of aluminum alloy is very easy to deform without support." ”

"You mean, we can't use the engines on Orion?"

"Yes." The old cat replied simply, "It's completely unrealistic, you'd better die of this heart." ”

"But I want to struggle a little more."

"The Orion-2 Earthfire Transfer Spacecraft uses nine Raptor 10D high-pressure refueling engines in parallel, each with a thrust of more than 120 tons, and only such thrust can support the orbit change of the entire United Space Station, but the Raptor 10D engine is not for the Eagle lander." "This thing is almost as heavy as the Eagle spacecraft, and tying it to the lander will completely destroy the aerodynamic shape of the latter, and the already uncontrollable attitude will become even more difficult to control." ”

"Designing a flying machine is never a matter of addition and subtraction, and the people at the Central Fluid Research Institute and Skunk Works know it very well, and you know it too...... Don't struggle anymore, you can't save it. ”

Tang Yue shifted his gaze to the monitor, and Mai Dong in the video was still working hard to repair the heat insulation tile.

"Did you do all your best?"

"All configurations have been tried, and none of them have succeeded." "The engine lacks the protection of the heat shield and will burn in the atmosphere. ”

"The thrust-to-weight ratio of the Raptor 10D engine is more than 1, right? It's over 1 thrust-to-weight, right? Tang Yue asked, "If its thrust-to-weight ratio exceeds 1, we ...... Can we push back all the way and land vertically? Just like the Falcon Nine back then? ”

"I can't do it." The old cat shook his head, "The speed is too fast, the propellant is not enough, I have simulated it so many times, and there has never been a time when the Eagle spacecraft can cross 10,000 meters in its entirety." ”

"Ten thousand meters?"

The old cat nodded, "The altitude of 10,000 meters is a hurdle, once the altitude drops below 10,000 meters, the atmosphere will suddenly become dense, and the dynamic pressure on the lander will also increase dramatically...... The Eagle spacecraft with its engines tied to it will immediately lose its attitude, and the Eagle lander is not an airplane, it has no wings, and it cannot be rescued once it falls into a tumble. ”

Tang Yue grabbed his hair.

Damn it.

"Not using an engine is a dead end, and using an engine is also a dead end...... Damn, there's really no other way? ”

"But 'using the engine is a dead end' is a false proposition in itself, I am just stating to you the feasibility prediction of the workstation for the use of the Orion spacecraft engine for landing, in fact, it is too difficult to implement, Miss Mai Dong alone can not complete it at all." The old cat added, "I told her to dismantle the frigate with her bare hands, do you think she can do it?" ”

"What do you want me to tell her about this?" Tang Yue was very irritable, "Tell her that you are dead?" The Eagle spacecraft is impossible to land at all? ”

"It's not my business." The old cat shrugged, "I told you the result, and you decide what to do for yourself, or you can also tell her the result, and she decides how to do it herself." ”

Since learning that the comet is about to hit Mars, the old cat has become more and more Buddha-like, before it strictly controlled Tang Yue's life, the amount of food and fresh water was choked to death, and he woke up on time every morning, but now the old cat no longer pays attention to these idle things, Tang Yue can sleep until what time he wants.

Tang Yue asked, and the old cat was, "This is not my responsibility, you decide for yourself." ”

"I don't care about anything, what do you want......" Tang Yue slumped in his chair and sighed.

"I'm useless, I'm useless, I'm going to dig a pit and bury myself, don't bother me for the next five hundred years." The old cat turned around and left.

"Hey, hey, brother cat, stay here, I'll just say it casually, why should you take it seriously, Maidona girl is still working, you can't take the burden!"

·

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Mai Dong spent a long time smoothing out the insulating tiles, and she carefully examined the fruits of her labor inch by inch, and put the file into the tool bag with great satisfaction.

"Mr. Cat, Tang Yue, the heat insulation tile has been done." Mai Dong returned to the space station, "What's next?" ”