"Scream!" Tang Yue pointed to the screen and turned around to call the old cat. *Say* with *dream* small*

"Shout? Hasn't Lu Xun's anthology been sorted out? The old cat buried his head in tapping on the keyboard, "The Scream" and "Morning Flowers and Sunset" have already been sent out, right? Mr. Zhou Shuren's deafening voice has been forever remembered by this universe. ”

"I'm talking about that painting, Munch's oil painting 'The Scream'!" Tang Yue clamped his cheeks between his hands, his eyes narrowed and imitated the image of the person in the painting, "Is this the real thing?" ”

"Are you stupid?" The old cat buried his head in the keyboard, "The real thing is in the Halton Museum in Canada, and the earth is gone, and you are just a scanned photo." ”

"I asked if it was a photograph of the real thing."

"Identify it yourself." "You look at the painting from all angles and directions, and if the person on it is staring at you all the time, it means it's genuine." ”

Tang Yue straightened up, twisted his neck to look at the screen from all directions, and was taken aback after a moment.

"Oh, hey, yes, this guy is really staring at me...... I'm still weird. ”

The old cat sighed.

In all respects, Tang Yue's IQ is not among the top people in the world, and perhaps the simplicity of his brain is also an important reason why he has successfully survived so far.

"If you look at any portrait of a person with an eye in the center of the eye socket, you will feel that it is staring at you, and this is your psychological effect, and it has nothing to do with the real thing." The old cat picked up the manuscript paper in his hand, which was already full of dense formulas and numbers, and compared it with the data on the monitor, "Hmm...... The ballistic coefficient did not exceed 100kg/2, and the damping coefficient of this thing at zero angle of attack was 186......"

"Really?"

"You can try it yourself." The old cat said.

Tang Yue drew a cat face on the white paper, and drew a pair of huge eyes, and then stretched out his arms on the white paper and moved them sideways.

"Eh, I really feel like that......"

The old cat was too lazy to take care of Tang Yue, so it continued to work and deal with the huge data.

These tasks involve difficult orbital dynamics and fluid mechanics, requiring a great amount of calculation, Tang Yue and Mai Dong naturally can't help, the old cat took the computer of Kunlun Station to work hard, the old cat is responsible for giving orders, the workstation is once again full power, all day long, Tang Yue and Mai Dong continue to be responsible for recording the history of human civilization development.

Art history is also a very complex category, and before starting, Tang Yue thought that he was just writing about Leonardo da Vinci's painting of eggs.

But as soon as the information was unfolded, Tang Yue was shocked by the huge volume of this volume, there were dozens or hundreds of genres alone, such as romanticism, realism, impressionism, neo-impressionism, and a lot of unheard of names.

Tang Yue searched his stomach and tried to find the names of a few painters in his mind, and Leonardo da Vinci, Picasso, and Van Gogh took Qi Baishi again, and he couldn't make up five fingers when he was full.

He had to admit that he didn't have any artistic cells.

"I have to compare their open Mach numbers, this one is 11, this one is 177, this one is ...... 157, the dynamic pressure of the parachute opening point is basically in the range of 50 to 750. The old cat spun the pen in his paw and muttered in a low voice, "Then their vertical descent speed is 24, 125, and 80......"

"Quality quality quality quality!"

"Momentum, momentum, momentum, momentum, momentum!"

"Speed!"

"And the density!"

The old cat drank anxiously, his eyes wide.

Data and formulas run in its head.

Although it told Tang Yue and Mai Dong that there was still hope that the latter could use the Orion II spacecraft to land, and they would take Mai Dong off orbit at the cost of abandoning the entire spacecraft, but this was a crazy and bold plan after all, extremely risky, and the slightest carelessness would be a failure.

In the history of human spaceflight, there has never been such an action, and ordinary people will think that it is an exaggeration when they think about it - a spacecraft with a mass of more than 400 tons only lands with thrust reversing re-entry into the atmosphere, this kind of scene has never appeared in science fiction films.

It's no wonder that Tang Yue's first reaction was impossible.

But the old cat's calculations back up the incredible idea, saying that technology is sometimes crazier than anyone else.

This is the hardness of mathematics and physics, no matter how many people think it is impossible, no matter how incredible it seems, as long as they allow it, then it is possible to succeed. The iron railing welded by the universe sometimes pushes you into a corner, and sometimes it is also the safety rope you rely on for survival.

However, the Orion spacecraft is not designed to enter the atmosphere after all, although the preliminary calculations of the old cat can stand, but this is only theoretically feasible, and there are still many steps to go before the theoretical feasibility is actually operated, there are still a lot of calculations and adjustments to be completed, and a lot of problems to be solved.

The old cat said that this is a paper boat crossing the river.

What does Tang Yue mean by asking?

The old cat folded a small boat out of scrap paper and placed it on the table.

You want to cross a wide, fast-flowing river, but there's only a small paper boat available by your side, and the math tells you that this boat can get you to the other side before it leaks and sinks.

But do you dare to go up?

If it weren't for the corner, the old cat would never have taken such a big risk to take this step, Orion II is the paper ship that could sink at any time, theoretically it can safely send Mai Dong to the other side, but as long as there is the slightest wind and waves, it will be in danger of sinking.

"One, two, three, four...... The aerodynamic thermal peak in these four positions will exceed 56/2, hell, what is the outer material of the front of the tank? slv-561？ No, not SLV-561. The old cat shook his head, "Okay, this process is over, and the flow field is calculated." ”

"Hey, I say, old cat, I have a question." Tang Yue put down the blank paper in his hand.

"Say." The old cat twisted the monitor on the left as well.

"If we follow our plan, we can reduce the Orion spacecraft to zero before landing, but it doesn't have landing gear, so it can't land properly, right?" Tang Yue asked, "The Orion spacecraft will definitely crash, and after the fuel runs out, it will fall to the surface, so what about the Eagle spacecraft?" ”

"What do you mean?"

"I mean, how do you get through the last level?" Tang Yue asked, "Even if we can successfully cross the previous 120 kilometers safely, what about the last few tens of meters?" Let's assume that in the best-case scenario, the propellant consumption of the Orion spacecraft is well controlled, and the Orion successfully hovers at a height of one centimeter above the ground, but it is still eighty meters high, which is thirty stories high, and such a height is flat......"

Tang Yue's worries are not unreasonable, although the height of tens of meters is a very small number in aerospace, and it is negligible compared to the 120 kilometers, but for people, it cannot be ignored, the height of a 30-story building, whoever falls down is a dead end.

The purpose of Tang Yue and the old cat is to ensure the safety of Mai Dong, and if Mai Dong cannot land unharmed, all efforts will lose their meaning.

They have worked hard to endure so many difficulties, and they can't be planted on the doorstep.

"I don't need you to remind you of this." The old cat smacked his mouth, "I've thought about it for a long time, the lynx has its own tricks." ”