Die on Mars

"Shout!" Tang Yue pointed at the screen, turned around and called Lao Mao.

"Scream? Hasn't the collected works of Lu Xun been sorted out?" Old Mao buried his head in typing on the keyboard, ""Scream" and "Morning Blossoms Plucked at Dusk" have been released, 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 with both hands, widened his eyes and imitated the image of the characters in the painting, "Is this an authentic painting?"

"Are you stupid?" Old Mao buried his head in typing on the keyboard. "The original is in the Hylton Museum in Canada. It disappeared with the earth. Yours is just a scanned photo."

"I asked if it was an authentic photo."

"Identify it yourself," said the old cat. "Look at the painting from all angles and directions. If the characters on the picture are always staring at you, it means it is authentic."

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

"Hey, hey, it's true, the person in the painting is really staring at me... holy shit, he's so creepy."

The old cat sighed.

From all aspects, Tang Yue's IQ is not among the top people in the world. Perhaps his simple brain is also an important reason for his successful survival to this day.

"If you look at any portrait of a character with the eyeballs in the center of the eye sockets, you will feel that it is staring at you. This is your psychological effect and has nothing to do with whether it is genuine or fake." Old Mao picked up the manuscript paper at hand, which was already filled with notes. Densely packed with formulas and numbers, it compared with the data on the display, "Well... the ballistic coefficient does not exceed 100kg/m, and the damping coefficient of this thing at zero angle of attack is 1.86..."

"real?"

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

Tang Yue drew a cat's face on the white paper and a pair of huge eyes. He then stretched out his arms with the white paper spread out and moved it left and right.

"Hey, I really feel like this..."

The old cat was too lazy to talk to Tang Yue anymore. It continued to work, processing complex and huge data.

These tasks involved highly difficult orbital dynamics and fluid mechanics, requiring a huge amount of calculations. Naturally, Tang Yue and Mai Dong were unable to help, so Lao Mao took the computer at the Kunlun Station and worked hard. Responsible for issuing orders, the workstation is once again fully powered, 24/7, and Tang Yue and Maidong continue to be responsible for recording the history of the development of human civilization.

Art history is also a very complex category. Before starting, Tang Yue thought he was just writing about the story of Leonardo da Vinci painting eggs.

But as soon as the information was unfolded, Tang Yue was shocked by the voluminous volume of this volume. There were dozens or hundreds of schools alone, such as romanticism, realism, impressionism, neo-impressionism, and a large number of others. A pile of unheard of names.

Tang Yue searched his mind to find the names of several painters in his mind. Da Vinci, Picasso, Van Gogh, and Qi Baishi, but he couldn't even get them with five fingers.

He had to admit that he had no artistic talent.

"I have to compare their parachute opening Mach numbers. This one is 1.1, this one is 1.77, this one is... 1.57. The dynamic pressure at the parachute opening point is basically in the range of 350 to 750." The old cat rotated the parachute in his paws. Pen murmured in a low voice, "Then their vertical landing speeds are 2.4, 12.5, and 8.0..."

"Quality quality quality quality quality!"

"Momentum momentum momentum momentum momentum!"

"speed!"

"And density!"

The old cat shouted anxiously, his eyes widening.

Data and formulas run through its head.

Although it told Tang Yue and Maidong that there was still hope, the latter could use the Orion 2 spacecraft to land. They took Maidong from orbit at the cost of abandoning the entire spacecraft, but this was ultimately a crazy and bold idea. The risk of planning is extremely high, and if you are not careful, you will fail.

In the history of human spaceflight, there has never been such an action. Ordinary people would think it is an exaggeration to think about it - a spacecraft with a mass of more than 400 tons can land by re-entering the atmosphere through reverse thrust. This kind of scene has only appeared in science fiction. In the film.

No wonder Tang Yue's first reaction was that it was impossible.

But Laomao’s calculations support this 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, success is possible. The welded iron railings of the universe can sometimes push you into desperate situations, but sometimes they can also be the safety rope you rely on to survive.

However, after all, the Orion spacecraft is not designed to enter the atmosphere. Although Laomao's preliminary calculations are tenable, it is only theoretically feasible. There are still many steps to go before practical operation, and there are still a lot of problems. Calculations and adjustments need to be done, and plenty of problems need to be solved.

The old cat said it was a paper boat crossing the river.

Tang Yue asked what did he mean?

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

You want to cross a wide and fast river, but there is only a small paper boat available. Mathematical calculations tell you that this boat can get you to the other side before it leaks and sinks.

But do you dare to go up?

If he hadn't been desperate, Lao Mao would never have taken such a big risk. Orion 2 is the paper boat that may sink at any time. In theory, it can safely send Ophiopogon japonicus to the other side, but as long as there is a chance The slightest bit of wind and waves would put it in danger of sinking.

"One, two, three, four...the aerodynamic heat peaks at these four positions will exceed 56W/cm. Damn it, what is the covering material at the front of the tank? SLV-561? No, it's not SLV-561." The old cat shook his head, "OK, this process is over and the flow field calculation is completed."

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

"Say." Old Mao turned the monitor on the left side over.

"If we follow our plan, we can reduce the speed of the Orion spacecraft to zero before landing, but it has no landing gear and cannot land normally, right?" Tang Yue asked, "The Orion spacecraft will definitely crash. The fuel consumption After it is done, it will fall to the surface, what will happen to the Eagle spacecraft?"

"What do you mean?"

"I mean how to get through the last hurdle?" Tang Yue asked, "Even if we can successfully and safely cross the previous one hundred and twenty kilometers, what about the last few tens of meters? Let's assume the most ideal situation, the Orion spacecraft The propellant consumption is controlled to the extreme. Orion successfully hovers one centimeter above the ground, but it is still 80 meters high. This is thirty stories high. It is a flat shot from such a high altitude. Come down..."

Tang Yue's worries are not unreasonable. Although the height of tens of meters is a very small number in space terms, and it is negligible compared with the 120 kilometers, it cannot be ignored for humans. At a height of thirty stories, anyone who falls will die.

The purpose of Tang Yue and Lao Mao is to ensure the safety of Ophiopogon japonicus. If Ophiopogon japonicus cannot land unharmed, all efforts will be meaningless.

They have worked hard to overcome so many difficulties, and they cannot afford to fail at the last moment.

"You don't need to remind me about this." The old cat smacked his lips, "I have already thought about it. The lynx has its own clever plan."