The upgraded ventral surface of the Eagle lander is covered with a layer of thermal insulation - this is actually part of the lander's complete thermal insulation tile.

The complete Eagle lander is a round lift body configuration, divided into two lower stages, and the wing-body fusion design. It re-enters the atmosphere with its belly facing down, and at its highest temperatures it can soar to 2,000 degrees Celsius in some parts, and ordinary materials will undoubtedly not be able to withstand such high temperatures.

The engineers used carbon fiber-reinforced silicon carbide to resist the heat, while the belly was covered with phenolic-impregnated carbon-ablated insulation tiles, which quickly sublimated at high temperatures when the Eagle spacecraft entered the atmosphere, to take away the heat.

"The ship capsized."

"It's capsized again."

"It's capsized."

"Flip and flip your uncle——!"

As soon as Tang Yue entered the door, he heard the old cat howl like a wild dog.

"What's wrong?" Tang Yue unloaded the life support system and hung it on the wall to charge.

"The forty-second capsizing." The old cat sullenly squeezed out a few words from between his teeth, the computer monitor in front of it scrolled with a large number of numbers and function images, Tang Yue came out of the bright light armor, walked closer and glanced at it, dizzy.

"Capsized?" Tang Yue didn't understand what this meant, "What capsized?" ”

"Eagle lander." The old cat sat up straight, "I let the workstation simulate the re-entry of the Eagle spacecraft forty-two times, and each time it capsizes. ”

"Why?"

"Because it's not stable at all, don't forget that we only have half an Eagle ship in our hands." "It's not complete, the weight, center of gravity and aerodynamics are very different from the full version of the Eagle spacecraft, and I tried to throw it off a three-hundred-kilometer orbit, and guess what happens?" ”

"What will happen?"

"In the first sixty seconds, it landed in a belly-down attitude, began to deflect course at the sixty-first second, began to roll at the sixty-fifth second, and entered the roll at the seventieth second." The old cat held a pen in his paw and demonstrated for Tang Yue, "Then the Eagle spacecraft began to perform space gymnastics, a continuous super loop...... It is expected that the final fragments of it should be scattered over a rectangular area of 800 square kilometers. ”

"It's still the best outcome." The old cat added, "There were a few times when I started somersaults from the thirtieth second." ”

"Is there any way to control it?"

Tang Yue knew that attitude was the key when re-entering the atmosphere, the Eagle lander was not a ball, and its whole body was coated with ablative materials, except for the nose and ventral surface that directly met the air flow, its back and tail were not resistant to high temperatures, and once it lost control and fell into a roll when entering the atmosphere, then the spacecraft would be burned by high temperatures.

"I haven't found any way for the time being, the full version of the Eagle spacecraft relies on the engine and the wing surface to stabilize the attitude, and the first 90 percent of the process is adjusted by the engine, and after the altitude is reduced to 10,000 meters, the dynamic pressure of the wing is large enough, and then the aerodynamic wing surface takes over." The old cat said, "We don't have any half of the shell in our hands." ”

Tang Yue poured a glass of water and began to lick it little by little, like a licking dog.

"Can the Eagle's computer help?"

"I'm modifying the program." "After all, the Earth never thought that someone would use a scrapped lander to re-enter the atmosphere, so the third brother programmers did not design this kind of process...... But only the computer is useless, to control the attitude, we need real 'force', either aerodynamic, or rocket thrust, and Mr. Neumann has to work together with Lord Niu to achieve the goal. ”

"Can we build our own wings from existing materials?"

"You're Iron Man?" The old cat said, "The Marvel Universe is not under the control of the Lord, and you are not under the control of the Lord?" ”

"Just talking." Tang Yue kept his head and licked the water.

The full version of the Eagle spacecraft has perfect deceleration measures for re-entry, with inflatable pneumatic reducers, a large ring parasail, and a descending Raptor rocket, which is enough to slow down at speeds of up to five kilometers per second to zero.

But these things are all abandoned after the first landing.

Tang Yue's old cat hand had nothing but a shell with half a brick pasted on it, no reducer, no parachute, and no engine.

It's obviously unrealistic to do it yourself, and characters like Tony Stark only exist in movies.

Putting together a worn, flyable, fire-breathing armor out of a scrap metal pile in the desert is more magic than technology.

"Will the Orion engine come in handy?"

"Orion's engine?" The old cat frowned, "How do you use that thing?" ”

"Think of a way to mount the Orion engine in the lander and use it to slow it down."

"Iron Man again?" The old cat rolled his eyes, "Do you think you build a spaceship with building blocks?" You asked Mai Donna to carry a wrench in her hand to dismantle the engine? The nozzle is thick with her, you are an engineer anyway, can you speak professionally? ”

"I'm just an electrical engineer, not an aerospace engineer."

Tang Yue was also forced to have no choice, no matter how nonsense he was, he dared to come up with an argument, there was a reed that should be a life-saving straw in his hand, and others still pinned their hopes on the gods and Buddhas when they were desperate, what was so strange about him pinning his hopes on the Orion engine.

"The problem is that we don't have any other power system except for the Orion engine, even if there is a little hope, it's worth a try, but it's really forcing the dog to jump over the wall, what's the impossibility of taking a wrench to dismantle the engine?"

"I'm afraid the engine is welded to death, how can you remove it with a wrench?" The old cat shook his head and sighed, "If you want acetylene, too...... It's really a sin, what the hell is this world, a botanist who made a little girl a good girl, forced to become a fitter, an electrician, a stevedore, a pipeman, an instrumenter, a repairman, and now he wants people to dismantle the spaceship, do you know the difficulty and workload? Do you know that you are letting her go alone to dismantle the frigate with her bare hands? Won't your conscience hurt if you squeeze her labor so much? ”

The old cat chattered as he pulled up the structural diagram of the Orion spaceship.

Long-winded, but what Tang Yue said may not be unreasonable, if he wasn't in a desperate situation, he wouldn't have proposed such a nonsense plan, there are cliffs all around, and the Orion engine is the only way, it may be a way of life or a way of death, although it is not clear what is ahead, but it is worth trying.

You may still have a 1 in 10,000 success rate.

Not going to go must be a 100% failure.

The monitor on the other side finished the calculation, and the old cat glanced at the screen, "Yes, the forty-third time also capsized, this time the lander performed well, and lasted for fifty-nine seconds." ”

"Mr. Cat, Tang Yue." Mai Dong appeared in full armor at the communication system, pushing the mask, "I'm ready, ready to get out of the cabin." ”

“OK！” The old cat turned around, "Miss Mai Dong, you inhale oxygen for a while, I'm calling the super big arm...... Remember, don't force it all to be checked all at once, the total area of the Eagle spacecraft's thermal insulation tiles is quite large, and you have an hour and a half of extravehicular activities. ”

"Understood."

"Stay safe, girl." Tang Yue gave a thumbs up.

Mai Dong was stunned, pursed his lips and smiled, and also gave a thumbs up.