The total area of ​​insulation tiles that need to be inspected exceeds 20 square meters. Ophiopogon japonicus lacks professional inspection tools. There is no ultrasonic flaw detector or X-ray machine. All she can rely on is her own eyes.

"The ablation is very serious." Maidong stretched out his hand and gently pressed it on the black belly surface. "The surface is very rough and looks a bit like plastic."

"This is a phenolic impregnated carbon ablation material. Its fixative is phenolic, which is Bakelite plastic." Lao Mao explained, "So it is normal to look like plastic. Some car tires are also made of this material."

The Eagle lander experienced friction and burning when it first entered the atmosphere. The high temperature of 2,000 degrees Celsius will cause the heat insulation tiles to evaporate and sublimate, making its ventral surface look far less complete and clean than when it left the factory, like a severely burned

The patient did not have an inch of intact skin all over his body.

If it weren't for Yang Huanchi, his girlfriend's brother who is a supervisor at NASA, and his nephew's seventh uncle said it was okay, Tang Yue himself would have been unsure. The insulating tiles after being burned at high temperatures looked quite miserable, with uneven surfaces and a burnt out state.

, it feels a little rough, and a large area has melted into glass, glowing with a colorful oily sheen.

But fortunately, the success of the Eagle lander does not depend on its appearance.

No matter what it looks like after being burned, as long as enough redundancy is left in the original design, it will definitely be able to withstand re-entry into the atmosphere again.

The super-big arm moved slowly with Ophiopogon japonicus, and through the glass mask, the girl carefully inspected the heat insulation tiles of the lander.

"Those parts that look miserable are irrelevant, they are normal phenomena." Old Mao reminded, "The heat-insulating tiles on the Eagle spacecraft itself take away heat through combustion and sublimation. Miss Maidong, you have to pay attention to this.

It’s the deeper cracks and uneven areas.”

"Are these the cracks and bumpy areas?"

"Yes, cracks may cause stress concentration in extreme environments, causing cracks to expand and the insulation tiles to fall off." Lao Mao looked at the picture and nodded, "The unevenness will lead to uneven heating and cracking of the insulation tiles. In these cases

All may cause accidents.”

"I see."

Maidong took a deep breath and turned on the LED headlights on both sides of the helmet.

"What should I do if there are cracks?" Tang Yue lowered his voice and asked, "Will it be repaired?"

"What can I use to replenish it?" Lao Mao asked, "Do you have 502 glue?"

"No." Tang Yue asked, "Can 502 glue be used to repair this?"

"Obviously not." Old Cat shook his head, "But you don't even have a bottle of 502 glue."

"What...what should I do?"

"There's nothing you can do," said the old cat, "so you'd better hope there aren't any fatal cracks."

Tang Yue was stunned and speechless. He didn't know since when, he had become accustomed to the days when there was always a backup plan. If PlanA didn't work, there was PlanB. If PlanB didn't work, there was PlanC. There was DEFG lining up behind PlanC. They just had to face the ground.

Just say hello, and engineers on the ground will put together a bunch of solutions for you to choose from within twenty minutes.

At that time, I was so blessed that I didn’t know how blessed I was. Now that I think about it, it was a good time for a huge nanny team with thousands of top-notch supporters. I didn’t know how to cherish it at that time, but I regret it now.

It is said that there is no perfect road, but someone has paved the road for you.

When the old cat says there is no way, it means there is really no way. There is no hope at all, and you will hit your head and bleed. These four words are so simple and so cruel.

"No cracks were found." Maidong's voice sounded on the channel, "The insulation tiles are tightly attached, but I saw a protrusion..."

Maidong moved the camera to let Lao Mao and Tang Yue see clearly.

The girl gently pressed the protrusion with her hand. It was an obvious bulge on the flat belly, like a wart on the skin. "This should be because the material has expanded due to heat. Mr. Cat, is this important?"

The old cat stared at the screen and pondered for a moment.

"It's a safety hazard and it's best to eliminate it."

"How to rule it out?" Tang Yue asked.

"The way of heaven is to make up for the excess of damage and make up for the deficiency. If there is less, make up for it. If there is too much, cut it off." The old cat replied, "The way to eliminate it is to remove the excess part. Miss Maidong, the inspection work is temporarily over.

For now, you go back to the space station to rest, and then you can deal with this problem the next time you leave the space station, just like dealing with acne."

"So violent?" Maidong was startled. Girls have a sworn hatred for acne.

"Yes, it is so violent." said the old cat,

"Then what should I do to solve it?" Maidong asked, "Use high temperature to soften it? Or find a way to dismantle it and reinstall it? But there are not many tools in the space station..."

Maidong believes that repairing insulation tiles must be a complex and precise job, and may require a huge set of machine tools, but this condition is obviously not available on the space station.

“What tools should I bring?”

"A file."

·

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·

"Tang Yue, I took these dirty clothes to wash." Old Mao held a pile of clothes, "There is nothing in your pocket, right? If there are any shameful gadgets, take them out quickly."

"No." Tang Yue bent down and got into the Mingguang Armor, and put his hand into the spacesuit, "Take it and wash it."

"It smells of heather." Old Cat picked up a pair of dirty underwear and frowned, "I told you a long time ago, don't always secretly hide under the quilt and watch Lao Zheng's educational films..."

"roll!"

Whether it is the Kunlun station or the space station, washing clothes is a very troublesome problem. Fresh water is a very precious resource and cannot be wasted on unimportant things like washing clothes. According to the previous practice on the ISS, clothes do not need to be washed. Wearing

When they get dirty, they are replaced with new ones. Dirty clothes are stuffed directly into the cargo spacecraft and thrown into the atmosphere to be burned.

This pattern basically continued in the early days of the Mars mission. There were no washing machines in the joint space station. Everyone would bring enough disposable clothes, sealed in bags, all made of soft, deodorizing and antibacterial materials. Underwear should be changed every six days.

Change your coat once a month and throw it into a trash bag when it's worn out.

But as the Mars landing mission continues to lengthen, astronauts need to carry more and more changes of clothes. A team of six people will have to change out 400 pieces of dirty clothes in a year. This is a quite scary number.

, the Orion spacecraft had to make room specifically for clothes.

So later they installed a small washing machine in Kunlun Station.

The size is very small, not much larger than a microwave oven.

Tang Yue doesn't know how it works. There is no need for washing powder. It may use high-temperature water vapor for sterilization and disinfection. However, the recycling efficiency of waste water is not high, so washing clothes is quite a luxury for him - Tang Yue every time

I have accumulated a lot of dirty clothes and finally washed them all at once.

Tang Yue accurately controlled the frequency of washing clothes to achieve the purpose of saving fresh water. He was familiar with this operation. After all, it was a necessary skill for every college-educated boy.

How to take as few showers as possible for as long as possible and keep your body from fermenting as much as possible.

"Be careful, I only have these few pairs of underwear." Tang Yue was dissatisfied with the old cat's rough movements, "If it's broken, there's nothing to replace it with."

"I know, I know, don't worry." The old cat put a helmet on his head and tried to use a long pliers to pinch Tang Yue's underwear from a distance, but his left arm was not very good and he couldn't poke it.

Clamp it up.

"Then I'll go out and move the battery panels."

"Good luck." The old cat was still poking at the underwear on the floor.

·

·

·

An hour and a half later.

"Tang Yue, please don't be angry. Listen to my explanation. Listen to my explanation. I made this hole intentionally. Really, really... This hole is for ventilation, so that Dandan can breathe fresh air...
Chapter completed!