Old Mao left the crutches to Tang Yue and asked him to make fine adjustments according to Ophiopogon japonicus's height and shape, while Old Mao himself went out to check the 6 field. The Yixi Plain is flat, and the area around Kunlun Station

They are all natural good landing sites. The Mars landing plan has set out five landing sites with Kunlun Station as the center, numbered L1 to L5 respectively. Previous landers and cargo spacecrafts can land directly on the desert beach.

.

The Mars landing plan has been going on for decades. There are already a dozen disposable cargo spacecraft abandoned near Kunlun Station. Three of the five landing sites have been abandoned. Tianzhou 37 is about to land at the L4 landing site.

It is adjacent to the Eagle spacecraft and is located fifty meters in front of Kunlun Station.

"Mr. Cat is out?"

"It's out, it's going to check the landing point of the cargo spacecraft at 6 o'clock." Tang Yue turned around and sat back on the chair, placing the two crutches flat on his knees, "Girl, can you estimate your current height?"

"But I just estimated it last time."

"That was the last lap." Tang Yue emphasized, "The height of the previous lap is different from the current lap. The situation may change in each lap. We need to monitor the orbital height of the Joint Space Station in real time."

"Well... then wait a minute." There was silence on the channel for a few minutes, "It's about 110 kilometers, still at this altitude, nothing has changed."

"Remember that one hundred kilometers is a safe altitude, and eighty kilometers is a dangerous altitude." Tang Yue reminded.

"Mr. Cat said sixty kilometers is a dangerous altitude."

"Sixty kilometers is not a dangerous height, it's a deadline. If it falls to 60 kilometers, you can't save it!" Tang Yue corrected, "You can't let it fall to 60 kilometers under any circumstances."

"But what are we going to do?"

Tang Yue got stuck.

What can we do to keep the joint space station at a safe enough altitude? This is an unsolvable problem. No matter whether eighty kilometers is a dangerous altitude or whether sixty kilometers is a dead line, even if they can detect in advance that the space station is about to crash,

There is no way to save it.

Lao Mao has long told Tang Yue that from the moment the electric rocket runs out of propellant, the fate of the space station is already doomed. This is like the end of the college entrance examination paper has been handed in, no matter what you do before the scores are announced

It may affect the final score. In this case, the best way to deal with it is to cover your head and sleep for ten days and ten nights. After ten days, wake up and the results will be available, which will avoid a long period of tension and suffering.

Both of them fell into silence. After the silence, the girl whispered: "Today is the sixth day."

"Well, today is the sixth day." Tang Yue said.

"It's already the sixth day..." the girl sighed lightly in the channel, "My clock here is broken, I don't know what time it is now, the sun will rise and set in less than an hour... and

,I am starving……"

"How much food do you have left?"

"The last cookie."

"How can you eat so well?"

"I...I...there aren't many biscuits in the space station, so I've saved a lot, okay?" The girl said angrily, "Yesterday was the hardest. I was so hungry that I couldn't sleep at night. I didn't feel anything when I woke up this morning.

My head is a bit dizzy, it may be hypoglycemia...Tang Yue, please pay attention that you are talking to a patient with hypoglycemia."

"so what?"

"So you should speak sweeter!"

·

·

·

"I said Tang Yue."

"Um?"

"Did Mr. Cat say before that the remaining life of the United Space Station may be seven to eleven days?"

"yes."

"Tomorrow is the seventh day."

"Don't worry, nothing will happen tomorrow." Tang Yue comforted her, "Based on the orbital height you estimated before, the orbital descent of the Joint Space Station is slower than we thought. Not only will it be fine tomorrow, but also the day after tomorrow. It may

It will drop below 80 kilometers on the tenth day, but the Tianzhou 37 cargo spacecraft should also arrive at this time. We cannot rescue the space station, but we can rescue you."

"Can I still be rescued after reaching 80 kilometers or less?"

"Okay! Not to mention eighty kilometers, sixty kilometers is fine!" Tang Yue took out a few sheets of draft paper in front of him and spread them out on the table one by one. The papers were densely packed with calculations and numbers.

"I've done the math... The Tianzhou 37 cargo spacecraft has the ability to safely enter the atmosphere. As long as we are bold enough and control it accurately enough, we can do a docking during a high fall!"

"Is this...possible?" The girl was a little surprised.

"Of course it's possible! Of course it's possible! Girl, listen to me, listen to me..."

"Yeah, I listen to you."

"The body strength of the Tianzhou cargo spacecraft is sufficient, and the Crystal core module is the strongest module in the United Space Station. At an altitude of sixty to eighty kilometers - if the atmospheric environment is ideal enough, if the atmospheric environment is ideal enough

, after all, this height is actually less than the normal re-entry height..."

Tang Yue took out his pen and wrote quickly on the manuscript paper. In the past two nights, apart from playing cards, he had been thinking about this problem, racking his brains and writing in large pieces.

Although Maidong couldn't see what Tang Yue wrote on the paper - he copied his calculation process on the paper to increase his confidence. This time he also had rigorous calculations and was no longer shouting empty slogans.

"There is no doubt that the posture of the United Space Station is completely out of control, but the Tianzhou spacecraft is controllable. Our only hope is on the Tianzhou spacecraft! We can maneuver the spacecraft close to the crystal cabin and choose the docking attitude with the nose facing forward... Listen

It's incredible and whimsical, but my calculations support this result. This operation is very difficult, but it is possible. I definitely can't do it, but the old cat should be able to do it."

"We are clear about the data of the Tianzhou spacecraft. In this process, the maximum temperature is only no more than 1oook, and the maximum heat flow density is no more than 3ook/m2, so it will have almost no impact on the spacecraft. According to the usual data, the maximum temperature at this stage is actually

There are only 8ook... We can complete the rescue before the space station falls sixty kilometers away. As long as you cooperate well enough, the whole process will not take more than three minutes."

Tang Yue's writing was so fast that it was almost incoherent, but fortunately the confusion of the order did not affect the expression of meaning.

"The real thermal barrier occurs below an altitude of 40 kilometers, but at this time the Tianzhou spacecraft has rescued you. Then the Tianzhou spacecraft immediately switches to the normal re-entry procedure and enters Mars at an altitude of 40 kilometers.

Atmosphere, the empty United Space Station will burn up in the atmosphere, and the cargo spacecraft can allow you to land safely! The only problem is that the propellant consumption is a bit excessive, so the final 6 degrees of the Tianzhou spacecraft will be relatively large, and it may break.

Fall down."

"Another problem is that doing this may not guarantee that 6 will be accurately located near Kunlun Station, but there are enough supplies in the Tianzhou cargo spacecraft. You can eat and drink there while waiting for rescue with peace of mind."

Tang Yue spit out the entire plan in one breath. After finishing speaking, he took a breath and rested, waiting for Maidong's response.

The girl held her breath.

"You figured this out yourself?"

"Yes."

"Does Mr. Cat know?"

"I haven't had time to tell it yet."

"Tang Yue...you are just a mechanical and electrical engineer."

"What's wrong with the electrical engineer?" Tang Yue said, "I'm telling you, a serious aerospace engineer would definitely not dare to do this! But I do."

"Because doing so may destroy the Tianzhou spacecraft." Maidong said, "The risk is too great."

Tong Tang Yue's idea is indeed unbelievable. He wants the Tianzhou 37 cargo spaceship to dock with the crystal cabin in an extremely unstable situation. The risk is extremely high. If he is not careful, he will lose his wife and lose his troops, and the attempt will be in vain.

.

"But this is the only way to save you, girl." Tang Yue said, "What we focus on is not the risk, but the hope. As long as there is one ten thousandth chance, it is worth investing ten thousand percent.
Chapter completed!