I Don’t Want to Win Lying Down

Nothing unexpected,

Yang Xiaoman was scolded again. Although Xu Mang had persuaded him, the effect of the persuasion was that Xiaoman was even worse. Mother Yang almost staged a scene of righteous killing of relatives. Fortunately, Father Yang came at this time. It prevented the tragedy from happening.

soon,

Everyone went to work, leaving Xu Mang alone in the ward, enjoying the rare quietness. In fact, he had nothing to do. He just wanted to stay here for a few days, although sleeping here would make Xiaoman physically and mentally. Tired, but can enjoy her gentle care.

Lying on the bed, Xu Mang leaned Erlang's legs up, thinking for a long time, and finally decided to call Zhang Ju of the Space Agency to tell him about his current situation.

"Hey?"

"Zhang Ju...then what...I'm in the hospital." Xu Mang said seriously: "I have to take time off for a while, nothing is okay...I'm still in a tough body, just walking thinking about how to carry out the rover according to the indicators. Scaling, I was so engrossed, I fell into the sewer."

"Yes!"

"No way...I'm the kind of person who is easy to get ahead at work." Xu Mang sighed and said helplessly: "Then what...Can I not come back? The way I will email the information? , Directly delivered to the academician Jin mailbox of the Mars Engineering Center?"

"it is good!"

"Thank you... Zhang Ju."

Snapped,

Hanging up the phone, Xu Mang breathed a sigh of relief, and finally got it done, and gave Xiaoman a surprise at night!

"..."

"Forget it... she will deliver food at noon and tell her." Xu Mang shook the hospital bed into a sitting mode, and then set up the bed for eating and started his work journey. Reduce the weight of the rover.

According to technical standards, the lifespan of a Mars rover is two Martian years, and the Mars revolution period is 687 days, which means that the service life is 1,374 days. In fact, this number is not accurate. Xu Mang intends to try his best. Move the time back.

Curiosity was designed to last for one Martian year, but he is still working today, and Curiosity only landed on Mars seven years ago.

In terms of power, Xu Mang directly used NASA’s multi-task radioisotope thermoelectric generator, which is actually a nuclear battery, a heat source filled with plutonium-238 dioxide and a set of solid thermocouples, which can generate plutonium-238 Heat energy is converted into electricity.

It has been used for almost fourteen years, but Xu Mang’s nuclear battery is slightly larger than NASA in order to allow it to run more devices at the same time.

leftover,

Simply move the accessory equipment to the top while controlling the weight problem.

Bang bang bang,

suddenly,

There was a rapid knock on the door, and then a middle-aged man walked in, with a faint smile. Just when Xu Mang felt confused, the stranger was followed by a lot of doctors.

"Professor Xu!"

"Is your health okay?" The person who came was the dean of this hospital. When he heard that Mr. Yang said that Xu Mang was hospitalized, he hurriedly gathered a large number of elite doctors and then came to Xu Mang's ward. He would not miss this time. Great opportunity.

"..."

"You are?" Xu Mang asked with a confused look: "Are you the dean of this hospital? Oh... Actually, I have nothing to do, I just scratched my skin a bit, so I don’t need to use such a battle. There is a little waste of public resources."

"No waste!"

"In contrast, if there is a problem with Professor Xu, it is a waste." Dean Li frowned when he saw Xu Mang at work, and said seriously: "Professor Xu...what you need most now is Take a break instead of working hard."

"Oh..."

"By the way, can you leave for a while?" Xu Mang said with a smile, "If you read the information in my hand and say it, you may be sentenced. The starting point is five years, and the top is not capped...seriously. If you do, it will be dead."

moment,

Everyone is gone. Most people think Xu Mang is not joking. At his level, it is estimated that he has all classified projects.

"Professor Xu?"

"Do you need to change the ward?" Dean Li did not leave, but stood by the window with his back facing Xu Mang and asked: "Our hospital has a special ward for cadres, which is suitable for recuperating and living. If you need it, I Transfer it to you."

"No..."

"I'm just an ordinary person and can't afford to go to that kind of cadre ward." Xu Mang said indifferently: "Is there anything else Dean Li?"

"..."

"Then Professor Xu rest slowly. If there is any need, speak directly." Dean Li didn't stay long, so he chose to leave. If he is a pure university professor, he wouldn't be low-pitched, but this person's surname is Xu, Shan Name mang word.

The room was calm again,

Got up,

Anti-lock,

Xu Mang continued to alleviate the problem of counterweights on the rover.

In one morning, about 70% was completed, and the remaining 30% were self-rescue equipment and sky cranes. Unfortunately... NASA did not give Xu Mang the design plans for these two key equipment. .

According to the information given by Academician Jin, they used the reverse thrust engine buffer of the lander and slowly rewarded them on the surface of Mars. This is similar to the previous moon landing plan, but how far is the earth to the moon and how far is it from Mars, The two cannot be compared at all.

Thinking about going,

In the end, Sky Crane Equipment was chosen.

According to several pictures on the Internet, Xu Mang got a rough idea of ​​what the so-called sky crane looks like, and thus understands how Curiosity landed on Mars. After first entering the atmosphere, it will use a large parachute to hold its heat shield and rear shell. Throw it away to slow down the decline.

Then use the sky crane to slowly descend. The sky crane uses the cable to send the rover to the surface of Mars, and finally it flies away...

In short,

complex!

But this is a guarantee for the equipment, and there is hardly any impact force from landing to damage the equipment on the car body.

"Hey?"

"Academician Jin...Yes, yes, it doesn't matter." Xu Mang received a call from Academician Jin and said with a smile: "Speaking of Academician Jin, I read your information and suddenly I came up with a bold landing plan. How about learning NASA's sky crane landing method?"

"..."

"Too complicated!" Academician Jin said seriously: "If something goes wrong, who can bear this responsibility?"

Xu Mang opened his mouth, but found that he could not speak. After thinking for a long time, he finally said: "NASA is also the first time to use this sky crane landing method. They succeeded... I think we can too!"

"I'll take this responsibility!" Xu Mang said solemnly: "I'll be responsible!"

In an instant,

The phone was silent.

"Professor Xu..."

"Are you sure?" Academician Jin asked: "It takes less than ten minutes from entering the atmosphere to landing. Can you be sure that there are no accidents in this period of time?"

"can!"

Academician Jin is in conflict. This is not a common opinion. It is easy to crash. If you accidentally make a mistake or fail to deal with any details, it will become the laughing stock of the world, and the media in the Western world will not cause you to Sympathy.

"Xu Mang!"

"I hope you can think about it again. If you fail, the Western media will not sympathize with you, but will fall into the trap." Academician Jin said: "You have dealt with them many times, and you should know their routines."

Xu Mang smiled and said indifferently: "I understand...but I think the sky crane landing method is the most reliable method at present. If the method of landing on the moon is used, the impact force will cause damage to the equipment above."

"correct."

"The Mars rover I designed is nuclear-powered." Xu Mang smiled: "There is a multi-mission radioisotope thermoelectric generator on it, with a design service life of 20 years."

Hearing Xu Mang's words,

Academician Jin froze for a moment, and asked curiously: "You...how did you master this technique?"

"Hey!"

"In short, I will, don't ask why...just don't know." Xu Mang smiled and said, "Academician Jin...try it. I promise with my reputation that nothing will happen."

"..."

"I need to discuss with Zhang Ju. How about giving you an answer tomorrow?" Academician Jin said.

"Oh..."

Snapped,

hang up.

Xu Mang sighed. He can understand why Academician Jin is so cautious. After all, no one can guarantee that there will be problems during the landing process. Once it occurs... it will be fatal and cause irreparable losses. .

"Ugh..."

"It's stressful!" Xu Mang sighed, thinking that his goal is the stars and the sea. This is the only thing that is landing on Mars. What should I do if I land on more distant stars in the future?

...

Space agency,

Academician Jin came to Zhang Ju's office, and after an invitation, walked into the room.

"Ok?"

"Lao Jin, why are you here?" Zhang Ju saw Academician Jin and asked curiously: "Did you encounter any problems?"

Academician Jin shook his head and said solemnly: "Just now Xu Mang had a phone call with me, and he proposed a very bold and complicated landing method, using the sky crane landing method like NASA."

"what?"

"How to land with a sky crane?" Zhang Ju was stunned for a moment, and was silent for a moment. After ten seconds or so, he raised his head and asked, "Is he sure?"

"I do not know."

"But... even if you are sure, from the atmosphere to the landing, in this short time of less than ten minutes, who can guarantee that there will be no problems?" Academician Jin sighed: "As long as one detail is not done, it will be catastrophic. s consequence."

Yes!

In the past few years, all the hard work has been wiped out, and the investment of tens of billions has also been wiped out.

How to do it?

Generally speaking, ~www.readwn.com~ Zhang Ju will not agree with the so-called sky crane landing method, but if Xu Mang is the proponent of this plan, it needs to be considered carefully.

"correct."

"He said he would bear all the consequences." Academician Jin said: "Zhang Ju...what do you think?"

For a while,

Zhang Ju didn't know what to do. This decision was too difficult to choose.

"since..."

"We handed over the task of the rover to him, so we must trust him unconditionally." Zhang Ju said, "I agree to use his method."

......

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