Chapter 704

There was no accident.

Yang Xiaoman was scolded severely again. Although Xu mang had already tried to persuade him, the effect of persuasion was that Xiaoman was even worse. Almost all Yang's mother staged a plot of "killing the family by righteousness". Fortunately, Yang's father arrived at this time and prevented the tragedy.

Soon, all the people went to work, leaving Xu mang alone in the ward, enjoying the rare quiet. In fact, he had nothing to do. He wanted to stay here for a few days. Although sleeping here would make Xiaoman tired, he could enjoy her gentle care.

Lying on the bed, Xu mangqiao legs, thinking for a long time, finally decided to call Zhang Office of the space agency to tell him about his current situation.

"Hello?"

"Zhang Ju... What... I'm in hospital." Xu mang seriously said: "I want to ask for leave for a period of time. I'm fine. I'm strong. I'm thinking about how to scale the rover according to the requirements of the indicators. I fell into the sewer."

"Yes

"There's no way... I'm the kind of person who's easy to get ahead at work." Xu sighed helplessly and said, "what... Can I not come back? At that time, I will send the information to academician Jin's mailbox of Mars engineering center directly by e-mail? "

"Good!"

"Thank you... Zhang Ju."

PA,

hang up the phone, Xu mang breathed a sigh of relief, and finally finished, giving Xiaoman a surprise in the evening!

"..."

"forget it... She will deliver the meal at noon and tell her." Xu mang shakes up the hospital bed and forms a sitting mode. Then he puts up the shelf for eating in the hospital bed and starts his own work journey to reduce the weight of the Mars rover.

According to the technical standards, the life span of the rover is two Martian years. The Mars revolution cycle is 687 days, that is, the service life is 1374 days. In fact, this figure is not accurate. Xu mang plans to move the time back as much as possible.

Curiosity was designed to last a Martian year, but it's still working, and curiosity landed on Mars seven years ago.

In terms of power, Xu mang directly adopted NASA's multi mission 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 convert the heat generated by plutonium-238 into electricity.

It's almost 14 years old, but Xu's nuclear cell is a little bigger than NASA's, just to allow it to run more devices at the same time.

The rest,

is simply to move the auxiliary equipment to the top and control the weight problem.

All of a sudden, there was a quick knock on the door. Then a middle-aged man came in with a smile that he could not understand. When Xu was confused, a large number of doctors followed him.

"Professor Xu!"

"How are you?" The visitor is the president of this hospital. After hearing from Yang's mother that Xu mang was hospitalized, he quickly called in a large number of elite doctors, and then came to Xu Mang's ward. He would not miss such an excellent opportunity.

"..."

"are you?" "Are you the president of this hospital? Ouch... In fact, I don't have anything. I just scraped a little skin. I don't need to use such an array. I'm a bit of a waste of public resources. "

"No waste!"

"By contrast, if Professor Xu has problems, it will be a waste." Seeing that Xu mang was working, Premier Li frowned and said seriously, "Professor Xu... What you need most is rest, not hard work."

"Oh..."

"can you leave for a while?" Xu mang said with a smile: "if you see and say these materials in my hand, you may be sentenced. The start is five years. If you don't cap it, you will die."

In a moment,

people were all gone. Most people felt that Xu mang was not joking. At his level, it was estimated that all the items were confidential.

"Professor Xu?"

"Do you need to change wards?" President Li did not leave, but stood by the window with his back to Xu Mang and asked, "our hospital has a special cadre ward, which is suitable for medical care. If you need it, I will transfer it to you."

"No...

" I'm just an ordinary person and can't afford to go to the cadre ward. " Xu mang said calmly, "is there anything else for president Li?"

"..."

"then Professor Xu will have a rest and speak directly if you need anything." President Li didn't stay for a long time, so he chose to leave directly. If he was a university professor, he would not be humble. However, his surname was Xu and his single name was mang.

The room was calm again,

got up,Anti lock,

Xu mang continued to alleviate the problem of counterweight on the Mars rover.

In one morning, about 70% of the project was completed, and the remaining 30% were self rescue equipment and sky crane. It's a pity that NASA did not give Xu mang the design drawings of these two key equipment.

According to the information given by academician Jin, they used the thruster of the lander to cushion the surface of Mars, which was similar to the previous plan to land on the moon. However, the distance between the earth and the moon, and the distance from Mars, could hardly be compared.

After thinking about it,

finally, Sky Crane equipment was selected.

According to several pictures on the Internet, Xu mang roughly understood the appearance of the so-called Sky Crane, and thus understood how curiosity landed on Mars. After first entering the atmosphere, he would throw away its heat shield and rear shell with the help of a large parachute to slow down its descent speed.

Then the sky crane is used to slowly lower the height. The sky crane uses the cable to send the rover to the surface of Mars, and finally it flies away...

in a word,

complex!

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

"Hello?"

"Academician Jin... Yes, yes, no problem." Xu mang received a call from academician Jin and said with a smile: "academician Jin, I read your information, and I suddenly come up with a bold landing plan. How about learning NASA's Sky Crane landing method?"

"..."

"too complicated!" Academician Jin said seriously: "in case of any problems, who can bear the responsibility?"

Xu opened his mouth, but found he could not speak. After thinking for a long time, he finally said, "NASA also used this sky crane landing method for the first time, and they succeeded... I think we can too!"

"Take the responsibility Xu mang said solemnly, "I will take charge of it."

For a moment,

the phone was silent.

"Professor Xu..."

"are you sure?" Academician Jin asked, "it takes less than ten minutes from entering the atmosphere to landing. During this period, can you be sure that there is no accident?"

"Yes

Academician Jin falls into conflict. This is not an ordinary thing. It is easy to crash. If you make a mistake or fail to deal with any details properly, it will become a laughing stock all over the world. The media in the western world will not have sympathy for you.

"Xu mang!"

"I hope you can think about it again. If it fails, the western media will not sympathize with you, but will fall into trouble." "You have dealt with them many times, and you should know their routine," said Jin

"I understand... But I think the sky crane landing method is the most reliable way at present. If we use the same method as landing on the moon, the impact force will damage the equipment above."

"Yes."

"The rover I designed was nuclear powered." "It has a multi task radioisotope thermoelectric generator with a design life of 20 years," Xu said with a smile

Hearing Xu Mang's words,

academician Jin was stunned for a moment and asked curiously, "how did you... Master this technology?"

"Hey, hey

"Anyway, I will. Don't ask why... Just don't know." Xu mang said with a smile: "academician Jin... Try it. I promise by my reputation that nothing will happen."

"..."

"I need to discuss with Zhang Bureau and give you a reply tomorrow, OK?" Said academician Jin.

"Oh..."

PA,

hang up.

Xu sighed blankly. He could understand why academician Jin was so cautious. After all, no one can guarantee that there will be any problems in the process of landing. Once it appears, it will be fatal and cause irreparable losses.

"Alas..."

"the pressure is so great!" Xu sighed blankly. He thought that his target was the sea of stars. What would happen if he landed on Mars in the future?

...

space agency,

academician Jin came to Zhang's office and went into the room after a call for admission.

"Well?"

"Lao Jin, why are you here?" Seeing academician Jin, Zhang Ju asked curiously, "is there any problem?"

Academician Jin shook his head and said solemnly, "Xu Mang and I have just made a phone call. He has proposed a very bold and complicated landing method, which uses Sky Crane landing method as NASA does."

"What?"

"Skycrane landing method?" Zhang Bureau Leng for a moment, suddenly between silence, ten seconds later raised his head, asked: "is he sure?""I don't know."

"But... Even if we are sure, who can guarantee that there will be no problem in the short time of less than 10 minutes from the atmosphere to the landing?" Academician Jin sighed: "as long as one detail is not done, it will be disastrous."

Yeah!

In the past few years, all our efforts have gone to nothing, and the investment of 10 billion yuan will be wasted.

What to do?

Generally speaking, Zhang Bureau 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.

"Yes."

"He said he would take all the consequences." Academician Jin said, "Zhang Ju... What do you think?"

For a while,

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

"Since..."

"we have entrusted the mission of Mars rover to him, we must trust him unconditionally." "I agree to adopt his method," Zhang said

......

www.novelhall.com , the fastest update of the webnovel!