Reborn Tech Scholar

Chapter 409 The location of the moon landing on the far side of the moon
The influence of the quasi-Riemann conjecture academic report continues to ferment, and more and more mathematicians stand up to acknowledge the results of the paper.

For some mathematicians' questions, some of the world's top and world-class mathematicians have explained. After all, although the report will not answer all the questions and doubts in everyone's mind, in fact, many problems are solved by those world's top and world-class mathematicians. In the eyes of experts, it's not a problem, it's just that other people's academic level has not yet reached, so they don't understand it.

However, it is estimated that it will take several months, or even more than a year, to obtain unified recognition from the mathematics community.

Qin Yuanqing had no choice but to hand over the school affairs to Xu Jiayi, and then came to a secret base. He had been to this secret base before, and it was specialized in aerospace engineering research. Aerospace engineering belongs to the top technology, full of technical content, and the world The countries that master sending people to and from space are nothing more than the three countries of the United States, Russia and China, and other countries, not even the European Union.

It is conceivable how powerful Huaxia's secrecy about aerospace engineering is!
This time he came here because of Chang'e-[-]!

The Chang'e project was officially launched in China in 2004 as a lunar exploration project, and it was named "Chang'e Project" after the ancient Chinese legend of Chang'e flying to the moon.The Chang'e project is divided into three stages: "unmanned lunar exploration", "manned lunar landing" and "establishment of a lunar base". On October 2007, 10, "Chang'e-24" was successfully launched into space, which represented that China had taken a substantial step in the stage of "unmanned lunar exploration".

“嫦娥二号”则是在2010年10月1日在西昌卫星发射中心由长征三号丙运载火箭成功发射升空，顺利进入地月转移轨道，嫦娥二号完成了一系列工程和科学目标，获得了分辨率优于10米月球表面三维影像、月球物质成分分布图等资料。2011年4月1日嫦娥二号拓展试验展开，完成进入日地拉格朗日L2点环绕轨道进行深空探测等试验。

As for Chang'e-2020, it was Qin Yuanqing who participated in it before. According to his calculation, Chang'e-[-] is becoming an asteroid in the solar system, orbiting the sun in an elliptical orbit, and is expected to return to the vicinity of the earth around [-], and then undergo a change of orbit. , under the control of the ground control center, finally landed on the NMG grassland.

As for "Chang'e-2013", it is China's first unmanned lunar probe with a soft landing on the moon.The Chang'e-12 probe consists of a lunar soft-landing probe and a lunar surface inspection probe (the lunar rover). On December 2, 14, it was sent into space by the Long March 15B carrier rocket at the China Xichang Satellite Launch Center. On the [-]th of the same month, it successfully landed in the northwest of the lunar Mare Imbrium. Observing the sky, looking at the earth, and measuring the moon" scientific exploration and other scheduled tasks.

"Academician Qin, I have to trouble you to come over during your busy schedule!" Academician Ouyang, chief scientist of the Lunar Exploration Project, shook hands with Qin Yuanqing and said apologetically.

"Academician Ouyang, didn't Chang'e-[-] go very smoothly before, did you encounter any difficulties?" Qin Yuanqing asked curiously.

Chang'e-[-] is actually the backup star of Chang'e-[-], and on the basis of Chang'e-[-], it will further conduct lunar exploration.The main task is to continue the Chang'e-[-] landing on the surface of the moon, continue to conduct deeper and more comprehensive scientific exploration of information on the moon's geology and resources, and improve the moon's archives.

It stands to reason that as long as the mission of Chang'e-[-] is followed, there will be no problems with Chang'e-[-].

In terms of aerospace engineering, Huaxia has always been steady and steady, not greedy for success, even in the face of rumors from the outside world, Huaxia has followed its own steps to develop in an orderly manner, and has achieved great results over the years.

According to Huaxia, Huaxia's aerospace engineering is not a race with any party, nor is it a competition, but Huaxia has a very unique feeling for the starry sky since ancient times, and we are adhering to the tradition to carry out aerospace engineering.There will be no irrational behavior like the Cold War.

After passing the iris authentication, I came to the detector, and some engineers are installing some equipment on the detector.

Academician Ouyang looked at the more than ten-meter-high detector, and said with a smile: "Chang'e-[-] is indeed the backup machine of Chang'e-[-]. The design of the two is almost exactly the same. However, after Chang'e-[-] was launched a few years ago, , successfully landed the lunar probe on the surface of the moon, and released the Yutu lunar rover to conduct lunar rock exploration, successfully completing the mission."

"It stands to reason that the existence of the 'stand-in' of Chang'e-[-] is not very meaningful, but the National Space Administration refuses to dispose of this huge monster that costs hundreds of millions as waste. So after some argumentation, we will It is proposed that it is different from the content of the lunar exploration that Chang'e-[-] is responsible for, that is, Chang'e-[-] landed on the back of the moon!"

The moon is very interesting. One side always faces the earth, which can be observed through a telescope, but the other side is the back of the moon, which cannot be fully seen from the earth.The characteristics of the two hemispheres of the moon are significantly different. There are many huge maria on the front side; the other side has been impacted and has dense craters, and only a small amount, about 2.5% of the area, is covered by sea. The area covered is as high as 31.2%.

Therefore, many astronomers joked that the moon is the peace guard of the earth, protecting the earth and blocking a large number of extraterrestrial meteorites, lest the life on the earth be attacked by aliens, so that there is life on the earth today.

It is undoubtedly much more difficult for Chang'e-[-] to land on the back of the moon than Chang'e-[-] to land directly on the moon.

"It's such a big change. Just in case, for safety's sake, I need to trouble Qin Yuanqing to come and help us plan a soft landing route." Academician Ouyang said: "From the orbit around the moon to the The surface of the moon, this environment, is the core of the entire lunar exploration program, and it is the top priority. Once it fails, it means that hundreds of millions of dollars of investment have been wasted."

Aerospace engineering is an extremely money-consuming thing, and it is not something that ordinary countries can afford. For example, like Chang'e [-], a probe costs hundreds of millions of dollars and contains many advanced technologies.And as long as one of the links goes wrong, the risk will be very high.

Many people accuse aerospace engineering of being a waste of money and people, but they don't know that aerospace engineering seems to burn money and produce little, but in fact its returns are extremely amazing.The return of aerospace engineering does not mean its specific output, but the influence it brings, including social influence, gathering national self-confidence and national pride, promoting scientific progress, and so on.For example, Wu Weiren, the chief designer of the lunar exploration project, said that 1100% of the more than 80 new materials in my country have been developed under the guidance of space technology, and 2000 space technology achievements have been applied to various fields of the national economy, such as satellite communication and navigation. , weather forecast, etc.

根据科学研究，华夏航天产业的直接投入产出比是1:2，而相关产业的辐射可达到1:8~1:14，也就是说在航天领域每投入1元钱就会产生8~14元钱的回报。

Aerospace engineering seems to be very far away from the lives of ordinary people. In fact, it has already flown into the homes of ordinary people and changed our lives. For example, diapers, air-cushion shoes, dehydrated vegetables, etc. Applied to the embodiment of life.

Qin Yuanqing is also very supportive of aerospace engineering.In fact, the School of Astronautics of Shuimu University not only trains students, but also participates in scientific research tasks of aerospace engineering and contributes to China's aerospace engineering.

Shuimu people also participated in various fields of Huaxia Aerospace Engineering.

After learning about the mission and concept of Chang'e-[-], Qin Yuanqing also understood that in fact, Chang'e-[-] is similar to Chang'e-[-], both of which belong to the second step of "circling, landing, and returning" in the lunar exploration project. Chang'e-[-] belongs to the third step, not only needs to land, but also needs to return!

The difference is that the detection instruments used by Chang'e-[-] are more advanced, and the soft landing site is not on the front of the moon, but on the back of the earth.

Qin Yuanqing obtained a set of basic information. Compared with the original, after so many years of lunar exploration, Huaxia has also accumulated a lot of technology and related achievements, and has a better understanding of the earth, the moon, and the relationship between the earth and the moon.

Qin Yuanqing must also follow the probe launch, orbit the earth, jump to the moon, orbit the moon, and land on the moon after landing preparation orbit.

In this process, because the affected force, its own mass, and speed are different, the calculation basis will also change greatly.For example, simply say that after Chang'e-6 enters the landing preparation orbit, it needs to perform a power descent at the perilunar point on the far side of the moon.The entire power descent process will be divided into [-] stages, which are the main deceleration stage, the rapid adjustment stage, the approach stage, the hover stage, the obstacle avoidance stage, and the slow descent stage.

Six stages, that means six different sets of system parameters are required.

It is conceivable that the computational workload involved is simply unimaginable.

Moreover, the other personnel can only learn about this matter, and cannot help Qin Yuanqing much. The entire calculation workload, including modeling, has to be done by Qin Yuanqing.

As far as this calculation is concerned, many of the existing knowledge in the field of aerospace and mathematics do not exist at all, and are blank. Qin Yuanqing needs to create it. Instead of teaching it bit by bit, it is better to do it yourself.

After it is done, other people will research, analyze, and learn based on the results.

Qin Yuanqing also didn't have the time to be a teacher and spend months or even years teaching this large group of students.

The result is that Qin Yuanqing is like a workaholic. What he does, there are a large number of highly educated researchers in the Lunar Exploration Project. Ph. Yes, seeing Qin Yuanqing constantly drawing ghost symbols on the draft paper, they were confused.

(End of this chapter)