"I'll leave the trajectory model to you."
In the supercomputing center, Zhang Xingyang said to Zhao Bingzhi earnestly.
"I will try my best."
After getting a positive answer from the other party, Zhang Xingyang said nothing more, waved his hand and prepared to leave.
He has a lot to do recently and doesn't have much time for politeness.
After understanding their current work progress at the supercomputing center, Zhang Xingyang had completed the mission of this trip to Jiangcheng.
Next, he has other important things to do.
Since the space craze subsided in the 1970s, human exploration plans for the moon and other stars in the solar system have become extremely slow and conservative.
Today, on the eve of the launch of Shenzhou-3, China has begun to discuss plans for lunar exploration.
"I believe that the ultimate goal of our lunar exploration program will be to build a permanent scientific research and production base on the moon."
In a seemingly ordinary room, a meeting that will determine the future fate of the moon is taking place.
"Is this goal too difficult?"
In the back row of the conference room, a middle-aged man with an honest face asked after Zhang Xingyang finished speaking.
"The ultimate goal is actually, in our time plan, it will be completed by 2050."
When he said the next sentence, Zhang Xingyang smiled:
"By that time, it will not be difficult for us to establish a permanent and complete lunar base."
"Just like fifty years ago, we couldn't even imagine that fifty years from now we would be sending astronauts into space."
Zhang Xingyang's confidence made many people present feel relieved.
But not everyone is so concerned about long-term goals.
For them, the first-phase plan and the second-phase plan described by Zhang Xingyang are what attract their attention the most.
It is also the part that is most likely to be realized in their hearts.
"The final goal is too far away, so let's discuss the first-phase plan first."
An energetic old man sitting in the front row said to Zhang Xingyang.
"Explain in detail what this 'circling', 'falling' and 'returning' means."
These three words are the three key actions of the first phase of the lunar exploration plan.
"They respectively correspond to the lunar exploration satellite orbiting the moon, the soft landing of the lunar probe, and the landing of the lunar probe to collect samples and return to the earth."
"The entire first phase of the lunar exploration plan is expected to take ten years to complete the exploration of the lunar surface."
Zhang Xingyang began to explain the specific implementation methods and timetable of the lunar exploration plan to the PPT in the conference room.
"It is expected that in 2004, we will launch the first lunar exploration satellite to test our extraterrestrial satellite flight technology and obtain three-dimensional images of the lunar surface.
In preparation for our second step, the lunar lander will land on the lunar surface and investigate the space environment on the lunar surface. "
"After completing the lunar flight, it is expected that in 2007 we will launch a lunar probe, which will detect the lander's topography, geological structure, etc. through a soft landing with the support of automatic patrol and survey technology.
It also conducts sun-earth-lunar space environment monitoring and lunar-based astronomical observations.
Provide chemical and physical parameters of the lunar surface for future site selection for establishing a lunar base. "
"The third step is to launch a lunar return lander in 2010, which will automatically sample the lunar rock and soil before returning to Earth, and conduct detailed analysis and research on the samples on the Earth."
Zhang Xingyang said it very briefly. In fact, there are a lot of technical details that can be discussed in these three steps.
For example, if we really want to expand on the equipment needed to carry lunar exploration satellites and satellite communications between the earth and the moon, Zhang Xingyang can talk about it for three days and three nights.
Even seemingly simple communication problems can make a bunch of people lose their hair.
You know, the average distance between the earth and the moon is 380,000 kilometers, and even the closest distance is more than 360,000 kilometers.
Under the current level of technology, electromagnetic wave communication is already the fastest communication method known to mankind. After all, its speed is the speed of light, the normal speed limit of the universe.
But even at the speed of light, it takes more than two seconds to travel back and forth between the earth and the moon.
This is unbearable for satellites that pursue high accuracy.
Therefore, this also requires that the lunar landing probe must be able to make independent judgments and adaptively adjust the landing attitude and location.
Otherwise, if the lunar probe waits for instructions from the control center far above the earth before landing, the lunar probe may have deviated a large distance from its intended target.
And that's just considering landing on the near side of the moon.
As we all know, due to tidal locking, one side of the moon faces the earth all year round.
This has also made many people wonder about the far side of the moon.
In their imagination, there is a group of aliens unknown to the public living on the back side of the moon.
These aliens are constantly monitoring various things happening on the earth.
Of course, some people believe that there are actually humans from an era on earth on the back of the moon.
The humans on earth are just species created by them.
"The lunar back side exploration plan is also a very important part of our second step of 'landing'."
“Throughout the ages, I don’t know how many people have had daydreams about the far side of the moon.”
"But only in our time have we been able to actually take a look at the far side of the moon."
"This is our mission and our honor."
When Zhang Xingyang said this, his face showed a very rare enthusiasm.
For him, landing on the back of the moon is a step closer to the era in his memory.
In the 22nd century, human beings' development of the solar system has entered an unprecedented stage.
There are endless development plans for the earth's only satellite, which is also the largest satellite in the entire solar system.
On the front side of the moon are countless scientific research laboratories and helium-3 production centers.
At the end of the 21st century, mankind has completed thermonuclear fusion power generation technology, and helium-3, as a clean, safe and efficient fuel, has suddenly replaced the previous fossil energy and has become the most efficient energy source in human history.
The helium-3 production base built in the many craters on the moon also has the same status in the 22nd century as the high-grade oil fields in the 20th century.
On the far side of the moon, there are countless automatic laser defense stations.
Together with the automatic kinetic energy warhead defense network surrounding the Earth's outer orbit, they form an absolute defense circle for the Earth-Moon system.
Any target with a diameter of more than ten centimeters will be burned into a plume of smoke in the universe by the defense network after being discovered by the space surveillance satellite.
From the day this system was completed, except for human-controlled satellites falling to the earth.
There are no more naturally occurring meteors on Earth.
However, how can the light of natural meteors be as brilliant as those of artificially controlled meteors? !
In the 1970s, there was a meteor shower craze.
At that time, the wedding of young men and women in society required the presence of a meteor shower to be romantic enough.
Just like firecrackers and fireworks are a must at weddings today, it was also a trend to have meteor showers at weddings at that time.
Of course, the underlying reason behind this is also very simple.
Mainly because of the completion of the construction of the space elevator deployed in the equatorial geosynchronous orbit.
The cost of transporting materials from the earth to space is almost as low as that of train freight in the 20th century.
As a result, even firing a pile of metal that emits colorful light when burned has become a hot business.
This is where the brilliant meteor shower comes from.
For people in the 1970s, the price of such a meteor shower was not high. The only difficulty was the launch time and location.
After briefly recalling the future, Zhang Xingyang's thoughts returned to the present.
Nowadays, manned spaceflight has not yet been completed. For me, I still have a long way to go to achieve these goals.
After all, in the minds of people in this era, even an industrial wonder-level building like a space elevator is difficult to imagine.
Therefore, Zhang Xingyang has never disclosed his thoughts in this regard to others.
Although he was able to complete the key technology of the space elevator, the development of high-strength and ultra-long carbon nanotubes.
But for such a space wonder, neither Mao Xiong nor Eagle Sauce may be able to support it when their national power is at its strongest.
The most terrible thing is that the space elevator must be built in the equatorial region.
The current safety environment in the equatorial region is not suitable for the construction of such highly dangerous mega-projects.
In comparison, permanent scientific research stations on the moon are much more reliable.
After all, even the longest-range intercontinental ballistic missile cannot span a distance of more than 300,000 kilometers and attack a target on the moon.
“The lunar back side exploration plan is different from the front side detection plan, because we are hindered by the moon itself, so we cannot achieve direct communication with the back side of the moon.
Therefore, before carrying out the lunar backside exploration plan, we also need to launch a Earth-moon relay communication satellite.
It is used to carry out signal relay work for the detector on the back of the moon. "
Signal problems are also an important reason why it is very difficult to explore the back of the moon.
After all, although the lunar rover can operate according to internally set programs when moving on the lunar surface, it can collect various data on the lunar surface.
But collecting data is not the real goal of the detection plan. Receiving data is what we really need.
If the data is collected but cannot be returned, what is the difference between it and no data being collected?
However, it is also very difficult to relay communication satellites on the far side of the moon. Yingjiang has proposed the development of relay communication satellites several times, but due to technical reasons and financial problems, it has not been done.
Even in the 1920s, although Yingjiang's "Return to the Moon Plan" formulated a plan to land on the back of the moon, due to technological backwardness, it could only rent domestic relay communication satellites on the back of the moon.
"Relaying communication satellites is not easy, right? No country in the world has been able to do it yet."
"Can we handle it?"
In the conference room, someone else raised their own questions.
After all, there is no successful international precedent at this time, so everyone still has a certain degree of doubt about it.
"The difficulty of relaying satellites does exist."
After Zhang Xingyang paused, he slowly explained:
"But the main difficulty is actually the track."
"Because it is necessary to ensure smooth communication between the back of the moon and the ground at the same time, this has high requirements for the orbit."
"However, we have already made preliminary calculations about this. Satellites operating at the Earth-Moon Lagrange L2 point can well ensure communication problems between the earth and the back of the moon."
The Earth-Moon Lagrange L2 point is different from what most people think relay satellites should be between the Earth and the Moon.
It is actually outside the orbit of the earth and the moon. The order of the three is: the earth, the moon, and the relay satellite.
The communication between the three is divided into three links, namely the forward link to the moon, the reverse link to the moon and the data transmission link to the earth.
It respectively ensures the transmission of lunar data, the reception of lunar data and the two-way data transmission between the earth and the earth.
It is precisely because of this that relay satellites can ensure communication between the earth and the back of the moon 24 hours a day.
"In fact, in addition to serving as communication functions, relay satellites can also serve as carriers for many scientific research equipment."
"For example, carrying a low-frequency radio detector can allow us to detect more signals from the depths of the universe."
In fact, because the far side of the moon has less electromagnetic interference from the earth, it can detect more weaker signals.
This cannot be compared with the terrestrial environment. Even in space, although various electromagnetic signals are fewer than in the terrestrial environment, because there are more and more space satellites, the electromagnetic environment has begun to deteriorate a little bit. .
Now, the far side of the moon, which has not yet experienced large-scale development, is undoubtedly a good monitoring environment.
"Xingyang, your plan is good. The lunar exploration program is an important part of our future space exploration. We must complete it."
The old man sitting in the front row first smiled and confirmed Zhang Xingyang's plan.
"When do you think we can achieve our goal of landing on the moon?"
"I think we can land on the moon before 2020 if something unexpected happens."
Four years ago, Zhang Xingyang once told Chen Fang that the moon landing would be achieved within thirty years.
Now, after four years, Zhang Xingyang has compressed time forward by six years.
"Hahaha!"
"You are quite confident!"
The old man laughed a few times and then said:
"I hope to follow your idea and land on the moon before 2020, so that I can still have a chance to see our moon landing heroes."
"Xingyang, what do you think is a good name for our lunar exploration plan?"
The old man didn't think Zhang Xingyang could come up with a very beautiful name, so this was just a casual question.
However, Zhang Xingyang's answer in the next second broke his own thoughts.
"Chang'e Project!"
"In ancient times, Chang'e flew to the moon, but now there are Chinese people landing on the moon!"
Please vote for me, please vote for me! ! !
(End of chapter)
