Rebirth of science and technology academic master

Finally, after a long high-speed flight, the 'Chang'e 2' spacecraft finally reached the predetermined braking point. The reverse force of the plasma engine was seen, providing a reaction force to the 'Chang'e 2' spacecraft, causing the 'Chang'e 2' spacecraft to stop. The spacecraft began to slow down.

The mass of the moon is much smaller than that of the earth, so the first cosmic velocity of the moon is much smaller than the first cosmic velocity of the earth. In order for the aircraft to be captured by the moon, it must reach the first cosmic velocity of the moon before it can be captured by the moon. , entering lunar orbit.

Otherwise, if the speed is too high, the aircraft will be thrown off the moon and never enter the lunar orbit. This can be seen from the circular motion.

As the plasma engine continues to provide reverse force, the 'Chang'e 2' spacecraft continues to decelerate, and the Earth-Moon Monitoring System continuously monitors the speed and trajectory of the 'Chang'e 2' spacecraft, thereby transmitting it back to the earth for ground command. center.

Braking is related to the success or failure of the Chang'e 2 spacecraft, and it can be said to be a key node.

The ground command center is keeping an eye on the Chang'e 2 spacecraft and is in constant contact with the astronauts.

"The spacecraft is in normal condition and is currently decelerating. It is expected that it will slow down to the moon's second cosmic speed of 2.38km/s in 1.5 hours and enter the lunar orbit. After 2 hours, the spacecraft will complete the orbit change and reduce its speed to the moon's first cosmic speed of 1.68. km/s, make a circular motion around the moon!" The commander of the Chang'e 2 spacecraft reported.

At this time, the speed of the 'Chang'e 2' spacecraft reached an astonishing 14km/s, and then reduced the speed from 14km/s to 2.38km/s within 1.5 hours. If it had not dropped to this range, 'Chang'e 2' would have The spacecraft will pass by the moon and will not be captured by the moon. It will have to readjust its direction and angle to correct its orbit and direction.

And this is undoubtedly very time-consuming.

Therefore, it is not easy to land a man on the moon. Every link requires precise control of the spacecraft. Any error in any link may cause the entire manned moon landing project to fall short.

"In three minutes, the 'Chang'e 2' spacecraft will switch from the Earth-Moon Migration Orbit to the Moon Orbit!" Liu Yang reported the speed of the spacecraft against the time.

As the 'Chang'e 2' spacecraft reached a predetermined speed at a predetermined position, it was immediately captured by the moon's gravity, thus entering the lunar orbit. Although it was not moving in a circular motion, it was in the lunar orbit. The next step was to continuously decelerate. Keep changing tracks.

"Beijing, Beijing, the Chang'e 2 spacecraft is currently in synchronous orbit of the moon!" Commander Liu Yang reported the situation to the Earth Ground Command Center.

"The lunar module will separate in 15 minutes!" the ground command center issued an instruction.

"receive!"

At the same time, in the command module of the 'Chang'e 2' spacecraft, Liu Yang ordered the other five astronauts to enter the lunar module. As commander, she will stay in the command module. This is a tradition left over from the 'Chang'e' spacecraft.

But this time, the Chang'e 2 spacecraft is different. The lunar module will travel to and from space and the lunar surface many times, and carry out multiple missions. Therefore, as commander, Liu Yang will also have the opportunity to set foot on the lunar surface again.

"The lunar module separates!" When the time comes, the lunar module will separate from the command module according to the set procedure. Next, the lunar module will begin to land on the lunar surface. There is no doubt that it will take more time than the spacecraft landing on the earth. After experiencing the atmosphere and terrifying gravity, it is much easier for the lunar module to land on the lunar surface. The real difficulty lies in whether the lunar module can land accurately and steadily to the set landing point.

This time the lunar module landed on the lunar surface without any accidents. It landed steadily at the set landing point. It was only 500 meters away from the life module and the Moon Rabbit rover that were launched last time. It was very impressive. Accurate.

At this time, the ground command center burst into warm applause when they saw the scene at the landing point. They knew that the Chang'e 2 spacecraft had been successful once they got here. Even if there was any accident, the astronauts could live on their own for more than one day. months time.

One month is enough for CNSA to launch another manned spacecraft for rescue.

As astronauts stepped out of the lunar module one after another, they continued to celebrate in various ways, once again setting off the 'lunar landing style'. At this moment, countless people couldn't help but imitate it, and it also made people watch. The distinctive personalities of this group of astronauts born around 2000.

Wang Yaping was the last astronaut to step out of the lunar module. This was her second time on the lunar surface, and she became the first female astronaut in the world to step on the lunar surface twice.

At this time, as the astronauts walked out of the lunar module, the ground command center on the earth burst into warm applause, celebrating China's second successful landing of astronauts on the lunar surface, which was a major pioneering feat.

Compared with the Apollo program, the 'Chang'e' spacecraft and the 'Chang'e 2' spacecraft both carried six astronauts. The number at a single time far exceeded the Apollo program. The entire Apollo program had six manned lunar landings, that is, 12 astronauts were sent to the lunar surface, and now China's two manned lunar landings have tied this record.

Even if the Apollo project is true, then China's manned moon landing is only a quantitative difference from the Apollo project. As for the quality, it is far superior.

The astronauts began to test drive the Moon Rabbit vehicles. These Moon Rabbit vehicles require authorization from the ground command center, otherwise they will not be started at all.

Then, people on earth who were watching the live broadcast saw astronauts driving the Moon Rabbit Car on the surface of the moon. Although the Moon Rabbit Car was not fast and was far inferior to cars on Earth, there was no doubt that it was on the moon. An important tool for operations on the moon.

An hour later, the live broadcast entered the commentary and advertising time, and the astronauts began to activate the life capsule, build and install various equipment, which they had practiced many times at the Earth Training Center.

Wang Yaping, as the deputy commander of the Chang'e 2 spacecraft, opened the door of the life capsule.

Five hours later, Wang Yaping will conduct an online lunar class here, telling everyone about the manned lunar landing project and the situation of the moon. This will help people understand the moon more intuitively and clearly, and understand that the moon is a great treasure. It can provide a large amount of resources for mankind and is the bridgehead for mankind to step out of the earth, the cradle of life, and enter the universe.

As an astronaut, in a sense, he was at the forefront of the times. Wang Yaping even came into contact with some confidential things and knew that developing the moon would be the general trend.

For example, what they will install next is helium-3 mining equipment. The mining equipment is modular and only needs to be set up, and it will naturally mine automatically. Then the helium-3 mined will be collected and brought back to the earth before they leave the moon, including 1 The same is true at the No. 1 scientific research station.

"Dear students, I am now giving a lecture to you at my country's No. 2 Scientific Research Station." When the time came, Wang Yaping gave a lecture on the moon on time.

As the first astronaut to give lectures in space, many students engaged in aerospace engineering or became astronauts because of Wang Yaping's special course.

"It's so awesome. Just a few hours after landing on the moon, a scientific research station was successfully established. In this way, our country will have two lunar scientific research stations and take the lead in lunar exploration."

"Looking inside the scientific research station, there are everything you need. I even saw a lot of tomatoes and white radishes. Sure enough, we are going to open up fertile fields on the moon and grow food and vegetables to provide for the needs of the earth. .”

"It turns out that the moon has so many resources, even more rare earth reserves than the earth. A lunar crater is an extraterrestrial meteorite impact. Each lunar crater is a vein of minerals that can be mined and refined for gold, platinum, etc. Dear fellow Taoists , I want to do a crowdfunding project to mine on the moon, it must be very profitable!”

"I want to go to the moon and build a moon palace so that tourists can go to the moon palace and look at the beautiful earth. That is the real heaven and earth!"

"It is said that Fairy Chang'e, Fairy Chang'e, is the most beautiful woman in the fairy world. It's a pity that Fairy Chang'e has not been found after landing on the moon and looking around every corner of the moon. Otherwise, she must have been very good at bringing her back to Earth."

"."

Compared with the various positive and negative comments about China, far away in the NASA conference room on the other side of the Pacific Ocean, hundreds of people were in the conference room at this time, their faces were heavy. No one had thought that China would make its second manned moon landing. The 'Chang'e 2' spacecraft went so smoothly, with no trouble at all.

Look at the Chinese people, they built a scientific research station in a few hours. With this scientific research station, Chinese astronauts can stay on the moon for a longer time.

With a scientific research station, China's exploration of the moon will be in front of everyone!

No one even knows whether missiles can be launched at that scientific research station? In that case, even the most advanced missile defense system in the entire world will not be able to defend it.

"Damn, they are really pressing forward step by step, without giving us any time to breathe!" A middle-aged man cursed in a low voice.

China has succeeded in its second manned lunar landing. Even though NASA has successfully completed a manned lunar landing before, it still feels a lot of pressure.

After all, the image NASA has always established externally is that of a leader in the world's aerospace field, leading the development of the world's aerospace, and even being able to rewrite the Soviet Union's aerospace contributions in the 20th century. But now, the outlined aerospace dominance has collapsed.

However, aerospace technology is real and cannot be faked at all. It relies on hard power! As for the United States, the last space accident has not yet recovered, and the problem has not yet been discovered.

Although NASA has always claimed that it will carry out a manned landing on Mars in 2030, but by then the blond old man has walked away, then the manned landing on Mars may be delayed again and again.

At least for now, NASA doesn’t speculate much about its own manned mission to Mars. Those who speculate about colonizing Mars are private aerospace companies such as Space , as for whether it is really manned to Mars, this is not very important to the super rich at all.