Text | Lin groaned softly
Edit | Lin groaned softly
In 2022, the Chinese astronauts' "Tiangong Teaching" was also questioned for fraud, and the doubts not only did not become obstacles, but encouraged the continuous development of China's aerospace, so that the return of Shenzhou 17 is now 19.5 hours shorter than that of Shenzhou 12.
When will Shenzhou 17 return, and how much has technology improved compared to Shenzhou 12?
Source: Guangzhou Daily 2024-04-30 "It is expected to return at 5 o'clock this afternoon!
Shenzhou's dream comes true
In 1956, China, with a GDP of just over 100 billion yuan, decided to develop the aerospace industry like the United States and the Soviet Union when solving the problem of the quality of life of the people of the whole country.
In 2021, Shenzhou 12 and Shenzhou 13 will be launched one after another, and the astronauts of Shenzhou 13, Wang Yaping, Zhai Zhigang, and Ye Guangfu, will go to space.
However, after the picture of this space lecture was transmitted to the Internet, the Internet questioned the fraud of China's space station, which attracted a domineering response from the Chinese official, saying that China's aerospace has been questioned and has long been concerned.
Source: Global Times2022-06-30 "The Internet Questioned the Fraud of China's Space Station, and the Official Response Lit Up"
They not only responded to the questions from the Internet, but also predicted in advance that the Shenzhou 14 spacecraft would also carry out the "Tiangong Classroom" activity, which would bring more surprises than the Shenzhou 13.
The questioning and official response on the Internet have aroused discussion among mainland netizens, and most netizens feel that the doubts from the outside world are not important, and we just need to bury our heads in development.
China Airlines has also lived up to the expectations of netizens, constantly improving its core technology, and has been able to gradually shorten the time for the spacecraft to return to Earth.
Shenzhou-12 returned to Earth from space, flying more than a dozen times around the Earth before flying to the landing site to welcome them back, taking a total of 28.5 hours, 19.5 hours more than Shenzhou-17.
The time for the spacecraft to fly to the landing site was about an hour and a half, and the Shenzhou 17, which landed at 5 p.m. today, took about the same time as Shenzhou 12 on this step.
The difference between the two is mainly in the link of flying around the Earth, because the continental space station and the Earth are both rotating, which adds some difficulty for the spacecraft to return to the landing site.
If the spacecraft wants to return to the landing site, it needs to determine the angle at which the Earth rotates, the latitude of the Earth they want to reach, and so on.
In the case of limited continental technology, the spacecraft has to follow the earth several times before finding the right angle and latitude, and the more circles they make, the more they can ensure that they can return to the specific position of the predetermined landing site.
However, the large number of circles of the spacecraft means that the astronauts inside the spacecraft have to bear more pressure, and they often have to endure the challenge of overload of several gigabytes, which is equivalent to bearing several times the weight of their own bodies.
When they are being trained, the training project is to be trained in the machine for 8 G overload, and in order to ensure their safety, the staff has set up a stop button at their hand.
This allows them to stop training at any time when they are unwell and try to keep their bodies from harming as much as possible.
However, the astronauts who participated in the overload training on the mainland clearly felt that their body organs were displaced, and they were able to persist from beginning to end, and never pressed the button to stop the machine.
The second-generation astronauts on the mainland once shared their overload training experience, saying that when they received training, they obviously didn't cry, but I don't know why, the tears still stayed.
Ye Guangfu, Li Guangsu, and Li Cong, the third-generation astronauts of the mainland, have also received such training, and they can all persist until the end, and they have also been selected as Shenzhou 18 astronauts with their excellent comprehensive ability.
After Shenzhou 18 flew into space, it means that Shenzhou 17 will return, this spacecraft has applied the mainland's latest upgraded return technology, only need to fly around the earth 5 times to return, Shenzhou 17 has successfully landed.
Source: Xinhua News Agency2024-04-30 "Xinhua News Agency News|Shenzhou 17 Successfully Landed"
These five orbits around the Earth take 7.5 hours, plus the spacecraft from flying parallel to the Earth to the Earth's Dongfeng landing site, it takes about 9 hours in total.
At the same time as Shenzhou 17 returns, the three astronauts who have been on a business trip in space for more than half a year will also return, and the astronauts who replaced them on a business trip in space have become the three astronauts of Shenzhou 18.
Whether it is Yang Hongbo, Tang Shengjie, Jiang Xinlin, or Ye Guangfu, Li Cong, and Li Guangsu, who can come back today, they are all very good, and this is inseparable from the strong backing of the motherland.
The rise of great powers
In order to ensure the safe return of the Shenzhou-17 spacecraft and astronauts, the mainland has already deployed staff, helicopters, and air units at the Dongfeng landing site to facilitate the resolution of emergencies at any time.
Before Shenzhou 17 officially landed, the staff had to consider whether the spacecraft would deviate when landing.
Because the spacecraft's flight will also be affected by the wind, it may not fully reach the expected landing site, and the exact place where the spacecraft will offset is a very serious question.
The mainland has long taken these uncertainties into account and sent people to understand the environment around the Dongfeng landing site, so that even if the spacecraft returns to the sea even if there is a slight deviation, it can also ensure the safety of the astronauts.
Even the mainland's existing space technology can not only ensure the successful return of spacecraft and astronauts, but also take into account the protection of wildlife near the landing site, so as not to cause the mainland's wildlife resources to suffer.
In order to achieve these goals, the crews of the mainland's five helicopters have been required to stay at their respective jobs and prepare for the return of the Shenzhou-17 astronauts.
Search and rescue personnel, medical personnel and professional communication equipment closely related to the safety of the Shenzhou-17 astronauts have also been prepared accordingly, so that the lives of the astronauts can be guaranteed.
This time, the astronauts were greeted by a young "post-85" doctor and two post-95 ground commanders, who have excellent professional ability and quick thinking, and can better deal with problems that arise in their work.
At the same time as the return of Shenzhou-17, the responsibility of normalizing the operation and carrying out research work of the mainland space station falls on the shoulders of the Shenzhou-18 astronauts, who want to raise fish in space, maintain space equipment, and protect themselves and the safety of the continental space station.
The zebrafish raised by Shenzhou 18 have a genetic similarity of 87% with our humans, and the purpose of mainland space fish farming is the same as that of the Soviet Union in the last century, all of which are to obtain more scientific research results and contribute to human society.
The three astronauts on this spacecraft are all "post-80s," and the commander Ye Guangfu has rich experience, and he provided technical support to Wang Yaping in the cabin when Wang Yaping and others overhauled the equipment of the mainland space station.
Source: Guangming.com2022-04-16 ""Feel Good" x 3, a picture to review the famous scenes of the trio's space business trip
Shenzhou-17, like Shenzhou-18, will also silently undertake the maintenance of the continental space station after liftoff, so that the mainland space station can support the mainland to carry out more research projects and important work.
The astronauts fought on the battlefield without the smoke of gunpowder, they were heroes in peacetime, the heroes were welcomed home by the mighty Motherland, and the people of the whole country were waiting for their smooth return in front of the television.
Wonderful recommendations in the past
Foreign media broke the news: The U.S. military is secretly using Beidou navigation, and it turns out that China has greatly surpassed GPS
Disclaimer: The process and pictures described in the article are from the Internet, and this article aims to advocate positive social energy and no vulgar and other bad guidance. If it involves copyright or character infringement issues, please contact us in time, and we will delete the content as soon as possible!
---END---