What exactly went wrong? The Shenzhou-17 manned mission was a complete success! However, many people have also seen that this time, after the return capsule of the Shenzhou-17 manned spacecraft successfully landed at the Dongfeng landing site, it again appeared in a "dumping attitude" on the ground instead of landing upright.
It is true that this successful landing mode is a bit uncomfortable compared to uprightness, but it is not impossible, but it is more difficult, is it because of technical problems?
Or is there really something else that makes the landing problematic? Let's take a detailed look at how to do it, and this time it is also a real "dumping posture", let's understand step by step.
Shenzhou-17 successfully returned to Earth!
That's right, the Shenzhou-17 astronauts have successfully returned from a "space business trip", which means that the entire mission has ended, and the Shenzhou-17 manned mission has been a complete success.
Of course, the three astronauts Tang Hongbo, Tang Shengjie, and Jiang Xinlin are also in good condition, flying in orbit for a total of 187 days, and they have also created a lot of achievements for the mainland.
First, during the flight of Shenzhou-17, two out-of-cabin activities were carried out and the repair of the solar wing of the Chinese space station was completed. Of course, this mission is the first time since the construction of the continental space station, mainly during the operation of the space station, there was an impact of space particles.
At the same time, Lin Xiqiang, spokesman for the China Manned Space Program and deputy director of the China Manned Space Engineering Office, said that the impact area this time was in the space station Tianhe core module solar wing cable area.
It is also due to the impact of space debris, which has led to the loss of part of the power supply capacity. Although it has not affected the operation of the entire space station, from the perspective of long-term operation, it is necessary to improve the technical capabilities for repair, and it also provides a foundation for the future restoration of the continental space station.
Second, during the orbit period, the three astronauts cooperated to complete the space station's multiple cargo out of the cabin mission, and successively carried out the installation, commissioning, maintenance and repair of equipment inside and outside the cabin.
Third, with the close cooperation of ground scientific researchers, a large number of space science experiments involving microgravity basic physics, space materials science, space life science, aerospace medicine, and space technology have been completed.
Of course, in addition to these comprehensive achievements, there is actually a typical experimental materials science, that is, the first batch of extravehicular exposure experimental material samples were retrieved, a total of 407 pieces.
This time, when Shenzhou 17 returned to Earth, the astronauts completed the dismantling and storage of the experimental samples, and also returned to the ground with the astronauts and the Shenzhou spacecraft, and handed them over to scientists to carry out further ground research.
Therefore, Shenzhou 17 has completed a lot of achievements in space experiments, and it is also expected that Shenzhou 18 astronauts Ye Guangfu, Li Cong, and Li Guangsu will create miracles for China again. Let's take a look.
What exactly is the problem, and why is the Shenzhou-17 return capsule not upright?
It is true that this time the Shenzhou 17 astronaut return capsule is not upright, but a dumping attitude, but what needs to be explained here is that whether it is an upright or a dumping attitude, as long as the astronauts are safe and there is no problem, then the entire mission will be completely successful.
As for the upright or inclined mode, it is actually friendly to astronauts, and the most ideal landing method is to land upright is the most ideal landing state, so that the astronauts will receive the least impact.
Since the Chinese manned spacecraft has carried out its mission, it is true that "upright landing" is very rare, and only Shenzhou 6 and Shenzhou 13 have achieved upright landing.
In fact, this problem is very complicated, as long as there is a problem in any link, it may lead to changes in the return capsule.
And from the technical point of view - the mainland has also explained before that whether it can land upright requires astronauts to personally operate, "cut" the rope of the parachute at a critical moment, and it can stand upright after cutting, and it will almost tilt, or it will be pulled down by the parachute.
In terms of external environment, such as during landing, it may be difficult to maintain high winds.
The main parachute of the spacecraft covers an area of about 1,200 square meters, which can cover three basketball courts after being fully deployed, and the length of the main parachute is more than 70 meters, which is enough to span the football field.
In addition to these, there is also the state of the ground, if uneven, etc., which can affect the final result of its landing.
Therefore, it is very difficult to land upright, which is one of the factors why it is very rare, it is normal for Shenzhou 17 not to stand upright, the problem here is too complicated, and it is not as simple as imagined.
But in fact, at the moment of landing, according to the screen display, it was upright, and this is the general situation.
Anyway, the final point is that the astronauts are safe and in good condition, and I once again said to the Shenzhou 17 astronauts Tang Hongbo, Tang Shengjie, and Jiang Xinlin that they have worked hard.
What will astronauts do when they return to Earth?
In fact, the most important thing is to recover physically, which is the most critical, because astronauts have been on a mission in space for half a year, and their bodies have changed.
And after returning, it will change from a weightless environment to a gravity environment again, which is what needs to be adjusted.
According to the normal plan, the astronauts will undergo a five- to six-month recovery work, which is mainly divided into three phases.
- The first stage is the isolation recovery period, which lasts for 3 to 4 weeks, and is mainly to promote the basic recovery of the astronaut's physiological functions
- The second stage is recuperation and recovery, which lasts for 4 to 5 weeks, and is mainly to promote the full physical and mental recovery of astronauts
- The third stage, which lasts for 3 to 4 months, is to allow astronauts to gradually enter the training phase of various missions.
Finally, after half a year of recovery, there will be a comprehensive and comprehensive examination and evaluation to determine that the astronauts will finally be transferred to the mission training stage. Of course, depending on the situation of the astronauts, the recovery process may be somewhat long and some short.
You should also see that the mainland has appeared in the resumption of meetings within 2 months, which shows that in fact, the mainland's adjustment technology in this regard is already very good, and I look forward to the three astronauts meeting with you again after recovery.
Of course, this crew is a combination of astronauts belonging to the mainland's "second and third batches", and it should continue to carry out missions in the future.
At the same time, in accordance with the mainland's aerospace rules, these three astronauts will also participate in the selection of manned lunar landing in the future, whether they can be shortlisted, whether anyone may be shortlisted, mainly depends on the final list of the mainland's manned lunar landing mission, everyone wait and see, this is the general situation.
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