Warning: sizeof(): Parameter must be an array or an object that implements Countable in /home/helpmekim2dhsefl3pwmseak8ismo2/wwwroot/wp-content/plugins/ad-injection/ad-injection.php on line 824 Warning: count(): Parameter must be an array or an object that implements Countable in /home/helpmekim2dhsefl3pwmseak8ismo2/wwwroot/wp-content/plugins/ad-injection/ad-injection.php on line 831

The first is a major demonstration of engineering capabilities, the rapid rendezvous and docking pair launch window, and the rocket’s orbit accuracy is extremely high (the two missions of Tianzhou 2 and Shenzhou 12 have achieved “horrible” orbit accuracy); and After the spacecraft enters orbit, it must quickly complete the status confirmation, and enter the orbit change and rendezvous and docking procedures. The previous mainstream two-day rendezvous program at home and abroad firstly has a greater tolerance for orbit deviation, and secondly, it has two days to confirm various states for the spacecraft and gradually change its orbit, with a large task margin and a high fault tolerance rate. Russia, a veteran manned spaceflight player, has been engaged in rapid rendezvous and docking for so many years, and it was only after 2010 that it began to engage in rapid rendezvous and docking, and it has been tested many times on the Progress cargo spacecraft, and it was transplanted to the alliance manned spacecraft when it matured. China has used the fast docking model from the beginning of the space station mission, which also shows that our technology is highly mature and we are confident in our technology. The role of rapid rendezvous and docking is easy to say. For manned spacecraft, astronauts can enter the space station in a few hours without having to squeeze in a small spacecraft for too long. It is also easier for a cargo spacecraft to transport some time-sensitive payloads. From ground packaging to receipt by the astronauts, the time can be compressed to about 12 hours. Quick docking also helps to release measurement and control resources, especially now that China adopts all-phase autonomous rendezvous and docking technology. It only needs to inject space station orbit parameters into the spacecraft, and the spacecraft can design its own orbital change plan until the docking is completed, without too much intervention on the ground. .

zhiwo

By zhiwo

0 0 vote
Article Rating
Subscribe
Notify of
guest
11 Comments
Most Voted
Newest Oldest
Inline Feedbacks
View all comments
helpmekim
7 months ago

The first is a major demonstration of engineering capabilities, the rapid rendezvous and docking pair launch window, and the rocket’s orbit accuracy is extremely high (the two missions of Tianzhou 2 and Shenzhou 12 have achieved “horrible” orbit accuracy); and After the spacecraft enters orbit, it must quickly complete the status confirmation, and enter the orbit change and rendezvous and docking procedures. The previous mainstream two-day rendezvous program at home and abroad firstly has a greater tolerance for orbit deviation, and secondly, it has two days to confirm various states for the spacecraft and gradually change its orbit, with a large task margin and a high fault tolerance rate. Russia, a veteran manned spaceflight player, has been engaged in rapid rendezvous and docking for so many years, and it was only after 2010 that it began to engage in rapid rendezvous and docking, and it has been tested many times on the Progress cargo spacecraft, and it was transplanted to the alliance manned spacecraft when it matured. China has used the fast docking model from the beginning of the space station mission, which also shows that our technology is highly mature and we are confident in our technology. The role of rapid rendezvous and docking is easy to say. For manned spacecraft, astronauts can enter the space station in a few hours without having to squeeze in a small spacecraft for too long. It is also easier for a cargo spacecraft to transport some time-sensitive payloads. From ground packaging to receipt by the astronauts, the time can be compressed to about 12 hours. Quick docking also helps to release measurement and control resources, especially now that China adopts all-phase autonomous rendezvous and docking technology. It only needs to inject space station orbit parameters into the spacecraft, and the spacecraft can design its own orbital change plan until the docking is completed, without too much intervention on the ground. .

heloword
7 months ago

The fast docking between the spacecraft and the space station is a commonly used method in the world. It should be said that the speed of Shenzhou XII is very fast in 6.5 hours. However, the rapid docking between the spacecraft and the space station has strict requirements on the launch window on the ground and also consumes a lot of fuel. The completion of the docking within 6.5 hours shows that we have reached the world’s advanced level of round trips between heaven and earth. Several spacecraft before Shenzhou 12 did not use rapid docking. We are mainly in the scientific research stage of manned spaceflight. It is our indispensable work to verify various systems and various working conditions. As for why the spacecraft needs to quickly dock with the space station. CCTV has talked about it many times, just to make the astronauts more comfortable and to make the ground control system easier. But we believe that the most important significance lies in the “emergency response”-that is, through the ground system standing “Shenzhou ready to go” and the spacecraft and the space station have mature and rapid docking operations, so that we have the rapid response capability of the “assistance space station”. Provide timely personnel and material support after the space station fails. Although the International Space Station has invention rights in this regard, China Aerospace will do better!

helpyme
7 months ago

At 9:22 on June 17, the 58.34-meter-high Long March 2 F rocket carried the Shenzhou 12 spacecraft and three Chinese astronauts to the China Space Station. After 11 minutes, the rocket and the spacecraft successfully separated, marking the successful launch of the rocket. The next step is the rendezvous and docking of the spacecraft and the Chinese Space Station. For the first time, Shenzhou 12 has applied fully autonomous rapid rendezvous and docking technology in the field of manned spacecraft. Soon after the spacecraft is separated from the final stage of the rocket, it will enter the fully autonomous mode and begin the long-range guidance phase flight. Shenzhou 12 uses the fastest 6.5-hour quick docking plan. For comparison, on June 11, 2013, Shenzhou X was launched into space, and on June 13, Shenzhou X and Tiangong-1 space laboratory were docked. On October 17, 2016, Shenzhou 11 was launched into space. On October 19, Shenzhou 11 and Tiangong 2 realized automatic rendezvous and docking. It took two days. In 2021, the U.S. Crew Dragon spacecraft will dock with the International Space Station 8 hours after launch, and the rendezvous and docking between my country’s Shenzhou 12 and the Chinese Space Station will be even faster. According to the calculation of the orbit period, Shenzhou 12 only needs to orbit the earth 4.3 times to connect with the forward docking interface of the Tianhe core module of the Tiangong space station. During the period, Shenzhou 12 will change orbit 6 times in the middle, and the whole process will be autonomous by the spacecraft computer. Control without the astronauts. In order to welcome the arrival of the Shenzhou 12 spacecraft, the core module of the Chinese space station Tianhe lowered its orbital height early and entered the rendezvous and docking orbit, with an orbital height of about 370 kilometers, to welcome the first three Chinese astronauts. my country took the lead in proposing the “rapid rendezvous and docking autonomous navigation and guidance solution based on absolute positioning data”, which solved the world-class problem of relying on ground guidance in the long-range guidance section, and introduced the Beidou satellite navigation system’s spatial position data support in the long-range guidance section. , After the spacecraft enters orbit to complete the docking, no manual intervention is required. my country is the third country in the world that has mastered docking technologies for spacecraft and space stations after the United States and Russia. There are some black technologies in spacecraft docking and separation. After the spacecraft is docked with the core module of the Tianhe Space Station, a closed channel is formed, allowing astronauts to enter and exit smoothly. The difficulty is that there is no air and no resistance in space. If two metals are too close together, it will be like welding together. This phenomenon is called “cold welding”. In order to avoid cold welding, my country has developed a special “protective film”. After it is applied to the butt joint structure, it has both lubrication and isolation effects, which mainly solves the problem of cold welding. The docking between the spacecraft and the space station is essentially another form of “collision”, which may deviate if you are not careful. In order to solve this problem, my country has added dampers to the docking structure. The huge and excess impact force generated during the docking process of the spacecraft and the core cabin can be buffered, thereby increasing the stability of the spacecraft. Since China’s manned spaceflight created a manned test in 18 years, there have been zero deaths. The twelve Shenzhou spacecraft successfully completed their missions every time. There were 7 manned flights without a single accident, and the success rate was 100%. This record far surpasses the United States and Russia. Both the U.S. and Russia’s manned aircraft have had serious accidents and caused heavy losses. The most famous of these is the accident of the two US space shuttles Columbia and Challenger. In 1967, the former Soviet Union Komarov entered space on the Soyuz spacecraft, and eventually died due to a breakdown. Before the realization of manned spaceflight, the United States conducted 21 unmanned flight tests, the Soviet Union conducted 7 times, and China only conducted 4 times. The four test flights from 1999 to the end of 2002 were all successful. In 2003, Yang Liwei took the Shenzhou V into space and returned smoothly, verifying the reliability of the Shenzhou spacecraft and starting China’s manned space flight. The designer of the Chinese manned spacecraft stated that there was a principle in the design of the Shenzhou spacecraft, which is to make every system of the spacecraft operate normally with one failure, and to ensure a safe return after the second failure. NASA, the European Space Agency, and the Russian Aeronautics and Space Administration have all expressed their congratulations, and the space has ushered in the Chinese permanent residence.

sina156
7 months ago

The old American manual 48 hours, the fastest 4 hours, we are 6.5 hours, very fast; the key is that the autonomous docking can avoid many failures. It is a very advanced technology. The scene of the spacecraft in the science fiction film arriving at the port will come true.
PS. The details are the devil, and the advanced nature of the Chinese space station is far underestimated; this is still a 10-year design life, and it will be expanded in the future to be more advanced

yahoo898
7 months ago

It successfully completed the docking with the space station within 6.5 hours of flying around the earth in 4 laps, and officially launched the aerospace mode of “Earth eat breakfast, space station eat dinner”, which is of great significance to the construction of the space station and space flight. As a result, the time spent in the narrow space of the spacecraft is greatly reduced, the unnecessary physical and energy expenditures of the astronauts are reduced, and the space flight becomes more comfortable. In addition, it has also strengthened the support capabilities of the space station. In the event of an emergency, the rapid rendezvous and docking can quickly transport emergency supplies, carry out emergency rescue, and implement emergency repairs for faults. Some people may think that quick docking has such great benefits, why not adopt the direct docking mode. The rocket sends the spacecraft to the predetermined orbit. First, it needs to adjust the flight on its own orbit. In addition, according to the orbit of the space station, choose a suitable location and time for docking. It can be said that it can be successfully implemented within 4 laps of the flight. Rendezvous and docking is already a very fast docking mode. This will not only ensure the success rate of docking, but also ensure the safety of space flight. The rapid rendezvous and docking was achieved this time thanks to the improvements to the Shenzhou XII spacecraft in the following aspects:-A number of localized chip application improvements were made, components and raw materials were fully autonomous and controllable, and the use of spacecraft was controlled. The computer and data management computer completely use domestic CPU chips. ——With the completion of my country’s Beidou system’s global networking, the Beidou navigation terminal has also been introduced into the design of the spacecraft, and the Beidou system positioning data is used for navigation calculations and return to search and rescue landing point reports. ——Relying on the relay satellite system of our country, the measurement and control has been fully transformed from ground-based measurement and control to space-based measurement and control, and ground station ship measurement and control is supplemented, reducing the demand for measurement stations and measurement ships, which not only expands the coverage of measurement and control, but also saves The cost of the task.

leexin
7 months ago

The fast docking time is short, and people and goods can be sent to the space station faster. For personnel, the time of the onset of space motion syndrome is the most serious 8-12 hours after entering orbit, and the symptom resolution is generally 30-48 hours. The 6.5-hour rapid docking avoids the most severe time period of space motion syndrome. The automatic docking system fails, and the manual docking also has a better state. For cargo, some cargo cannot be stored for a long time in a spacecraft under unfavorable conditions, such as biological research loads, fruit with a short shelf life or even ice cream. The application of fast docking can deliver fresh loads to the space station, which takes more than 2 days. The slow docking is not timely. As for the difficulty of 6.5-hour fast docking, the Soviet Union achieved ultra-fast docking of 46 minutes/half-circle orbit in 1968. No one really thinks that 4 laps of fast docking will have any difficulty in reaching the sky in the 21st century, even for ballistic missiles. What is the value of the control accuracy?

greatword
7 months ago

Fast, certainly marks the maturity of my country’s aerospace technology and low-Earth orbit docking technology (not long ago, I also lamented Maozi’s fast docking speed, and now I am more proud of it) The second is the guarantee of the safety of astronauts. The Changer 2 F can already be launched quickly in 10 days (standby, from the Aerospace Enthusiast Network), coupled with rapid docking technology. In case of unexpected safety incidents or health problems, the safety of astronauts can be guaranteed. In short, China Aerospace is using more advanced technology to create a more secure space station environment and win more trust and support from us.

loveyou
7 months ago

Everyone, you can talk about it or make jokes. Engineers, please don’t disclose technical details in order to show your professional authority. Professionals do not need to know the platform to learn professional knowledge, and the general public can’t understand it, but you may make mistakes! Enlightenment is still necessary, especially in the current international environment, there are all kinds of people in China! Be wary of unconscious mistakes! No matter how awesome you are in professional terms, you can’t match the skills of the Internet experts!

strongman
7 months ago

Quick docking is not only to make astronauts more comfortable, but also to have terrifying autonomous flight control capabilities, that is, in case the astronauts are unwell and cannot independently control the spacecraft, the ground can also get people back under limited control. According to this development, it will not take long for the Hell Paratroopers and Warhammer 40k to be realized: set up high-orbit synchronization cabins or docks, station an aerospace force, and send people up and drop paratroopers are fully controlled by the spacecraft… Can you sleep? Isn’t this more scary than hitting the world in 24 hours?

stockin
7 months ago

Speed is technology, and the rapid advancement of aerospace technology is also a manifestation of the power of a major country. From scratch, from being to being strong, this is not an easy step forward. Come on, China~! ! On June 11, 2013, Shenzhou X was launched into space. On June 13, Shenzhou X and Tiangong-1 space laboratory were docked. On October 17, 2016, Shenzhou 11 was launched into space. On October 19, Shenzhou 11 and Tiangong 2 realized automatic rendezvous and docking. It took two days.

11
0
Would love your thoughts, please comment.x
()
x