China Space Station Tianhe Core Module Launched Successfully
At 11:23:15, 618 milliseconds on April 29, 2021, the China Space Station Tianhe Core Module was lifted by the Long March 5B carrier rocket and successfully launched into orbit to the scheduled orbit, unveiling the construction of the China Space Station. With the successful separation of the Tianhe core module from the rocket and entering the predetermined orbit, the two wings of the solar windsurfing board were deployed smoothly and working normally. The launch mission was a complete success, marking the full launch of the orbital assembly and construction of the Chinese Space Station.
Xi Jinping calls congratulations on the successful launch of the Tianhe core module of the Chinese space station-Xinhuanet
According to media reports, the space station Tianhe core module will be launched on April 29. The launch mission will be carried out at the Hainan Wenchang launch site. The core module will be lifted off by the Long March 5B Yao-2 carrier. At present, the launch of the core module has entered the countdown stage, which also means that the prelude to the construction of my country’s space station is about to begin. This will be another milestone in China’s manned spaceflight.
It’s done! In a word: The normalization of manned spaceflight has just begun. The “Long March 5 B Yao 2” carrier rocket has experienced more than 8 minutes of flight and successfully lifted the sky and the core module into the scheduled orbit. The curtain for the construction of my country’s space station is on. Pulled away slowly. Time flies and time flies. Today’s “Long March V” series of carrier rockets have successfully flew five times in a row, and they are very likely to become the next “golden rocket”. Xinhua News Agency watched the flight, and the author even yawned. This is a completely different mentality compared with the breathless stare when the “Long March 5th and 3rd” went around more than a year ago. When we think that the success of the “Long March 5” carrier rocket is not a new thing, it shows that our realm has taken a new level. The five-star red flag lights up the starry sky. The Chinese space station officially started to return to the mission itself. The payload of the mission’s “Tianhe” core cabin weighs 22.5 tons, setting a new record for the maximum mass load of 21.6 tons set by the new manned spacecraft last year. Its volume has reached 50 cubic meters, which is also my country’s current record. The largest payload launched is still my country’s most versatile spacecraft so far. The successful launch of the core module of the “Tianhe” opened the prelude to the construction of my country’s “Tiangong” space station. From an overall point of view, the “Tianhe” core cabin can be divided into three parts-node cabin, small column section and large column section. Authorized from Xingzhi Technology, each component is marked by the author, the node cabin and small column section The diameter is 2.8 meters, and the diameter of the large column section is 4.2 meters. This design has sufficient scientific basis-since the diameter of the Long March No. 5 is 5 meters, the diameter of the bottom end of the fairing is also 5 meters, while leaving a part of the safe space. Therefore, the maximum diameter of the internal load is 4.2 meters. Not only the maximum diameter of the core compartment is this number, but the diameter of the new manned spacecraft test ship launched in May 2020 is also 4.2 meters. Furthermore, we can partition the space station’s functions, including the node capsule for expanding the scale and also for space walks; the living and resting area (located in the small column) for the members of the capsule, the work, scientific research and The control compartment of the control compartment (located at the front end of the large column section and the rear end of the small column section), and the resource compartment loaded with important resources such as fuel (located at the rear end of the large column section). Is it “plagiarism” if it looks like a “mir”? Don’t misunderstand “Tianhe”. At this time, you may have noticed that this core module looks like the core module of the Mir space station in terms of appearance and function. However, this neither shows that we are behind the Russian Aerospace for decades, nor is it a “plagiarism” of the Russian plan, but by design. Imagine that if the core cabin is completely designed as a 4.2-meter-diameter column, then there will be no place to install external facilities such as solar panels, robotic arms, and communication antennas, and because the top of the fairing of the Long March 5 is converged into Approximately tapered, so obviously there will be some waste of space at the top. Therefore, the installation of a small column section and node compartment with a diameter of 2.8 meters will help the installation of external facilities and the utilization of the fairing space, and expand the overall volume. Good designs are mostly similar, and they follow similar scientific and technical principles behind them. Moreover, although the appearance is similar, the “Tianhe” core module is quite different from the “Mir” core module. The “Tianhe” core cabin comes with a dedicated airlock for exit activities, while the “Mir” does not have such a design. All of them are docking interfaces, which means that the “Mir” can only be used for exit activities during the initial stage of station construction. It is very inconvenient to realize through the 800mm diameter counter interface. Not only is it more convenient for astronauts to get out of the cabin, the robotic arm of “Tianhe” located on the large column can further expand the astronaut’s range of activities outside the cabin. It will also become very convenient for both extravehicular experiments and on-orbit maintenance. Although with the construction of the space station, the main airlock will be taken by the “Wentian” experimental cabin, the exit hatch of the node cabin can still be used as a backup exit hatch. The main energy of “Tianhe” comes from two solar wings-unlike the hard solar panels of the Mir, this solar wing is made of flexible material. Without changing the output power, the flexible solar wing achieves a large The weight is reduced, and the envelope size when folded is also smaller. “Tianhe”‘s own power system can maintain orbit by itself, and can be supplemented with propellant on orbit by the “Tianzhou” series cargo spacecraft. The on-orbit propellant injection technology successfully tested by “Tianzhou-1” will finally be applied today, a few years later. At the same time, installing a series of momentum wheel modules between the small column section and the large column section will enable the space station to slowly change its posture during operation and reduce fuel consumption. Moreover, the “Tianhe” core cabin also has its own ion engine. This extremely high specific impulse engine will further save valuable fuel. These measures can allow the core cabin to run longer in orbit. “Tianhe” modular and standardized in-cabin scientific experiment cabinets and standard experiment units installed in the scientific experiment cabinets will make space experiments more convenient-as long as they follow the same technical standard, they will all be able to be incorporated into science The experiment cabinet not only facilitates the operation of the astronauts, but also improves the use and turnover efficiency of the scientific experiment cabinet. At the same time, during the operation of the experimental cabinet, a large amount of experimental data will be continuously descended to the ground through the high-gain antenna that comes with the core cabin, so that researchers on the ground can grasp the working status of the scientific research load in the space station in real time. I believe that through a series of scientific experiments, we will gain a new understanding of the space environment. “Tianzhou” and “Shenzhou” are ready to go. The excitement will continue to let us turn our attention to the follow-up tasks this year. The “Long March 7” and “Tianzhou 2” are still being assembled intensively. Next month, the “Tianzhou-2” cargo spacecraft will be fully loaded with supplies to dock with the “Tianhe” core module, waiting for the arrival of the astronauts on the scheduled orbit. The crew of “Shenzhou 12” is also training for the “Tianhe” on-orbit mission, and the astronaut crew is ready to come out. More than four years have passed since the last time a Chinese astronaut entered space. The last time, astronauts Jing Haipeng and Chen Dong lived in space for 33 days, completed a series of space science experiments and technical tests, and achieved the goal of astronauts’ mid-term residency. After the completion of the rendezvous and docking of Tiangong-2 and Shenzhou-11, the astronauts opened the door of Tiangong-2 and successfully entered the “Tiangong-2” space laboratory (picture source: see watermark) This year, the Chinese will return to space, for The peaceful use of space by mankind has made new and greater contributions. Not only that, we will also enter a new era of normalization of manned spaceflight. Because this year there will be a second group of astronauts set off. They will replace the first crew and continue to perform on-orbit missions in space. If everything goes well, we will get more first-hand information about the long-term impact of the space environment on astronauts, and this information is very precious, even for the United States, Russia and other major space powers, the content disclosed in various journals is also Just the tip of the iceberg. Still this year, “Tianzhou 3” will also set off for the “Tianhe” core module to replace “Tianzhou 2”, provide more supplies, carry out more experiments on key technologies for space station operation, and ensure that the core module is in orbit. Operation to meet the survival needs of the astronauts in the core module. The task will continue. Beginning next year, the “Tiangong” space station will be further expanded: the two experimental modules “Wentian” and “Mengtian” will be launched by the “Long March 5B” carrier rocket. They will be docked with the core module respectively, in the two experimental modules. After the docking is completed, the construction period of the “Tiangong” space station will end. Schematic diagram of the Tiangong space station (China National Space Administration) By then, the greatly expanded scientific experiment cabinet will turn the “Tiangong” space station into a national “space laboratory.” At that time, in addition to astronauts who were born as pilots, scientific researchers will also enter space and become “load experts” to conduct research in orbit more efficiently. After these constructions, we will see a completely predictable future-the barriers to entry into space will inevitably be lowered. After reading this article, you may also have the opportunity to travel the Xinghai in the future. A few years later, the “Sky Survey” space telescope will also set off to space, flying in common orbit with the space station. The space telescope will focus its gaze on the deep and vast universe, bringing us more magnificent wonders of the universe. Here we want to particularly emphasize the concept of “common-orbit flight”. Since the telescope and the space station are flying in a common-orbit, it will greatly reduce the difficulty and cost of maintenance of the telescope. Astronauts in the space station can be ready to provide maintenance services for the space telescope at any time, so that it can work longer and more stable. Our footsteps will still not stop. In the longer term, the scale of the “Tiangong” space station may even be further expanded-if we send the second core module, the third and fourth experimental modules into space and dock with the “Tiangong”, then we will Get a large space complex weighing 180 tons! Perhaps by that time, visitors of different languages will be welcome in the space station. On the ground, the barriers between people exist in the form of national boundaries, while in space, we will be like brothers and sisters, and work together to explore the unknown borders and peaceful use of space for the species of mankind. The footsteps to the Xinghai never stop. Just as you read this article, the “Tianhe” core module has entered a predetermined orbit. Starting today, China’s manned spaceflight industry has been transformed. The length of Chinese astronauts’ lives in space will continue to grow after four years of stagnation, and will continue to grow. We have missed the sea, but this time, we will never miss the Xinghai.