According to CCTV News , in the next few months, my country's spacecraft will have three major launch missions. At that time, 6 astronauts will be in orbit at the same time, comparable to the "reunion of Guangmingding" of the six masters. It is a really exciting moment! What you don’t know is that the next three launches will carry a lot of "black technology", which is equally exciting!
One is Mengtian Experimental Cabin lifted off, the world's leading independently developed atomic clock is in place
You may have noticed such a news that at the end of September, the Wentian Experimental Cabin will temporarily adjust the interface from the core cabin to the permanent parking port through the robotic arm, from the current "one" character configuration to the "L" character configuration, and then wait for the arrival of the Mengtian Experimental Cabin.
according to the plan, Mengtian Experimental Cabin will be launched at an airport in October, and it will be connected with another permanent parking port of the core cabin. "L" The font configuration has become a permanent T-shaped configuration, which means that my country's national space experimental cabin is officially completed.
This time, the Mengtian experimental cabin took off with multiple "black technologies", including three atomic clocks independently developed by my country - 1 cold atom strontium optical clock, 1 cold atom rubidium microwave clock and 1 active hydrogen atom clock, which together form a space-based timing system with extremely high accuracy. Its second-level stability reaches 10 to the power of minus 17. What is this concept? The error is less than 1 second in 10 billion years, which is basically negligible.
atom The clock is the most accurate timing tool in the world. It uses laser to measure the transition of electrons in atoms between energy states and determine the completion time of . It is extremely difficult to develop. my country once expressed the idea of purchasing atomic clocks to European Space Agency , but was rejected. However, Chinese researchers worked hard and overcame many difficulties. They independently developed 3 high-performance atomic clocks.
More importantly, in the past, the atomic clocks were large in size and many parts. In order to save the space of space station , Chinese researchers have made drastic efforts on the structure and parts of the atomic clocks. Upgrading and renovating, they were forced to shrink into the size of several computer hosts, and they would be loaded into a pair of refrigerator-sized cabins from China Wenchang Space Launch Station .
is the Tianzhou 5 cargo spacecraft, transporting materials
As the saying goes, "the troops will move before they move," this is the case with marching and fighting, and the same is true for manned space flight. The core mission of Tianzhou 5 is to transport materials, one is to replenish the space station propellant , and at the same time transport equipment for maintenance or replacement. Tianzhou 4 carries 750 kilograms of supplementary Propellant.
is to transport astronauts' food and other daily necessities, because the Shenzhou 15 manned spacecraft will be launched at the end of the year, and there will be 6 astronauts in orbit at the same time. Tudou Analysis Cargo 5 will carry more food and daily necessities.
is to transport scientific equipment and supplies to ensure that large-scale scientific experiments can be carried out on the space station to achieve results that are difficult to achieve on the ground.
Tianzhou 5 cargo spacecraft will carry an important equipment - the 6th control torque gyro. According to the design, the Wentian Experimental Cabin and the core cabin must be equipped with 6 control torque gyros. With them, the space station can output torque through the fast-rotating flywheel without digesting fuel, and then perform attitude control on the space station. It is a typical high-tech product. The 6th control torque gyro is installed in the Wentian Experimental Cabin.
Control torque gyro Since it is so important, why didn’t it launch and take off at once? Everyone wants to! The key is that capacity and space are not allowed, especially capacity issues. Tudou checked and found that the launch mass of the Wentian Experimental Cabin was 23 tons, the mass of a control torque gyro was 170 kilograms, and the capacity of the Long March 5 B Yao-3 carrier rocket , which was equipped with the Wentian Experimental Cabin, was 25 tons, so for various reasons, the cargo No. 5 was finally carried.For safety reasons, I don’t care about this for a while!
was launched on Shenzhou 15. Six astronauts were in orbit at the same time
Shenzhou 14 spacecraft was launched at 10:00 on June 5. The three astronauts were Chen Dong, Liu Yang , and Cai Xuzhe . According to the plan, they will return around mid-December, which is consistent with the launch of Shenzhou 15 reported in CCTV News. The six astronauts will fly in orbit for 5-10 days at the space station at the same time. Then the three astronauts of Shenzhou 14 will return on the spacecraft , and the astronauts of Shenzhou 15 will continue to carry out their mission.
Some netizens have questions: Although our space station is not too big, it is fully capable of accommodate more than two people, why not execute it? In fact, accommodating several astronauts is not like living in a ground house. One can always be stuffed into it when you squeeze. There are also issues of reliability and comfort in the space station. Astronauts will perform a series of complex scientific experiments on the space station, and equipment and instruments will occupy part of the space. If it is too crowded, it will undoubtedly increase the difficulty and reliability of operating the equipment. In the event of a collision, it may lead to catastrophic consequences.
Another question is more interesting to everyone. Who are the astronauts of Shenzhou 15? In fact, the Shenzhou 15 astronaut has been confirmed and is currently in full swing. It is just because of various factors that it is not convenient to announce it for the time being.
Then who is most likely? Let’s make a guess based on the following “clues”.
Chinese astronauts have a tradition of "old bringing new" when performing missions. One or two astronauts who have once taken off the air will take one or two "newcomers". Everyone understands the truth.
Because the Shenzhou 14 spacecraft and the Shenzhou 15 spacecraft will achieve the first time that six astronauts are in orbit at the same time, the three astronauts of Shenzhou 14 were excluded.
Shenzhou 13 astronauts performed a six-month flight mission. According to the experience of Shen Twelve , astronauts need to conduct a series of dynamic tracking, maintenance and observation of astronauts for at least 1 year.
Based on the above clues, Zhai Zhigang , Wang Yaping , Ye Guangfu , Chen Dong, Liu Yang, Cai Xuzhe and other six astronauts can be excluded. In the end, they can only choose among the remaining Yang Liwei , Jing Haipeng , Fei Junlong , Liu Wang , Deng Qingming , Zhang Xiaoguang, Zhang Lu and other astronauts, who will it be? Potato doesn’t know, but netizens can guess it boldly.
is written later
Of course, as ordinary people, the most anticipated six astronauts are undoubtedly in orbit at the same time, comparable to the Victory Congress. Of course, leaving Shenzhou 15 astronauts may be a new challenge. By then, the of the Tiangong space station has been built. In addition to daily maintenance, the next work may also involve a large number of scientific experiments. It can only be said that astronauts are on the go! What you see and get is very scientific# # At the end of the year, 6 Chinese astronauts will be on business trips in space# #Dream Tian Experimental Cabin Launch Time#
Original: Potato
