At 11:17 this morning, Shenzhou 14th astronauts Chen Dong and Cai Xuzhe conducted the third out-of-cabin event. This time there are many highlights. Let’s talk about this topic today. First of all, the time for leaving the cabin this time. After the docking of the "Mengtian" test cabin, rather than the second time, the choice was before the docking of the "Mengtian" test cabin. This shows that we are confident in the transfer of the space station and do not require astronauts to leave the cabin in advance to make preparations.
out of the cabin again
in this angle
Secondly, this is the third out of the cabin for Shenzhou 14, and the previous Shenzhou 12 and Shenzhou 13 only carried out two out-of-cabin activities. This group of astronauts were indeed very busy. The third is that this time the cabin is different from the previous six times of the "Tiangong" space station. For the first time, a combined robotic arm is used to assist astronauts in the cabin, that is, a 5-meter forearm and a 10-meter forearm can be combined to achieve a larger range of motion.
Large and Small robotic arm combination assists astronauts to leave the cabin
Many people used to praise our space robotic arm, saying that it can walk seven degrees of freedom, which is the world's first. In fact, there is no praise. At the International Space Station, except for the fixed robot arm outside the Japanese Hope test ship that cannot move, the other two can actually walk for seven degrees of freedom, including the European robot arm outside the Russian Science test cabin, and the Canadian robot arm No. 2 on the large truss.
There are 3 robot arms on the International Space Station
, especially the Canadian No. 2 robot arm. Many people used to think that it could only walk in a straight line on a large truss of 109 meters, and could only stop at a few fixed mooring points. But in fact, the Canadian No. 2 robot arm can also move to each cabin with adapters for seven degrees of freedom. Whether it is the docking of the Russian "Science" test cabin or the "capture" of the cargo spacecraft, it has played a huge role.
Many people think that the Canadian robot arm can only climb on trusses like this
But you see, it doesn’t climb onto the freight dragon spacecraft (only the Canadian robot arm is equipped with a Canadian robot)
is the two robot arms docked, only our "Tiangong" space station can do it, there is only one in the world, and there is no branch. This is because the International Space Station is pieced together by a bunch of countries and lacks a unified plan. Although there are Japanese robotic arms, European robotic arms and Canadian robotic arms, they have never considered cooperation. They are all "everyone sweeping the snow in front of the door", which is also the root cause of the current problems of the International Space Station.
The European robot arm outside the Russian Science Experimental Cabin also started
Let’s talk about the out-of-cabin activities. In fact, in addition to the basic operations of lifting the panoramic camera and replacing the " air-conditioning compressor ", there is also an important task, which is to move the sun wing of the "Tianhe" core cabin to the ends of the two test chambers, and arrange it at 90 degrees with the large sun wing.
Some imagination pictures moved the sky and the sun wings outside.
Some did not move, and they remained in place. The shift of the sun wings of the "Tianhe" core compartment were some imagination pictures, and some did not draw them, which made the editor suspected that the task had been cancelled. But in fact, this time, judging from the scene of the fourteenth astronaut of Shenzhou leaving the cabin, its current position will not only be blocked by the large sun wings, affecting the power generation efficiency, but also affecting the walking of the robotic arm. It must be a major event to change the position. This will be a major event in the end of the construction of in my country's space station. I just don’t know if it’s time to change it this time, or if I have to wait for the Shenzhou 15 astronauts to change it.
From this perspective, the core cabin sun wings really sounded quite hindered
will indeed affect the movement of the robotic arm. The sun wing needs to be moved. When it comes to Shenzhou 15, so far, the launch missions during the construction phase of my country's space station have basically been completed, and only Shenzhou 15 is left. It is expected that it will launch on November 29. At that time, the astronauts of Shenzhou 15 will meet in the sky with Shenzhou 14 astronauts. my country will have 6 astronauts in orbit at the same time, which is more than the American astronauts on the International Space Station. This is a small "response" to the United States' prohibition of space cooperation with us.
