Before leaving the capsule, the astronauts conducted the first emergency evacuation exercise in orbit, the content of the exercise is to assume that the space station suddenly lost pressure, the astronauts should open the emergency gas cylinder at the first time to ensure that the air pressure of the space station is stable, and then urgently evacuate to the return module. The purpose of this exercise is to keep astronauts on a certain level of vigilance, after all, the space station in orbit may collide with some space junk, although these space junk is not large, and may even be a paint fragment, but it will cause a devastating blow when running at high speed.
Cosmic Impression | exclusive in-depth science column No. 1596
Today, Shenzhou 13 astronauts carried out the first outgoing activity of this orbital flight, as of November 7, the three astronauts have lived in the space station for more than 20 days, this mission has several highlights, first, the astronauts in orbit stay time increased from 3 months to 6 months, which is a new test for astronauts, cargo spacecraft supply and space station support capabilities;
Picture interpretation: Shenzhou 13 astronauts carried out the first outgoing activity of this mission
Picture interpretation: After the astronauts completed the emergency evacuation drill, they carried out the cabin activities, and the picture was wearing an extravehicular spacesuit
Picture interpretation: Astronaut out of the capsule
Second, this mission is the last flight of the space station's key technical verification stage, starting next year, the space station will be transferred to the construction stage, at that time, the two experimental modules of Qingtian and Mengtian will be connected to the core module to form a three-cabin T-shaped basic configuration; third, the Shenzhou XIII mission will carry out 2 to 3 outgoing activities, install the relevant components of the large and small mechanical arms, and make full preparations for the subsequent construction of the space station.
It is worth noting that before leaving the capsule, the astronauts conducted the first emergency evacuation exercise in orbit, the content of the exercise is to assume that the space station suddenly lost pressure, the astronauts should open the emergency gas cylinder at the first time to ensure that the air pressure of the space station is stable, and then urgently evacuate to the return module. The purpose of this exercise is to keep astronauts on a certain level of vigilance, after all, the space station in orbit may collide with some space junk, although these space junk is not large, and may even be a paint fragment, but it will cause a devastating blow when running at high speed.
The International Space Station was once hit by a piece of paint-speckled debris, forming a hole with a diameter of 5 mm
Picture interpretation: There are currently 500,000 stone-sized fragments in orbit, and there are 100 million fragments with a diameter of more than 1 mm
For example, the isetical arm of the International Space Station was once hit by a patch of paint-speckled debris, creating a 5-millimeter-diameter hole that could cause a loss of pressure if it had occurred on the bulkhead or on a spacesuit. There are currently 500,000 stone-sized fragments in orbit, and 100 million more than 100 million fragments in diameter, while only tens of thousands of fragments are tracked by ground-based radar. Therefore, the combination of this extravehicular walk and the emergency evacuation exercise is of strong practical significance, which can allow astronauts to quickly evacuate the space station and return to the ground at a critical moment. Cosmic Impression is exclusively published and unauthorized reproduction is prohibited.