Shenzhou 14 will adopt fast return mode and is expected to land at 20: 07 pm on February 4, 65438. The spacecraft still needs to fly around the earth several times to reduce the orbit of the Shenzhou 14 manned spacecraft. After the separation of Shenzhou 14 manned spacecraft from space and core cabin, it needs to go through four stages: braking flight stage, free taxiing stage, reentry stage and landing stage.
In terms of astronaut support, Xu Chong, chief engineer of the Shenzhou 14 landing site test team of China Astronaut Center, said that the search and rescue mission optimized the workflow of medical supervision and medical insurance, reduced the exposure time of astronauts outside the cabin, and allowed astronauts to enter the warm and bright medical supervision and medical insurance carrier in time.
It is understood that the nutrition support team of China Astronaut Center carefully prepared the astronauts' first meal after returning to Earth, which met the requirements of dietary nutrition collocation and the characteristics of early adaptation after landing, and fully considered the personal tastes and preferences of the three astronauts.
The test of God XIV's return to search and rescue mission;
First, it is difficult to find the target in the night search.
The search and rescue mission of astronauts is mainly helicopter troops. At night, the return cabin can't be seen by naked eyes, so we can only find the return cabin with the help of low light and infrared optical equipment.
Second, it is difficult to reach the landing site at night.
The best terrain condition of the Dongfeng landing site is the western region, which looks like a flat Gobi. In fact, there are many dry Haloxylon ammodendron trees, high-voltage transmission lines, low buildings, barbed wire and uneven ground, which pose a great threat to helicopter landing at night. The western Gobi landform is dominated by coarse sand and gravel. When the helicopter landed, the dust rolled up by the rotor blocked the pilot's line of sight, and the helicopter basically landed blindly. Rough sand and gravel are easy to cause helicopter failure, and the landing process is very risky.