Shenzhou 10 landed in Inner Mongolia.
In the morning, Shenzhou-10 will usher in the first15th flight in space, and three astronauts will leave Tiangong-1, China's space home, and return to Earth, returning home in triumph. According to the news from the Public Security Bureau of Baotou City, Inner Mongolia, after the Shenzhou-10 spacecraft lands in a predetermined area in the central and western Inner Mongolia Autonomous Region tomorrow, Baotou patrol special police will perform the task of guarding the landing site of Shenzhou-10.
Special police escort for "God Ten"
Baotou patrol special police will cooperate with the base staff to do a good job in security alert, astronaut escort and emergency response. In order to ensure the completion of the task, at present, the patrol special police detachment of the city has formulated a strict security plan, and every commander and special police team member have positioned themselves to ensure that they are familiar with the security work steps and command and dispatch in an orderly manner.
Baotou Patrol Special Police, who has carried out the security tasks for the landing sites of Shenzhou VIII and Shenzhou IX, will escort the landing of Shenzhou X this time.
The commander will take the first one out of the cabin.
Under normal circumstances, after the return capsule lands, there will be several helicopters equipped with Beidou navigation and positioning system independently developed by China to search and rescue astronauts, and the commander will be the first to leave the capsule.
After returning to Earth, the three astronauts will conduct preliminary medical examination and confirmation in the return capsule. Ground personnel also need to sample the gas and microorganisms in the return capsule and recycle some products. As the first crew member to enter the return capsule, we should not only confirm the astronauts' physiological and psychological state, but also help them to adapt to gravity, which is why it takes dozens of minutes from landing to opening the capsule. For example, the limbs should be properly exercised inside, and this kind of repeated training can accelerate the astronauts' gravity adaptation.
Astronauts will take off their pressure suits and put them on the ground after entering the helicopter. The staff will use portable equipment to inspect the astronauts and collect samples such as saliva. Astronauts will have their first meal on a special medical surveillance helicopter. Then the astronauts were transported to the airport by search and rescue helicopters and sent back to Beijing by special plane.
The return of the spacecraft goes through four stages.
One is the braking flight phase.
The spacecraft adjusted its attitude in space, the engine ignited and braked, and entered the return orbit.
The second is the free sliding stage.
The spacecraft descended freely in unpowered flight. When the altitude drops to 140 km from the ground, the propulsion module and the return module are separated, and the propulsion module burns when passing through the atmosphere, and the return module continues to descend.
The third is the reentry stage.
When the spacecraft enters the atmosphere, the friction between the spacecraft surface and the atmosphere generates huge heat, forming a high-temperature plasma gas layer on the spacecraft surface, shielding electromagnetic waves and forming a "black barrier", so that the spacecraft loses contact with the ground within 240 seconds. It was not until about 40 kilometers away from the earth that the "black barrier" disappeared and the ground monitoring and control department regained the spacecraft.
The fourth is the landing stage.
When the return capsule is about 10 km away from the earth, open the cockpit cover and continue to open the guide umbrella, deceleration umbrella and main umbrella. At a distance of 1 .2m from the ground, ignite four thrust motors to make the spacecraft land at a speed of1to 2m per second.
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