The Shenzhou 11 spacecraft returned to the Earth with two astronauts, Jing Haipeng and Chen Dong. During the return of the Shenzhou spacecraft, some of the cabins were abandoned and some of the cabins eventually returned to the ground. Why? What are the cabins of the Shenzhou spacecraft?
Since the first launch of the Shenzhou spacecraft in 1999, after five years of unmanned flight test and six manned flight tests, outboard activities, space rendezvous and docking, etc., the Shenzhou spacecraft has achieved a series of major events in China’s manned space flight. breakthrough. The various cabins of the Shenzhou spacecraft have played an irreplaceable role in all previous missions.
So, what are the cabins of the Shenzhou spacecraft? How to identify them?
The Shenzhou spacecraft has four sections, which are orbital, return, propulsion and additional sections.
Orbital cabin: "Home on the spaceship"
Located at the front of the spacecraft, it is a cylinder. One end of the orbital module is connected to the return compartment, and the other end can be docked with a space docking mechanism, such as the Tiangong No. 2. The cabin has pressurized valves and ground-observing portholes. It is the astronaut's living area, test area and storage area during the spacecraft's orbit. It is the "home" of astronauts on the Shenzhou spacecraft.
Thermal balance and venting pressure test of Shenzhou 7 orbital module
When the spacecraft returns, the orbital module will leave the main body of the spacecraft and remain in space as a small satellite to continue working for a period of time to provide scientific data to the ground personnel. This is also a major feature of the Shenzhou spacecraft, and foreign spacecraft, orbital and spacecraft are mostly abandoned after separation.
Return cabin: "down clock"
Located in the middle of the spacecraft, it has an inverted vertebral bell shape. Don't look at the return cabin's awkward shape. It is actually a section of the astronaut's launch and return. Its side wall has two windows that allow the astronauts to observe the scenery and facilitate the driving of the spacecraft.
In the middle is the return capsule of the Shenzhou spacecraft, and on the left is the orbital module.
Unlike other sections, the outer surface of the return capsule is covered with an ablative heat shield and is equipped with a main parachute and a backup parachute to effectively protect the cabin and astronauts during the return phase.
Propulsion cabin: "Angel wearing a skirt"
Located at the back of the spacecraft, it is shaped like a short-conical cylinder at the back end. It has a pair of sun wings on both sides and has an unfolded area of ​​12m2, like a little angel wearing a skirt. The interior of the propulsion bay is equipped with an orbiting engine that provides power to the spacecraft, allowing the spacecraft to freely adjust its flight attitude and flight path.
Spaceship propulsion cabin
Additional section: "Expansion of the spacecraft"
The additional section is also called the transition section. It is mainly used for testing and verification before docking with other spacecrafts, and it can also install other instruments for space detection. Moreover, starting from the Shenzhou VII spacecraft, the additional section was replaced by a formal rendezvous and docking agency.
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