Manned spaceship usually consists of reentry capsule, orbital module, service module, ducking module and emergency lifesaving system. The spaceship used for moon landing also has a lunar module. Reentry capsule is not only the major part of a manned spaceship, which is used to accommodate astronauts during ascending and reentry into space, but also the control center of the whole spaceship. It must endure various stress and environmental conditions in the process of launching, ascending in the atmosphere and operating on the orbit like other modules. Also, it must endure speed-down overloads and aerodynamic thermal loads during reentry into atmosphere and land on the earth. Orbital module is the working place of astronauts on orbit,where there are diversified experimental instruments and equipment. Service module usually installs propulsion system, power supply and gas source and provides service support for the spaceship. Docking module is used for docking with space station or other spacecrafts. Besides the docking and locking mechanism, it also has an air break cabin through which the astronaut enters space.
Emergency lifesaving systems can ensure the astronauts to land safely in an emergency, or transfer to the other spacecraft. It is also the major part of a manned spaceship. To ensure people can access to space and return to the earth safely, the manned spaceship includes the following major sub-systems: 1.structure system ;2.attitude control system;3.orbit control system;4.wireless telemetry and control system;5.power supply system;6.reentry and landing system;7.life support system;8.instrument illumination system;9.emergency lifesaving system.