The sky and core modules of the space station have multiple hatches of different sizes and shapes. When astronauts pass or leave the space station module, the hatch rotates along the hatch axis and is in a lateral open state. The process of passing through the hatch may scratch the sealing ring of the door body. Once the sealing ring is damaged, the door seal will be invalid, which may affect the living environment of astronauts. In order to protect the door sealing ring from being scratched, the team of the Fifth Academy of Aerospace Science and Technology specially developed the door protective cover. Although the hatch cover has a single function, it has the characteristics of simple operation, long product life and reusability, which puts forward high requirements for the use of the space station.

According to the two different working environments of engine room and engine room, two kinds of hatch protection covers are developed for the core engine room of space station, including engine room hatch protection cover and outer cabin deployable hatch protection cover. In order to facilitate the operation of astronauts, the engine room door protective cover in the engine room is a hood structure, just like the dust cover of the floor-standing electric fan. When in use, astronauts only need to open the mouth of the protective cover and put it on the door. ; The protective cover of the outer cabin door is a roller shutter structure. In use, astronauts only need? Catch? ,? Sleeves And then what? Pull? A few simple operation steps can be completed. Compared with traditional rigid and semi-rigid solar cell wings, the thickness of flexible wings is only one book, which is only115 of that of rigid solar cell wings. At the same time, it has a larger development area and a higher power-to-weight ratio. Only one wing is needed to provide 9KW power for the space station, which can not only meet the normal operation of all equipment in the cabin, but also give full play to the role of ensuring the daily life of astronauts in the space station.

The core engine room is the aircraft with the longest design life in China, which puts forward the highest requirements for the service life of all products. As a vehicle-mounted product, solar wing must face extremely harsh space environment. Besides experiencing 88 thousand? 100? In addition to the high and low temperature cycle of C, it must also withstand atomic oxygen, plasma, ultraviolet radiation and ionizing radiation in low orbit environment. Waiting for the space environment test. The development team of 805 flexible solar wings in the Eighth Institute of Aerospace Science and Technology Group has conducted scheme demonstration and comparison for more than three years, and accepted a large number of ground simulation long-life tests.

The tension mechanism on the solar wing looks like a simple wire rope, but it is actually a constant force spring rope system. Through its continuous expansion and contraction, it can ensure that the solar wing has sufficient stiffness and attitude control in high and low temperature environments. After years of research, the team completed 400,000 thermal vacuum fatigue life tests and 6,543.8+0,000 normal temperature and pressure life tests on the ground, which fully verified the high reliability and long life of the products.