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At 6:00 pm on May 5, 2020, China's Long March 5B carrier rocket, carrying a new generation of manned spacecraft test ship and flexible inflatable cargo return cabin test cabin, ignited and lifted off from China's Wenchang Space Launch Site, successfully assembling the payload.
into the predetermined orbit
.
According to CCTV news, a "3D printer" was also carried on the new-generation manned spacecraft test ship.
This is China's first space 3D printing experiment, and it is also the first time in the world to carry out continuous fiber reinforced composite materials in space.
3D printing experiment
.
This time, a "composite material space 3D printing system" independently developed by China was carried on the test ship.
The researchers installed the "3D printer" in the return cabin of the test ship.
During the flight, the system independently completed continuous fibers.
The prototype printing of composite materials was enhanced, and the scientific experimental goal of composite 3D printing in microgravity environment was verified
.
The Long March 5B is improved and developed on the basis of the Long March 5 carrier rocket.
It mainly undertakes major space launch tasks such as the Chinese space station cabin
.
Carbon fiber composite materials help Long March 5B reduce weight by 400 kg
Carbon fiber composite materials help Long March 5B reduce weight by 400 kgIt is understood that continuous fiber reinforced composite materials are the main materials for the current spacecraft structures at home and abroad, with low density and high strength.
To carry out research on space 3D printing technology of composite materials, for the long-term operation of the future space station and the development of on-orbit manufacturing of super-large structures in space significant
.
According to the First Academy of China Aerospace Science and Technology Corporation, which is responsible for the overall development of the Long March 5B, the Long March 5B itself also uses carbon fiber composite materials to achieve "slimming"
.
Through the overall molding technology of the "three plus two" honeycomb sandwich structure of carbon fiber composite materials with large diameter and thickness, it is used in the molding of the wall plate and heat shield structure of the first-level tail section.
By using lightweight carbon fiber composite materials to combine The aluminum honeycomb sandwich structure scheme replaces the original scheme and achieves a weight reduction of about 400 kg
.
