Long March 11, the first solid fuel rocket in China, was launched successfully on September 25, and the rocket is equipped with the No. 1 satellite of Pujiang developed by the Shanghai Aerospace Technology Research Institute and the No. 2 satellite of Shanghai Science and Technology No. 2 developed by the Shanghai Micro-satellite Engineering Center of the Chinese Academy of Sciences. Tiny satellites

The launch, while validating that China already has the ability to launch rockets quickly, has also tested a number of new technologies in satellite manufacturing, such as 3D printing.

Pujiang Satellite No. 1 equipped with 3D printing technology made of titanium alloy antenna, which is the first time in China. The application of new technology will be the production cycle from the original 4 months significantly reduced to 3 days - 1 day to complete the print molding, 2 days performance testing. And the performance indicators did not shrink.

In addition, Pujiang One also has innovation in wireless transmission and satellite platform.

Pujiang One has creatively introduced the concept of Wi-Fi wireless communications in the aerospace field. Through the interconnection of wireless technologies, the sensors on the spacecraft form an "Internet."

The wireless temperature sensor carried by Pujiang Satellite No. 1 is the first application of China's wireless sensor network technology in spacecraft. It can not only verify the performance of wireless sensor network technology in orbit, but also save energy, reduce weight and reduce protection and maintenance costs , And the follow-up spacecraft has a good demonstration of the role.

Pujiang one platform used is also called a must. It uses the standard structure of the rod, connector, bearing plate to form a satellite system of structures, according to the need to arbitrarily adjust the platform cabin and load compartment space. "It's like we bought IKEA furniture, can be based on the size of the room, use to assemble, to meet the needs of different loads, greatly improving the fitness of the satellite structure."

In addition, Pujiang One is also the first time using the "hot cutting" release technology, equipped with a micro-pump fluid circuit, memory alloy shutter, high performance digital signal processor, large capacity static memory, a new star sensor and a series of localization devices and ministries Components, which have a good support for the extensive application of new technologies in the future space and promote the autonomous controllable of key components and components of the space.

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