They will carry out extravehicular activities (EVAs), install extravehicular payloads and conduct space station maintenance and other tasks, said Lin Xiqiang, deputy director of the CMSA.
The Shenzhou-17 astronauts will do extravehicular experimental maintenance for the first time, which is a very challenging task, Lin added.
With space debris increasing, their impact on long-term operating spacecraft is inevitable, Lin said. "Through preliminary inspections, we have found that the solar wings of the space station had been hit by tiny space particles several times, causing minor damages."
"Of course, we already took this into consideration in the design stage. At present, all functionality and performance indicators of the space station meet requirements," he added.
Lin said extravehicular experimental maintenance is geared towards the long-term operation of the space station and the verification of its technical capabilities.
The astronauts will also continue to assess the functioning and performance of the space station and test the coordination and compatibility of ground support centers in performing space station operation and management tasks, to further enhance the operating efficiency and fault correction capability of the space station, he said.
The Shenzhou-17 crew consisting of Tang Hongbo, Tang Shengjie and Jiang Xinlin, will take over from the in-orbit Shenzhou-16 crew, and will spend about six months on the space station, Lin said.
According to the official, the Shenzhou-16 mission has progressed smoothly. Its crew has carried out a total of 70 space experiments in areas such as aerospace medicine, life ecology, biotechnology, materials science, fluid physics and others, as well as eight research efforts on human-factors engineering.
The Shenzhou-16 crew also once performed an EVA, delivered a lecture from the space station, and assisted with the separation of the Tianzhou-5 cargo craft from the space station combination during their stay in orbit, he added.
Source: Xinhua News Agency
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