Shulou(Shulou.com)11/24 Report--

CTOnews.com, September 17, according to the China manned Space Engineering Office, the Shenzhou 14 astronauts will choose the opportunity to carry out the second extravehicular activity.

During the period when the Shenzhou 14 astronauts were preparing for their second excursion, the Chinese space station completed the cascade test of the large manipulator and the small manipulator, which fully verified the follow-up extravehicular work of the robotic arm assembly.

Before the Shenzhou 14 astronauts left the cabin for the second time, the large and small robotic arms had been separated and returned to their respective positions, and the small robotic arms were restored to the weather lock module to once again assist the astronauts in carrying out extravehicular activities.

The length of the large robotic arm carried by the Chinese space station is about 10 meters, and the length of the small robotic arm is about 5 meters. The range of movement of the cascaded assembly has been greatly increased. In the future application of the space station, the robotic arm assembly can carry out large-scale inter-cabin transfer, cabin inspection, cargo handling and so on.

The robotic arm in the core module of the space station has seven joints, which means it has seven degrees of freedom. The manipulator is divided into two parts: the forearm and the forearm, which adopts the configuration scheme of "shoulder 3 + elbow 1 + wrist 3", and the end part is called "end effector". It can be realized that the manipulator can crawl independently on the surface of the space station.

The two ends of the manipulator have multiple sensors and a vision system. Through the internal central controller, the action plan can be made automatically and the action can be completed accurately. The robotic arm can be analyzed independently, or it can be remotely controlled by astronauts. The visual surveillance system is embodied in that there is a visual camera on the shoulder, wrist and elbow of the manipulator, in which the shoulder and wrist visual cameras can monitor the extravehicular state and check the cabin table state. in case the space debris may impact on the experimental load exposed outside the cabin. Therefore, through the crawling of the robotic arm on the surface of the cabin, combined with visual camera monitoring, it is like a large selfie stick stretched out from the space station, realizing 360-degree full coverage without dead angle monitoring. it is very ingenious to realize the inspection function of the extravehicular equipment of the space station.

The robotic arm on the core module of the Chinese space station is the most intelligent, difficult and complex space intelligent manufacturing system in China, and it is the most true restoration of the human arm. All the core components are localized.

CTOnews.com learned that the Shenzhou-14 manned spacecraft was successfully launched on June 5. Since then, three astronauts, Chen Dong, Liu Yang and Cai Xuzhe, have launched a six-month mission. Since entering the assembly of the space station, the Shenzhou 14 astronauts have successively completed the material transfer of the cargo spacecraft, the on-orbit testing of the platform of the space module, the unlocking and testing of the scientific experiment cabinet, the unlocking and on-orbit testing of the small robotic arm, and the management of the assembly of the space station. carried out on-orbit medical inspection, weightlessness protection exercise, space science practice (test) and other daily work On-orbit emergency evacuation drills, small robotic arm operation, medical rescue drills and other on-orbit training projects were carried out. 00:33 on September 2, after about six hours of extravehicular activities, Shenzhou 14 astronauts Chen Dong, Liu Yang, and Cai Xuzhe closely coordinated to complete all the tasks set during the extravehicular activities, which were a complete success.

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