The small mechanical arm mounted with Wentian, the first lab module of China's space station, has successfully completed in-orbit tests, according to the China Manned Space Agency (CMSA).With the support of the ground team, the small mechanical arm has completed a series of in-orbit function and performance tests. All indexes performed well, achieving expected results, said the CMSA.The weight and length of the small mechanical arm are about half that of the 10-meter-long large mechanical arm on the core module Tianhe. It is quite flexible and can perform operations with greater precision.The Shenzhou-14 crew will, for the first time, be aided by the small mechanical arm to carry out extravehicular activities.The small arm can also be held with the large arm to form a combined arm that is capable of performing extravehicular operations with greater accuracy at a larger range.China on July 24 launched the Wentian lab module, which consists of a work cabin, an airlock cabin and a resource cabin. The small mechanical arm mounted with Wentian, the first lab module of China's space station, has successfully completed in-orbit tests, according to the China Manned Space Agency (CMSA).With the support of the ground team, the small mechanical arm has completed a series of in-orbit function and performance tests. All indexes performed well, achieving expected results, said the CMSA.The weight and length of the small mechanical arm are about half that of the 10-meter-long large mechanical arm on the core module Tianhe. It is quite flexible and can perform operations with greater precision.The Shenzhou-14 crew will, for the first time, be aided by the small mechanical arm to carry out extravehicular activities.The small arm can also be held with the large arm to form a combined arm that is capable of performing extravehicular operations with greater accuracy at a larger range.China on July 24 launched the Wentian lab module, which consists of a work cabin, an airlock cabin and a resource cabin.