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On November 17, the crew of Shenzhou 14 carried out the third out-of-vehicle activity, which mainly included the installation of the inter-cabin connection device, the elevation of the external panoramic camera, and the adjustment of external tools, and it was necessary to re-enter the cabin on the small mechanical arm. Install a booster handle. This is the first time that my country has used two robotic arms to support out-of-vehicle activities. This time, the extra-vehicle operation is more complex and fine-grained! Custom fabrication service 5 axis machining uk
▍Double-arm space “handshake” to support astronauts walking outside the cabin
After about 5.5 hours of out-of-vehicle activities, astronauts Chen Dong and Cai Xuzhe have safely returned to the Wentian experimental module of the space station, and the out-of-vehicle activities have been a complete success. The small robotic arm jointly developed by the team of Academician Liu Hong and Professor Xie Zongwu of the School of Mechanical and Electrical Engineering of Harbin Institute of Technology and the Changguang Institute of Chinese Academy of Sciences completed the first dual-arm combination to support astronauts out of the cabin.
In the combined arm state, the astronaut is on the end of the small robotic arm
The third outing of the Shenzhou 14 astronaut crew is the first outing after the completion of the space station’s “T”-shaped three-chamber configuration. In this mission, the small robotic arm was combined with the large robotic arm through a robotic arm adapter to realize electrical and information interconnection between the arms. After the “dual arms are integrated”, the entire robotic arm system has a larger range of motion and more degrees of freedom of operation, realizing a wider range of rapid transfer of astronauts and further improving the efficiency of astronauts’ extravehicular work. Custom fabrication service 5 axis machining uk
my country’s first use of two robotic arms to support out-of-cabin activities
This is the first time that the ability of the astronauts to work with the combined robotic arm has been tested, and the functional performance of the airlock of the Wentian Experimental Module and related support equipment for the extra-cabin activities has been further verified. At the same time, the in-orbit “handshake” of the two arms provides strong support for the follow-up combination of the two arms to complete difficult and diverse tasks, meets the needs of cross-cabin sections and the needs of fine operations in a wide range of different positions on the entire space station, and effectively guarantees my country’s space station construction tasks in orbit Done successfully.
double arm combination process
In the future, with the combined arm function, the small robotic arm can be transferred from the Wentian capsule to the Mengtian capsule, realizing the cross-chamber transfer of the small robotic arm, and laying the foundation for the subsequent single-arm operation tasks of the small robotic arm on the Mengtian capsule. The dual robotic arm system can directly grab the cargo from the open cargo compartment of the Tianzhou cargo spacecraft, and transport it to the exposed load hanging point outside the experimental cabin for installation, thereby realizing “cross-cabin cargo handling”. After the Tiangong space station completes the in-orbit assembly task, the solar wing of the Tianhe core module will be transferred to the truss of the experimental module for installation in order to solve the problem of light shading. At that time, the double-arm cascading combination function may also be used. Custom fabrication service 5 axis machining uk
▍Astronauts build a “skybridge” in space
The crew of Shenzhou 14 successfully completed the third out-of-vehicle mission, and the Fifth Academy of Aerospace Science and Technology Group fully supported the smooth progress of this out-of-vehicle activity. The scope of the astronauts’ out-of-vehicle activities has been expanded from a single cabin to three cabins. In order to make it easier for the astronauts to crawl across the cabin, a cabin connecting device will be installed between the Wentian experimental module and the Tianhe core module, and between the Mengtian experimental module and the Tianhe core module. For “Flyover”.
The connecting device of the Wentian experimental cabin is about 3.2 meters long and weighs 16 kilograms; the connecting device of the Mengtian experimental cabin is about 2.6 meters long and weighs 15 kilograms. Astronauts connect one end of it to the base of the connection device of the experimental cabin, and the other end to the circular handrail of the sky and core cabin. After the installation is completed, the astronauts can crawl from the experiment cabin to the sky and the core cabin without the need to A temporary bridge is built by a robotic arm. In addition, the astronauts also unlocked the panoramic camera on the Wentian experimental module, and raised the camera up by about 210 mm, so that it can look down on the external environment of the entire third module and have a wider field of view.
During the process of leaving the cabin, the measurement, control and communication subsystem builds a smooth communication link between the sky and the earth, transmits high-definition images and conducts world-earth communication, etc.; Error; the instrumentation and lighting subsystems provide ambient lighting inside and outside the cabin and status display inside the cabin… The subsystems of the three cabins cooperate closely, realizing the coordination of the three cabins after the basic configuration of the space station “T” is assembled. Custom fabrication service 5 axis machining uk
▍”Ten years to build an arm” Escort space station
As an indispensable part of the overall system of the space station, the robotic arm has initially determined its functions at the beginning of the design, such as crawling, cabin repositioning, load operation, inspection, supporting astronauts out of the cabin and cargo transfer, etc.
“We have been researching the robotic arm since 2006. The whole process is very hard. There are very few reference materials, so we can only cross the river by feeling the stones.” Over the past few years, the robotic arm research and development team has successfully completed various tasks step by step from the principle prototype, engineering prototype, from the first prototype to the prototype, and then to the factory, launch, and in-orbit development. “Others say ‘ten years sharpen a sword’, we are ‘ten years forge an arm’.”
Today, the robotic arm of the space station has changed from a drawing to a reality, fully supporting astronauts’ extravehicular operations and ensuring the safety of the space station. In 2021, the large robotic arm will be launched with the sky and the core module, with a carrying capacity of up to 25 tons, known as the “Hercules” of the Chinese space station; high. Both have their own characteristics and complement each other. In this extravehicular mission, the large and small robotic arms were cascaded together to form a combined arm and played a key role. The reachable range of the robotic arm in the space station complex has greatly increased. Custom fabrication service 5 axis machining uk
▍Conclusion
Looking back at the development of my country’s aerospace industry, from the “Paris Coordination Committee” to the “Wassenaar Agreement”, from the “Cox Report” to the “Wolf Clause”… Some countries have deliberately imposed a strict blockade and embargo on my country in an attempt to Excluding China from the World Space Station Club is an attempt to stifle the Chinese people’s dream of exploring space.
“The key core technologies cannot be obtained, bought or negotiated.” Facts have eloquently proved that in the face of the long-term technological blockade by foreign countries, China’s aerospace industry has persisted in independent development and independent innovation. The road to aerospace power. The great practice of China’s aerospace industry has created the manned spaceflight spirit of “special ability to endure hardship, special ability to fight, special ability to tackle key problems, and special ability to contribute”, drawing a bright trajectory of the Chinese spirit.
The construction of China’s space station and the establishment of a national space laboratory are important goals for realizing the “three-step” strategy of the manned spaceflight project, and an important symbol of building a space power and a science and technology power. It is precisely with the enthusiasm of looking up at the starry sky and down-to-earth work that Chinese astronauts have turned every dream of China’s aerospace industry into reality bit by bit. On the new journey of building a socialist modern country in an all-round way, when the Chinese space station is about to be completed, we believe that China Aerospace will bring more surprises. Custom fabrication service 5 axis machining uk