Original title: Flying Dream | "Building a Station for Application" Multiple Technology Breakthroughs and Achievements
CCTV News: "Building stations for application" is the starting point and foothold of building space stations in China. Since the construction of the Chinese space station, the astronaut crew has successfully carried out many extravehicular activities, carried out a number of scientific and technological experiments, and achieved a number of research results. How is the progress of the ongoing experiments?
Rice and Arabidopsis are thriving in the life ecology experiment cabinet of the China Space Station. Since the injection of nutrient solution at the end of July, rice and Arabidopsis have undergone germination, growth and entered the mature stage. In the payload operation and control hall of China's manned space flight, researchers are paying close attention to the growth and changes of plants.
Arabidopsis thaliana has been successful in studying the whole life cycle from seed to seed under microgravity. The scientific objective of this experiment is to further study how to improve quality and increase production. For rice, it is the first time in the world to complete the whole life cycle cultivation from seed to seed.
In addition, the containerless material test cabinet configured in Tianhe core cabin has completed more than 10 samples on orbit, successfully carried out scientific experiments such as high temperature containerless suspension, heating melting and solidification at above 2000 ℃, and obtained a large number of key scientific data. Up to now, three kinds of space experiment samples have returned to the ground with the Shenzhou spacecraft. The scientific research team of Shanghai Institute of Silicate, Chinese Academy of Sciences has conducted ground analysis and test on them, and has also made new discoveries.
Ni Jinqi, Shanghai Institute of Silicate, Chinese Academy of Sciences: We found that the oxygen atoms on the surface of the metal zirconium from the space station experiment are quite different from those on the ground, and this phenomenon usually only exists on special samples such as meteorites. So at present, we are also conducting further research with scientists in geochemistry and astrochemistry. We believe that this phenomenon may provide new research directions and ideas for the evolution of the solar system.
Fruitful! China Space Station Achieves Multiple Technical Breakthroughs
China's space station project has successfully completed the mission objectives of key technology verification and on orbit construction, during which a number of technological breakthroughs have been achieved.
Regenerative environmental control and life assurance technology has been fully verified
In the verification phase of key technologies of space station, China has comprehensively broken through the key technologies of space station construction, including the life and work support technologies of astronauts' long-term stay in orbit, regenerative environmental control and life support technologies. During the astronauts' on orbit period, the space station can meet the material metabolism needs of astronauts on orbit, realize the regeneration of oxygen in the cabin, the treatment of carbon dioxide and other human metabolites and the removal of harmful gases, realize the recycling of water resources, and greatly reduce the upward carrying capacity of oxygen, water and other consumables. The active temperature control fluid circuit, that is, the air conditioning system, is configured to ensure that the air temperature, humidity and operating temperature of instruments and equipment are within the appropriate range, so as to ensure the safety and comfort of residence.
Breakthrough in technology of large flexible battery wing driveable mechanism
Astronauts will stay for a long time, and a large number of scientific experiments and technical verification will be carried out on orbit, all of which need sufficient power as support. To this end, scientific and technological personnel have designed a new space "wing" for the space station - flexible solar array. Compared with the traditional solar array, the thickness of the flexible solar wing veneer is less than 1mm, and the weight per unit area is only half of that of the traditional solar array, which can not only be repeated, but also double the power generation capacity, and greatly extend the life of the spacecraft.
The functional performance of the manipulator is better than the design
In addition, a series of technologies, such as the auxiliary cabin segment transposition technology of the manipulator, and the control of large assembly, have made breakthroughs. The manipulator has played an important role in many key tasks, such as astronaut exit, transposition cargo spacecraft, experimental cabin, and extravehicular state inspection. Its joint movement ability, end positioning accuracy, and other functional performances meet the design expectations, The stiffness characteristics of the manipulator operating load indicate that the manipulator has the ability to perform heavy load transfer tasks. After evaluation, the results meet the expectations, and the current functional performance is better than the design.
Construction of on orbit flight control management system of space station
Since entering the space station stage, the mission implementation has entered the high-density stage. The organization and command system of all participating research and test systems has been further improved, breaking through a series of flight control technologies such as rapid rendezvous and docking, evacuation and return, automatic mission planning, precise orbit determination and prediction of spacecraft with complex configurations, and teleoperation control of robotic arms, and building a flight control system platform with stable industrial operation nationwide, A complete set of on orbit flight control management system of space station with Chinese characteristics has been constructed.
The space application system has achieved fruitful results
The newly developed payload of the space application system works stably and in good condition in orbit, and the new generation of space application mission integration system scheme has been verified. For the first time in China, a highly reliable and wide bandwidth optical fiber communication network based on advanced communication protocols has been realized on orbit, and facilities such as containerless material experiment cabinet, high and micro gravity science experiment cabinet and other facilities have reached the world's advanced level. It is the first time to obtain the telescience experiment capability with a round trip delay of more than 2 seconds, which can efficiently support on orbit scientific experiments.
Precise implementation of monitoring and control, and stable response to space security risks
In the future, China's space station and astronauts will continue to fly in orbit for a long time. To this end, a complete ground verification system has been established, and the space station has been accurately and effectively monitored through the land sea space-based TT&C network dominated by relay satellites. At the same time, the monitoring and early warning of space environment, space target collision and other situations have been strengthened, and the manned spacecraft emergency launch mechanism and astronaut emergency return search and rescue mechanism have been established, Several measures have been taken to ensure the stable operation of the space station and the safety of astronauts in orbit.
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