Electro-flaming stones, booming, breaking the night of june。
On april 20, at 19:41Skyboat oneCargo shipOn board the long march 7 remote 2 rocket, it was successfully launched at the hainan wenchang space launch site. The success of china's first cargo ship meant that the chinese space laboratory mission had been called “the battle of capture”。
The mission of skyboat i, in addition to handing over to sky miya ii space laboratory for on-orbit testing and the implementation of propellants, is also one of the “grave plays” of the mission。
The cargo ship, not just the cargo
Since time immemorial, humankind has been filled with awe and a desire for the heavens, and has never stopped exploring and debating space。
“space activities, which my country refers to as the cause of space, include three main aspects of space science, space applications and space technology. Space science aims to explore new phenomena and discover new scientific patterns. Space technology had made space science and space applications possible, and space science and space applications, in turn, had contributed to advances in space technology and had become an inexhaustible engine for human space activities. "the chinese academy of sciences academy says。
On board is no exception to skyboat one. It is a fully sealed cargo ship consisting of cargo and propulsion compartments, which are not transported. The cargo load of skyboat i will be three times as large as that of the uav, which is at an internationally advanced level of functionality and performance。
The cargo transport system is the key technology that needs to be breached and mastered in order for china to complete the space station, and the ability to operate spacecraft resupply in orbit, refuelling propellants, etc., is an essential prerequisite for ensuring the long-term manned flight of the chinese space station in orbit in the future。
However, a number of “high-rise” space science experiments and technical validation experiments were also deployed on this unmanned cargo ship。
General skyboat i will conduct research on the effects of microgravity on cell multiplication and fragmentation, research on key technologies of the experimental platform of the two-phase system, key technology validation for the non-newton gravitational test, four scientific experimental studies for the validation of critical technology for active insulation and technical validation tests, involving 12 research institutes, including the institute of secondary education and five institutes of the academy of military medicine, and seven higher education institutions, including tsinghua university, zhejiang university, north-west industrial university, china university of science and technology and nakayama university。
Set a small target on skyboat one
None of the experiments in heaven was very sophisticated and required minimal disturbance。
The mission of the china-china centre for gravity, “key technical validation of non-newton gravitational experiments”, is a space-based physical experiment on newton's gravitational tests. A key technology at the core of this experiment is the electrostatic suspended accelerometer。
“the electrostatic suspended accelerometer is a very new accelerator technique at the international level, and only developed countries, such as france, currently possess this sophisticated technology and have a high degree of confidentiality for our country, which we can develop on our own.” “the use of electrostatic suspended accelerometers for space gravitational wave detection, etc., is of great scientific significance, according to professor wu shuchong of china
However, the accuracy of the experiment is affected by spacecraft vibrations. It needs a magical cradle to isolate all vibrations as far as possible。
"when we take a picture and shake our hands, the picture falls, and that's the same thing in the sky." dong wenbo, deputy researcher at the centre for space applications of the central academy of science and technology, said that although the spacecraft was in a microgravity environment, it caused many disturbances as a result of the movement of the spacecraft's trajectories, wind engines, ships and sails. “scientific experiments cannot achieve the effects of microgravity if they do not overcome these microturbations and lose the meaning of heavenly experiments.”
The insulation is divided between passive and active insulation, the former with a spring or a blocker, and the bicycle seat. However, this method of insulation is generally not sufficient to meet the high indicator requirements for insulation。
The active insulation developed by the space applications centre, on the other hand, is the use of magnetic suspension technology, the complete suspension of scientific payloads, the isolation of vibrations from spacecraft and the ability of controllers to be sensitive to external changes and to adjust in a timely manner. The experiment, which was the first to be implemented in the country, will lay the technological foundation for the development of the station's high-microgravity experimental platform。
On skyboat i, the active insulation system just provides a good experimental platform for the electrostatic suspended accelerometer. They are complementary and mutually supportive, becoming a close “brother”。
“astropic one is our small target, and our long-term goal is to develop technology for robust magnetic suspension active insulation, to service more space applications loads, such as space optical cameras, laser communication, etc., and to help them reach higher target levels and achieve higher scientific and technological results.” dong wenbo said, “if possible, our technology can also play a role in the aeroplane optic pods, ship resonance, industrial precision processing, and camera protection against tremors”
In addition, the evaporation and condensation experimental studies of fluids under microgravity conditions are carried out by the “key technology research for the experimental platform for two-phase systems” project, which is carried out by the central school of mechanics, which explores special patterns of thermal and mass transport of fluid interfaces with quality exchange in microgravity environments, studies the effects of gravitational change on the process of distillation of heat transfer between evaporation and condensation, and validates key technologies such as the supply of engineering for space experiments, gas/liquid separation, etc。
The researcher at the institute of mechanical sciences at the institute of middle school said that the project, initiated for the first time by our scientists, was expected to lead the country to a breakthrough in scientific results and experimental technologies in this field。
Human health pioneers
Experiments closely related to the health of human life were also arranged on skyboat 1。
The “microgravity impact study on cell growth and separatism” project will study the effects of environments such as microgravity on stem cell multiplication, reproductive cell separation and bone tissue cell function, including eight samples of mammalian cell samples for 30 days of cytogram and suspension culture in space. Eight research topics were included, bringing together the country's best scientific team. Research results can be used for the treatment of heart, liver diseases, organ transplants, reproductive health and the prevention and treatment of bone-changing diseases。
The ancients used to say that there was some scientific justification for that statement in the eyes of chen guoqiang, a professor at the university of qinghua, day after day. “the microgravity environment in space flight can induce a reduction in the skeletal load of astronauts, leading to loss of osteoporosis or even osteoporosis.”
Data show that astronauts lose, on average, 0. 5 to 2 per cent of their bones per month, especially with regard to femurs. Upon return to earth, the bone recovery period is 2-3 times longer than the flight time, or even less than full recovery。
Osteoporosis is one of the recognized signs of human ageing。
Unfortunately, osteoporosis, such as osteoporosis drugs, is not evident in the microgravity environment. It is therefore important to study and develop safe and effective anti osteoporosis drugs to reduce the loss of microgravity-induced osteoporosis。
A few years ago, one of the main components of the substance in mammals - 3-hydroxybutyric acid (3hb) - entered chen guoqiang's view. 3hb contributes to bone formation and contributes to the growth, separation and mineralization of osteocellular cells and inhibits the unusual activity of broken bones. Previous studies indicate that 3hb is expected to be developed as an anti osteoporosis drug。
Chen guoqiang said that this experiment on skyboat i would study for the first time the bone function of 3hb in a real space environment and compare it with a ground-based simulation of weightlessness. “in this way we can make a more accurate judgement and provide some new ideas and suggestions for the study methodology of future microgravity simulations.”
At the same time, another team at the university of tsinghua is trying to induce human embryonic stem cells to split into reproductive cells in space microgravity。
“we want through this experiment to map the basic patterns of reproductive cell development and maturity in space microgravity, explore molecular mechanisms of embryonic stem cell separation, thus providing the theoretical basis and technical support for overcoming the possible effects of the space environment on human reproduction, and provide new experimental models for embryonic stem cell fragmentation research, taking advantage of the special advantages of the space station environment.” kiyotaka, professor, university of tsinghua。
More importantly, the study will establish an in vitro separation system to study human reproductive cell development and overcome the limitations of human reproductive cell sampling in space reproduction research。
“research on human reproductive health under microgravity in space is at an early stage and research on stem cell separation mechanisms is just beginning.” through this cutting-edge research, kiaki looks forward to bringing new understandings about the effects of space life on human reproduction, improving fertility in space, achieving migration in space and giving birth to future generations in space。
