On the 18th January 2023 screening on 1955 hours Beijing time on CCTV China Central Television, CMG-China Media Group in partnership with CNSA China National Space Administration is a New Space Documentary in which is the Romance of Chinese Takionauts, space engineers, and those whom work with the Chinese Space Industry. In when Ice and Fire meet in the deep space of the universe.. The Premise, when the collision of ice and fire blooms in the deep space of the universe the technological romance of China’s Aerospace industry will be staged.
You’re are invited to王冰冰 Wang Bingbing commentary narration on the Documentary Wang Bingbing calls you to watch Documentary Wonderful China… Open the warm world of humanities from the perspective of fairy tales, and listen to Wang Bingbing 吃花椒的喵酱telling new stories about Chinese science and technology that are both hardcore romance and full of fairytale texture. From January 11th to 20th….
Wang Bingbing, born in Changchun City, Jilin Province in 1990, is a reporter, host, and up master from Mainland China, and graduated from Jilin University with a major in broadcasting .
In 2012, entered Jilin Daily ‘s ” City Evening News ” as an intern . In 2016, he joined China Central Radio and Television . In 2019, served as an interview reporter at the Jilin branch of the “2019 China Central Radio and Television Spring Festival Gala”. On February 28, 2021, won the 21st place in the ” 2020 Weibo Night Hot People List of the Year”; from June 2, She acted as the dubber for the military documentary ” Recruiters Please Enter ” produced by CCTV ; on August 5, participated in The new youth life sharing variety show ” Hello Life Season 3 ” produced by CCTV was broadcast ; on August 13, participated in the anchor new media talent show ” Yangyoung Summer ” launched by CCTV Broadcast ; On August 14, the CCTV variety show “2021 China Central Radio and Television Qixi Gala” hosted by China Central Radio and Television was broadcast ; In December, released the song “To the Distance ” with Wang Junkai . 2022On January 21, Bilibili won the Newcomer Award at the 2021 Top 100 UP Main Ceremony. On January 25, on the stage of ” China Central Radio and Television 2022 Internet Spring Festival Gala ” and Xia Ri Invasion Project jointly sang the song ” Want to Go to the Beach ” . On February 7th, participated in the broadcast of ” Kaigong Xiyang young ” produced by CCTV…
This story is so hot! When Ice and Fire meet in the depths of the universe It is one of the most efficient rocket engines in the world. The temperature of the combustion chamber of a rocket engine is as high as 3500 degrees Celsius, while the boiling points of liquid hydrogen fuel and combustion oxidizer liquid oxygen are minus 253 degrees Celsius and minus 183 degrees Celsius, respectively. How can these two low-temperature fuels be injected into the high-temperature combustion chamber instantly? Facing the challenge, the astronauts of the Sixth Academy of China Aerospace Science and Engineering have overcome this one of the most secret technologies in the world. Click on the video, 音乐奇迹中国 Listen to the rocket engines “Song of Ice and Fire”.
It is one of the most efficient rocket engines in the world. The temperature of the combustion chamber of a rocket engine is as high as 3500 degrees Celsius, while the boiling points of liquid hydrogen fuel and combustion oxidizer liquid oxygen are minus 253 degrees Celsius and minus 183 degrees Celsius, respectively.
How can these two low-temperature fuels be injected into the high-temperature combustion chamber instantly? Facing the challenge, the Takionauts Space Engineers of the Sixth Academy of Aerospace Science and Technology Group have overcome this one of the most secret technologies in the world.
On the 31st October 2022CNSA –China National Space Administration The Mengtian The launch of the Mengtian experimental module is imminent successfully launched on At 15:37 Hours on October 31, 2022, Beijing time, the Chang Zheng Long March 5B Yao-4 carrier rocket carrying the Tiangong China Space Station Mengtian Experimental Module was launched in Wenchang Spacecraft Launch Center-Hainan Province, China People’s Republic of China . The field was ignited and launched on time. About 8 minutes later, the Mengtian experimental module was successfully separated from the rocket and accurately entered the predetermined orbit. The launch mission was a complete success.
This is the 25th flight mission since the establishment of my country’s manned space project, and the 446th flight of the Long March series of carrier rockets.
The China Space Station Mengtian Experiment Module and the space station combination completed the rendezvous and docking in orbit After the space station Mengtian Experiment Module was launched into orbit, at 4:27 on November 1st Tuesday, 2022 Hong Kong SAR- Beijing time, it was successfully docked in front of the Tianhe core module To the port, the entire rendezvous and docking process lasted about 13 hours. In the follow-up, the relocation of the Mengtian experimental module will be implemented as planned. The Mengtian experimental module will form the basic configuration combination of the “T” shape of the space station with the Tianhe core module and the Wentian experimental module.
The Mengtian experimental module is expected to be repositioned on November 3. After the relocation is completed, it will form a “T” basic configuration combination of the space station with the Tianhe core module and the Wentian experimental module.
In the follow-up, the Mengtian experimental module will rendezvous and dock with the space station assembly according to the predetermined procedure. After completing the relevant functional tests, the Mengtian experimental cabin will be repositioned as planned. The Shenzhou 14 astronaut crew is ready to welcome the visit of the Mengtian experimental module.
The Mengtian experimental cabin is the third section of the Chinese space station and the second scientific experimental cabin. It consists of a working cabin, a load cabin, a cargo airlock cabin and a resource cabin. The take-off weight is about 23 tons. It is mainly used for space science and Applying experiments, participating in the management of the space station assembly; the cargo airlock can support the automatic entry and exit of cargo, and provide support for scientific experiments inside and outside the cabin.
In the follow-up, the Mengtian experimental module will rendezvous and dock with the space station assembly according to the predetermined procedure. After completing the relevant functional tests, the Mengtian experimental cabin will be repositioned as planned. The Shenzhou 14 astronaut crew is ready to welcome the visit of the Mengtian experimental module.
The Mengtian experimental cabin is equipped with a cargo airlock and an outboard deployment test platform. In the future, the scientific test equipment that needs to be installed outside the cabin can be transported to the space station through a cargo spacecraft, and then the load will be sent to the outside of the cabin through the cargo airlock, and the robotic arm or astronaut will install it on the platform outside the cabin. Realize the continuous update of the extravehicular test project.
The combination of the Mengtian experimental module and the Long March 5B Yao-4 carrier rocket is transported to the launch area
Decoding Mengtian The Mengtian The launch of the Mengtian experimental module is imminent. The official platform of China’s manned spaceflight has specially launched a series of popular science articles “Decoding Mengtian” to introduce the Mengtian experimental module to everyone. You are welcome to comment in the WeChat message area and ” Manned Space Small Speaker ” Weibo Leave your questions about the Mengtian experimental cabin in the area , let’s explore Mengtian together! The content of the first issue lets us learn about the exclusive “car” of the Mengtian experimental cabin – the Long March 5B carrier rocket .
On October 25, 2022, the Chang Zheng Long March 5B Yao-4 carrier rocket carrying the Mengtian experimental module of the space station was stably transferred to the launch area. Two years ago, the “Chang 5 B” stunned the sky with its perfect first flight, ushered in a “good start” for the implementation of the “third step” development strategic mission of the manned space project, and opened the prelude to the space station phase of the mission, and then sent ” “Tianhe” and “Ask Tian” successfully entered the orbit. As for how to become the backbone of the space station construction, “Chang Zheng 5 B” has given the best answer…
After ten years of grinding an “arrow”, it took off all over the world
The Long March 5B carrier rocket is a large-scale liquid carrier rocket developed in accordance with the requirements of the space station project and to meet the launch mission of the space station compartment. From project approval to first flight, the Long March 5B carrier rocket has gone through nearly ten years of development.
In November 2011, the Long March 5B carrier rocket was officially approved for project approval to undertake the task of launching the space station section. The review was transferred to the initial sample development stage; in November 2018, the Long March 5B carrier rocket was transferred to the sample development stage; in January 2020, the Long March 5B Yaoyi carrier rocket passed the factory review, and the first flight mission load was new The first-generation manned spacecraft test ship and the flexible inflatable cargo return cabin test cabin; in May 2020, the Long March 5B Yaoyi carrier rocket was ignited at the Wenchang Space Launch Site, carrying the first flight payload and successfully entered the predetermined orbit, the first flight mission It was a complete success, and the first flight mission in the space station phase was successfully achieved.
The first mission of the Long March 5B carrier rocket
It takes ten years to grind an “arrow”, and it is heard all over the world. As a new type of carrier rocket specially developed for the construction of manned space engineering space station, the carrying capacity of “Chang 5 B” is the largest among rockets currently in service in my country, with a carrying capacity of 25 tons in low-Earth orbit. The space station module of more than 20 tons was launched into orbit. The successful maiden flight of the “Chang 5 B” marks that my country’s launch vehicle’s low-Earth orbit carrying capacity ranks among the top in the world, laying a solid foundation for the smooth implementation of the follow-up tasks of my country’s space station project.
A number of “black technologies” to create an exclusive “car” for the cabin
The Long March 5B carrier rocket has carried out a number of technological breakthroughs and innovations, and a number of pioneering “black technologies” have created “exclusive vehicles” for the space station cabin.
01 Oversized fairing, more than big
The Long March 5B launch vehicle has the longest and largest fairing in my country at present, with a length of 20.5 meters, a diameter of 5.2 meters, and a volume of more than 345 cubic meters. Such a spacious space is also tailored for the launch of the space station module. In addition, in order to improve the aerodynamic characteristics, the rocket fairing adopts a streamlined Von Karman curve shape, which can better reduce air resistance and reduce the impact of load; at the same time, a rotary separation scheme is adopted for the separation of the fairing to ensure that the super-large fairing is safe and reliable. separation.
Long March 5B launch vehicle fairing
02 “Zero window” launch, every minute and second is accurate
The space station rendezvous and docking mission put forward the requirement of “zero window” launch for the Long March 5B rocket, and the launch time accuracy error should be controlled within 1 second, which requires the rocket systems to prepare in advance and wait for ignition. As an “ice rocket” using low-temperature propellants such as liquid hydrogen and liquid oxygen, the “zero window” launch of the Long March 5B carrier rocket needs to comprehensively weigh the “advance amount” of launch preparation and the “consumption” of low-temperature propellant “evaporation” “relationship. To this end, the developers have improved the reliability of key systems through reliability analysis and testing, and improved the adaptability of each system to the “zero window” launch through the optimization of the pre-launch process, creating the “zero window” launch of low-temperature launch vehicles in my country. precedent.
03 The large-diameter cabin arrows are separated, and the “softness” is used to overcome the rigidity
The diameter of the connection interface between the space station cabin and the Long March 5B carrier rocket exceeds 4 meters. The separation of the cabin and the arrow needs to consider factors such as reliability and impact environment. Adverse effects such as shock to the environment are minimized. Therefore, the rocket adopts the shock reduction scheme of “double isolation frame + damping box”, and applies “particle damping technology”. “Particle damping technology” is a new type of passive vibration control technology. It forms a coupled, closed nonlinear system through particles and dampers. It rapidly dissipates kinetic energy by means of friction and inelastic collisions to achieve the effect of vibration reduction and noise reduction. , so that the space station cabin can feel the “tenderness” of the rocket during the “getting off” process.
04 Directly into orbit with high thrust, in one step
The Long March 5B carrier rocket adopts a one-stage and a half configuration, consisting of a core-stage + booster + canopy combination, so there is no separate attitude adjustment and terminal speed correction system, but the first-stage rocket is used to directly transfer the payload. into the predetermined orbit. When the first-stage engine is shut down, the thrust of about 140 tons disappears within a few seconds, which is equivalent to a sudden “brake” of a high-speed train, and it needs to stop firmly at the designated position. By adopting the attitude control gain optimization and compound guidance method, the developers improved the rocket attitude control accuracy, reduced the influence of guidance error on the accuracy, and made the rocket in the best “attitude” and the most accurate position when separating. At the same time, two reverse thrust rockets have been added, so that the first-stage arrow body of the rocket can avoid the orbital surface of the space station cabin in time, which improves the safety margin of the separation of the cabin and the arrow.
The Long March 5B carrier rocket is not only safe, reliable and capable, but also can customize different “cabins” for different “passengers”. This customized design allows the rocket to better adapt to the spacecraft, so that the spacecraft can operate in Install more loads in limited space to achieve maximum capacity. The Long March 5B Yao-4 carrier rocket launched this time has been customized according to the shape and weight of the Mengtian experimental cabin. In order to meet the working requirements of the Mengtian capsule and the rocket in the launch area, the opening of the operation port is specially designed on the rocket fairing; in order to meet the needs of wireless communication in the ascending section of the Mengtian experimental module, the rocket fairing is also specially designed. The corresponding wave-transmitting port of the fairing was designed; in terms of orbit, the orbit design and the detailed evaluation of the orbit entry accuracy were also carried out to meet the requirements of the Mengtian experimental cabin.
Understanding a set of numbers # Mengtian Experiment Module# ] What are the characteristics of the Mengtian Experiment Module, one of the three modules that make up the basic configuration of the Chinese space station? What tasks will be undertaken in the future? Questions about the Mengtian experimental cabin, the official answer for you! With the launch of the Mengtian experimental module into orbit, the rendezvous and docking with the Tianhe core module and the completion of the transposition, the Chinese space station will form a three-cabin “T” basic configuration. The journey is long and courageous, and the dream comes true. The next stop, Tiangong Space Station, let us look forward to it together…
On the 9th October 2022 clear sunny day at CNSA –China National Space Administration At Wenchang Space Launch Centre – Hainan Province China, People’s Republic of China….. Space Station Mengtian Experiment Module completes propellant refilling According to the China Manned Space Engineering Office, on October 9th 2022, the space station Mengtian Experiment Module completed propellant refilling as planned. Since the Mengtian experimental module arrived at the Wenchang space launch site, it has completed the final assembly and testing of the technical area, and will carry out a joint inspection of system functions together with the Chang Zheng Long March 5B Yao-4 Carrier Rocket launch vehicle. At present, the facilities and equipment of the Wenchang Space Launch Site are in good condition, and the systems participating in the test are undergoing mission preparations in an orderly manner
The Mengtian experimental cabin is equipped with a cargo airlock and an outboard deployment test platform. In the future, the scientific test equipment that needs to be installed outside the cabin can be transported to the space station through a cargo spacecraft, and then the load will be sent to the outside of the cabin through the cargo airlock, and the robotic arm or astronaut will install it on the platform outside the cabin. Realize the continuous update of the extravehicular test project.
On the 25th October 2022 Morning Hong Kong SAR – Beijing Time the Mengtian capsule and the Chang Zheng – Long March 5b Yao 4 Carrier Rocket combination is being transported vertically….This morning, the Mengtian experimental module and the Long March 5B Yao-4 carrier rocket combination were vertically transported at the Wenchang Space Launch Site in Hainan province. The assembly starts from the vertical test workshop, and under the support of the movable platform, it moves steadily toward the launch tower along the nearly 3-kilometer-long dedicated track. The vertical transfer is expected to last more than 2 hours…. the Mengtian experimental module of the Chinese space station will be launched at the Wenchang space launch site in Hainan this month of October 2022..
According to the China Manned Space Engineering Office, today, the Mengtian Experiment Cabin and the Long March 5B Yao-4 carrier rocket assembly have been transferred to the launch area. In the follow-up, various functional inspections and joint tests before launch will be carried out as planned, and the launch is planned to be carried out in the near future on the October 2022 launch calendar.. in which following to the transfer to the launch complex it’ll In the follow-up, various functional inspections and joint tests before launch will be carried out as planned, and the launch is planned launching At present, the facilities and equipment of the Wenchang Space Launch Site are in good condition, and all participating units are stepping up their mission preparations and go all out to ensure a decisive victory in the construction of the Tiangong China Space station
More than One year ago on 24th November 2020, the Chang Zheng – Long March Five Carrier Rocket Launched away in CNSA – China National Space Administration China Wenchang spaceport launch, Change Five Lunar probe into orbit, opened up towards China – People’s Republic of China’s first celestial bodies sample return trip from Mons Rumker on the Lunar Surface of the moon New research achievements – Chinese scientists reveal the composition of lunar soil minerals and space wind at the landing site of Chang’e 5
This is a schematic diagram of the magma and thermal evolution of the moon in different periods (drawn on October 20, 2022). Published by Xinhua News Agency (Photo courtesy of Institute of Geology and Geophysics, Chinese Academy of Sciences)
Chinese scientists have proposed a new model of lunar thermal evolution based on the study of the Chang’e 5 lunar soil, revealing a mystery that has plagued academia: why the moon still had volcanic activity 2 billion years ago.
According to Chen Yi, a researcher at the Institute of Geology and Geophysics of the Chinese Academy of Sciences, the moon was formed about 4.5 billion years ago, and its mass is only about 1% of that of the earth. For such a small celestial body, in theory, it should cool rapidly and stop volcanoes very early. Activity and become a “dead” planet. The return of Chang’e-5 lunar soil samples has triggered a new round of lunar research upsurge. In October 2021, Chinese scientists published three articles in the journal “Nature”, revealing that lunar volcanic activity could last until 2 billion years ago, refreshing human understanding of the history of lunar magma activity and thermal evolution. According to experts, lunar basalt is a rock formed by the partial melting of the lunar mantle (equivalent to the earth’s mantle) through volcanic eruptions to the lunar surface to cool and crystallize. International scholars have put forward two hypotheses about the partial melting of the continuously cooling lunar mantle: one is that the heat generated by radioactive elements causes the lunar mantle to heat up; the other hypothesis is that if the water content is high, the melting point of the lunar mantle will be lowered. However, Chinese scientists’ research on the Chang’e-5 basalt revealed that the lunar mantle source region is not rich in radioactive heat-generating elements and is very “dry”, ruling out the above two hypotheses. Therefore, why the lunar volcanism has continued for so long has become an unsolved mystery in a new round of lunar research.
Yuan Jiangyan, an engineer at the Scanning Electron Microscopy and Electron Probe Laboratory of the Institute of Geology and Geophysics, Chinese Academy of Sciences, analyzes the composition of the Chang’e-5 lunar soil (photo taken on October 14, 2022). Published by Xinhua News Agency (Photo courtesy of Institute of Geology and Geophysics, Chinese Academy of Sciences)
In response to this problem, Chen Yi led the scientific research team to select 27 representative Chang’e 5 basalt cuttings, and used the newly developed scanning electron microscope energy spectrum quantitative scanning technology to analyze the main components of the whole rock cuttings, combined with a series of The petrological and thermodynamic simulation calculations have successfully recovered the initial magma composition of the Chang’e-5 basalt, and compared it with the initial magma of the Apollo samples to deduce their origin depth and temperature. The study found that the initial magma of the young Chang’e-5 basalt contained more calcium and titanium than the Apollo samples, suggesting that the mantle source region of the Chang’e-5 basalt had more additions of calcium-rich and titanium-rich materials. This part of the material is precisely the product of the late crystallization of the lunar magma ocean, and has the characteristics of being fusible. Its addition will significantly reduce the melting point of the lunar mantle and induce partial melting of the lunar mantle to form young lunar basalts. Further simulation results show that the moon’s interior has experienced continuous cooling for more than a billion years, and the temperature has only dropped by about 80 degrees Celsius.
Chen Yi said that this study shows that although the interior of the moon continues to cool slowly, the fusible components crystallized in the late lunar magma ocean are continuously added to the deep lunar mantle, which not only “supplements calcium and titanium” for the lunar mantle, but also lowers the lunar mantle. the melting point, thereby overcoming the slow cooling lunar interior environment and triggering long-lasting lunar volcanism.
