CNSA –China National Space Administration…………… After Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, 2022, Beijing time, it was successfully connected to the forward port of 天和 Tianhe Core Module. The entire rendezvous and docking process lasted about 13 hours. . This is the first time that two 20-ton spacecraft in my country- China- People’s Republic of China have achieved rendezvous and docking in orbit. …According to the mission plan, the Shenzhou 14 Takionaut crew will then enter the Wentian experimental module….. In which finally docked in early morning time of the 25th July 2022 in with CNSA –Beijing Aerospace City in which co-ordinated the docking maneuverers have achieved rendezvous and docking in orbit.… in which the crew of the Shenzhou 14 staying for six months in construction of the stage one of the China Space station with the additional Mengtianexperimental module in which will be delivered on the October 2022 Launch Schedule calendar..
It’s the week of 24th August 2022, the first perspective of the robotic arm that everyone is looking forward to is here! The robotic arm has now completed the inspection of the space station, and has made sufficient preparations for the follow-up Wentian experimental cabin repositioning and combined arm testing. Use these three and a half minutes to immerse you in the blue and cloud seas from the perspective of the robotic arm… in which gives you an immersive view of the planet earth as inspects the Tiangong – China Space Station..
CNSA –China National Space Administration…………… After Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, 2022, Beijing time, it was successfully connected to the forward port of 天和 Tianhe Core Module. The entire rendezvous and docking process lasted about 13 hours. . This is the first time that two 20-ton spacecraft in my country- China- People’s Republic of China have achieved rendezvous and docking in orbit. …According to the mission plan, the Shenzhou 14 Takionaut crew will then enter the Wentian experimental module….. In which finally docked in early morning time of the 25th July 2022 in with CNSA –Beijing Aerospace City in which co-ordinated the docking maneuverers have achieved rendezvous and docking in orbit.… in which the crew of the Shenzhou 14 staying for six months in construction of the stage one of the China Space station with the additional Mengtianexperimental module in which will be delivered on the October 2022 Launch Schedule calendar..
At present, the Wentian experimental module is running stably in orbit, and the astronauts have completed the unlocking and installation of the scientific experimental cabinet in the Wentian capsule. In addition to the scientific experiment cabinet, the Wentian capsule is also equipped with two extravehicular detectors: a plasma in-situ imaging detector and an energetic particle detector , which will be installed on the extravehicular exposure platform as planned . Among them, the plasma in-situ imaging detector is the first scientific payload for space environment detection outside the space station in China . Today, the eighth chapter of “Ask the Sky” uses three questions to give you an in-depth understanding of the plasma in-situ imaging detector.
Its main functions include in -situ measurement of plasma electronic parameters, plasma ion parameters and the surface potential of the space station cabin, and 3D imaging detection of ions. Detect and measure the composition, density, temperature, velocity and surface potential of the space station orbital plasma, as well as the three-dimensional spatial distribution of the space station orbital plasma velocity and density.
Its main scientific and applied goals include:
ONE – Carry out orbital plasma in-situ detection and three-dimensional imaging detection of the space station, and accumulate scientific detection data.
TWO- Provide plasma monitoring data support for space station operation and application and test (experimental) missions, research on disturbance characteristics and evolution mechanism of the ionosphere in the middle and low latitudes, and improvement of the orbital ionosphere model of the space station.
THREE – Through the in-situ detection of plasma and the accumulation of long-term charging data, it provides data support for studying the charging effect of plasma on the space station, promoting the establishment of a charging evaluation system for the space station, and supporting the decision-making of the space station mission.
Q: What is the value? Scientific research value of plasma in situ imaging detector
A: The space station is my country’s long-term in-orbit space infrastructure and an important platform for my country to conduct various space science experiments (experiments). The space station has a 340~450km near-circular orbit with an orbital inclination of 42°~43°. Monitoring the space environment of the orbit of the space station is one of the important tasks to ensure the safety of manned spaceflight projects. At the same time, the long-term on-orbit detection of space environment elements can provide an important basis for studying the mechanism of the harm caused by the space environment to the space station and Takionauts, and can also provide necessary space environment parameters for the scientific experimental loads on the space station .
The main components of the plasma in situ imaging detector
The operating orbit of the space station is located in the peak height region of the ionospheric F2 layer, and the ionospheric plasma environment is the basic environment for the operation of the space station. This area has the highest plasma density, is the most concentrated area of various ionospheric physical phenomena and their effects, and also has the greatest impact on navigation and positioning signals. The space station is an ideal platform for in-situ detection and research of the Earth’s ionospheric plasma. It is also an ideal platform to study the interaction between plasma and space station .
A major advantage of monitoring the plasma environment in space station orbit is the long on-orbit time . The lifespan of ordinary satellites at the orbital altitude of the space station is short, which is not conducive to long-term monitoring of the ionospheric environment. Using the platform of the space station to conduct long-term in-situ detection of ionospheric plasma in the middle and low latitudes can be used to study the origin and evolution mechanism of the irregular structure of the ionosphere in the middle and low latitudes, so as to improve the accuracy of the ionospheric model and improve the reliability of the ionospheric model. Accuracy of navigation/positioning .
In addition, the space station is immersed in space plasma, which will interact with the plasma in various ways, causing charging of the space station, contamination and damage of surface materials, etc. Long-term in-situ detection and charging monitoring of on-orbit ionospheric plasma environment at the space station provides an important opportunity to study the interaction mechanism between the plasma environment and the space station and its impact on astronauts and the space station . one of the important jobs .
Therefore, the plasma in-situ imaging detector monitors the ionospheric plasma environment of the orbit of the space station, which can be used to study the mechanism and evolution process of the irregular structure of the ionosphere in the middle and low latitudes, improve the accuracy of the ionosphere model and the navigation/positioning accuracy, and also guarantee the carrier It is one of the important tasks for the safety of human aerospace engineering technology systems in orbit and the safety of astronauts’ extravehicular activities. The long-term monitoring of the elements of the ionospheric plasma environment also provides important data for the study of the mechanism of the effect of the ionospheric plasma environment on the space station and astronauts.
Q: How to apply? Extended application of plasma in situ imaging detector
Answer: The ion imager of the plasma in-situ imaging detector is the first application in China’s space field. It can image ions in the energy range of 0.1eV to 204eV in a 360°×94° annular field of view, and the imaging time resolution can be Up to 45ms, which is at the international advanced level . The ion imager of the plasma in-situ imaging detector can be applied to plasma detection in interplanetary space and deep space in the future .
The Langmuir probe and blocking potential analyzer of the plasma in-situ imaging detector, the Langmuir probe and blocking potential analyzer on my country’s Zhangheng-1 satellite and the Langmuir probe on Lutan-1 satellite It can carry out joint detection in orbit. The altitude of China’s space station is 340~450km, the orbital altitude of Zhangheng-1 satellite is about 500km, and the orbital altitude of Lutan-1 satellite is about 600km. Joint detection will enable more comprehensive detection of the global ionosphere.
In the future, astronauts will assemble and test the external interface of the plasma in-situ imaging detector in the cabin, and install it on the exposure platform outside the cabin. Let’s look forward to the “two blooms” inside and outside the on-orbit scientific experiment of Tiangong Space Station!
CNSA –China National Space Administration…………… After Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, 2022, Beijing time, it was successfully connected to the forward port of 天和 Tianhe Core Module. The entire rendezvous and docking process lasted about 13 hours. . This is the first time that two 20-ton spacecraft in my country- China- People’s Republic of China have achieved rendezvous and docking in orbit. …According to the mission plan, the Shenzhou 14 Takionaut crew will then enter the Wentian experimental module….. In which finally docked in early morning time of the 25th July 2022 in with CNSA –Beijing Aerospace City in which co-ordinated the docking maneuverers have achieved rendezvous and docking in orbit.… in which the crew of the Shenzhou 14 staying for six months in construction of the stage one of the China Space station with the additional Mengtianexperimental module in which will be delivered on the October 2022 Launch Schedule calendar..
”Buzz…” The tense technical seminar was suddenly interrupted by the sound of temporary renovations next door. The walls of the office are too thin, and it happens from time to time that it is affected by noise. Xiao Feng, who is reporting, takes several seconds to find his way of thinking.
At the end of the meeting, Xiao Feng rubbed his temples, the sound of “humming” seemed to be still circling in his mind, and his thoughts returned to the key technology of Tianhe core cabin noise reduction that the team had been working on for dozens of days——
The office is affected by noise, so you can go to a quiet place, but in the space station, if there is no comfortable and quiet environment, Takionauts may only wear earplugs to concentrate on work and rest.
“We must bite the hard bones and provide the astronauts with a quiet and comfortable home!” Xiao Feng said firmly.
Xiaofeng is from the Space Station Mechanics Test Team of the General Assembly and Environmental Engineering Department of the Fifth Academy of Aerospace Science and Technology Group. This aerospace scientific research team has been committed to the field of mechanical testing technology for more than 30 years, and has grown in tandem with the development of manned spaceflight. With the continuous growth of the construction of the space station, it has realized the transformation of aerospace mechanical testing equipment from the introduction to the independent construction, and the acoustic test. From independent to international, the test efficiency and test capacity have been greatly improved.
Xiaofeng and his team are tasked with an important task: noise assessment and control of the Wentian experimental cabin. Therefore, they are also known as “space tuners” who tame the noise of the space station’s experimental cabin…..
help Takionauts Feel the “sound of take-off” in advance
During the launch of the Shenzhou spacecraft, the noise outside the cabin can reach 140-160 decibels. With such a “magic sound”, can the spacecraft maintain its normal working condition? Can the astronauts in the cabin withstand it? These issues are always on the minds of the technical staff of the Fifth Academy.
To this end, at the beginning of the development of the Shenzhou spacecraft, a large-scale noise laboratory tailored for the spacecraft came into being . The world’s second largest reverberation chamber independently developed by the company has a sound pressure that exceeds 100 times the noise of the aircraft when it takes off, ensuring that the spacecraft’s mechanical tests are “immersive” and the rehearsal data is “exactly.”
Before the launch of the Shenzhou spacecraft, a comprehensive and strict “physical examination” will be carried out in the reverberation chamber. Under the operation of the test team of the Fifth Academy, dozens of sound-generating devices worked at the same time, generating high-intensity noise during the launch process. Hundreds of sensors monitored the spacecraft and checked whether the noise environment in the spacecraft’s return cabin satisfies the design. The indicators require that astronauts feel the “sound of take-off” in advance.
Form a stand-in “chorus” Find the “loud voice”
A large number of compressors, pumps, fans, CMGs for attitude adjustment and other equipment are installed in the Wentian
After the Wentian experimental module and the Tianhe core module meet and connect, they will form a connected whole. The astronauts will enter the Wentian experimental module to carry out a series of space experiments and research work. In order to provide them with a quiet and comfortable working environment, it is necessary to identify the equipment with the loudest noise and the most obvious impact, and carry out more precise and stricter noise control .
The equipment in the Wentian Without the noise source, the experimenters formed a team of stand-in “chorus” to simulate the noise .
Noise source simulation technology is like learning to sing, it is necessary to learn the “tone” and control the “voice”. The noise source has its own recording studio – an anechoic room, which can carry out all-round stereo simulation of frequency, sound pressure and power. After learning to “sing” the noise source, the sound source simulation system can be installed on the space station and perform on stage. Noise-cancelling equipment.
”Teaching in accordance with aptitude “ Silence the “loud voice”
The “loud voice” has been found. How to make the equipment “quiet” is the next batch of technical difficulties that the test team needs to overcome.
Taking my country’s first “space refrigerator” carried in the Wentian experimental module as an example, there are many restrictions on its noise reduction. For example, in order to ensure the air quality in the cabin, the space station has strict requirements on the selection of materials, and many Noise-reducing materials commonly used on the ground are not suitable for the space station. So how to complete the noise reduction work of the “space refrigerator” most efficiently in the most limited resources, the lowest weight, and the smallest space?
The test team first built a full-envelope test platform in the anechoic chamber to overcome the cumbersome transfer path problem caused by complex systems. Noise reduction route.
“The thief catches the king first”, the test team has carried out a pioneering design for the key pump , which perfectly minimizes the sound energy input while ensuring the cooling efficiency. At the same time, by choosing a new type of attachment material to improve the damping of the structure, improve the sound radiation efficiency of the box, and improve the structural conduction characteristics by changing the connection relationship… By perfecting every detail, the noise index of the aerospace refrigerator has been reduced by nearly 20 decibels.
The causes of noise, installation locations, and sizes of equipment in the cabin are different. The noise source mainly based on vibration is put on soft and comfortable “shoes” made of metal rubber; the noise source mainly based on sound radiation is placed in a box with better sound insulation… In the end, the Wentian experimental cabin works The area noise can be kept below 60 decibels, and the sleeping area can be kept below 50 decibels, meeting the requirements of relevant medical standards.
On July 25, the Wentian experimental module successfully docked with the Tianhe core module in the long-term care of the test team. The hatch opened slowly, and the Takionauts ‘s home was officially upgraded and expanded – the new room has new supplies, new facilities, new tasks, and new challenges.
The tense expressions of the team members staring at the screen slowly relaxed as the astronauts smiled comfortably as they entered the new room. They hug each other, congratulate each other, encourage each other, and look forward to the next journey of stars and seas.
With the development of the aerospace industry, the space station mechanics test team of the General Assembly and Environmental Engineering Department of the Fifth Academy has explored more than 10,000 unforgettable days and nights in the fields of noise, vibration, shock, acceleration and modal. Along the way, they have lived up to their mission and overcame obstacles in their struggles, for the safety and stability of the spacecraft, for the safety and comfort of the astronauts, and for the vigorous development of China’s aerospace industry, they bravely climbed new heights and created more exciting things.
On Hainan Province –China –People’s Republic of China…. in the district area of the Wenchang – Wenchang Spacecraft launch center in which the awesome team at one of many CNSA –China National Space Administration that China National Space Administration…………… On 24th July 2022
After Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, 2022, Beijing time, it was successfully connected to the forward port of 天和 Tianhe Core Module. The entire rendezvous and docking process lasted about 13 hours. . This is the first time that two 20-ton spacecraft in my country- China- People’s Republic of China have achieved rendezvous and docking in orbit. …According to the mission plan, the Shenzhou 14 Takionaut crew will then enter the Wentian experimental module….. In which finally docked in early morning time of the 25th July 2022 in with CNSA –Beijing Aerospace City in which co-ordinated the docking maneuverers have achieved rendezvous and docking in orbit.… in which the crew of the Shenzhou 14 staying for six months in construction of the stage one of the China Space station with the additional Mengtian experimental module in which will be delivered on the October 2022 Launch Schedule calendar..
On the week of 8th August 2022 天宮Diary of the Wentian Cabin of the 14th Crew of Shenzhou setting up The Wentian Experimental Cabin provides Takionauts with a larger living space, as well as space science experiments in more disciplines condition. The Shenzhou 14 Takionaut crew is currently setting up the working environment in the cabin and carrying out space science experiments. Brand new environment, new content, and new angle; let’s see the wonderful pictures of the Shenzhou 14 Takionaut crew in Wentian module capsule!
The Chinese space station is designed with 12 CMGs, and the maximum angular momentum of a single machine is 1 500 Nm. 6 are connected to the outer wall of the cone in the Tianhe-1 large-small column section, and the other 6 are configured in the Wentian cabin (4 are launched with the cabin), which can be reconfigured on demand at the system level through the general network.
The one installed by the astronauts in the video was sent on the Tianzhou-4 cargo ship before, and the Tianzhou-5 cargo ship will send another one.
Friends, the Takionauts are calling you to “Wangtian Palace”!
On Hainan Province –China –People’s Republic of China…. in the district area of the Wenchang – Wenchang Spacecraft launch center in which the awesome team at one of many CNSA –China National Space Administration that China National Space Administration…………… On 24th July 2022…
After Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, 2022, Beijing time, it was successfully connected to the forward port of 天和 Tianhe Core Module. The entire rendezvous and docking process lasted about 13 hours. . This is the first time that two 20-ton spacecraft in my country- China- People’s Republic of China have achieved rendezvous and docking in orbit. …According to the mission plan, the Shenzhou 14 Takionaut crew will then enter the Wentian experimental module….. In which finally docked in early morning time of the 25th July 2022 in with CNSA –Beijing Aerospace City in which co-ordinated the docking maneuverers have achieved rendezvous and docking in orbit.… in which the crew of the Shenzhou 14 staying for six months in construction of the stage one of the China Space station with the additional Mengtian experimental module in which will be delivered on the October 2022 Launch Schedule calendar..
Announcement on the online solicitation of the “Hand in Hand, Looking at the Heavenly Palace” youth and manned spaceflight face-to-face activity
Do you still remember the unprecedented “Heavenly Palace Painting Exhibition” on New Year’s Day this year? Remember last year’s “Youth and Stars Conversation” between children in the Midwest and Takionauts aunts and uncles? Do you still remember the “Global Shooting Heaven Palace” event that became popular on the Internet since last year? Do you want to send your own paintings into space as well? Do you want to take a photo of “Heavenly Palace” with your hometown? Do you want to send a letter to Takionauts uncles and aunts? Want to go to the launch site to watch the rocket launch? Now the opportunity is here, scan the QR code in the text or log in to the manned space engineering website (website: www.cmse.gov.cn ) , as well as the client of People’s Daily, Xinhua News Agency, and CCTV news client to participate in the “Hands-on” Let’s hold hands and look at the Heavenly Palace” face-to-face activity between young people and manned spaceflight!
2022 is the 30th anniversary of the establishment of China’s manned space project and the decisive year for the construction of China’s space station. The dream of building China’s own space station is about to become a reality. In order to fully demonstrate the historic achievements and historic leaps made by the motherland’s aerospace industry since the 18th National Congress of the Communist Party of China, and to further guide the young people to establish lofty ideals, strengthen China’s self-confidence, fortify their will to struggle, and promote the spirit of science, they will now face the The whole society carried out a face-to-face activity between young people and manned spaceflight of “Hand in Hand, Looking at the Heavenly Palace”. The event was guided by the China Manned Space Engineering News and Publicity Office, hosted by the China Aerospace Foundation, and undertaken by the No. 208 Institute of the Second Research Institute of China Aerospace Science and Industry Corporation. Online collection activities such as “Tiangong Painting Exhibition” and “Juvenile Photographing Tiangong”, continue to carry out the “Going to Heaven with Dreams” activities, and collect “a letter to Takionauts.”. The selected works of the above activities will be displayed publicly at the Chinese Space Station. The award-winning authors will have the opportunity to watch the rocket launch at the launch site and conduct dialogues and exchanges with the Takionauts.
Young people are welcome to participate actively, join hands to realize the dream, and witness the historical moment of the completion of the construction of the Chinese space station! Please refer to the attachment for the specific requirements of the event.
