They need civilian astronaut, mostly professor or scientist to conduct experiment on space station.
China Outer Space Science, Technology and Explorations: News & Updates
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Daniel808
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Yes, for manning the Space Station CNSA will recruits not only Air Force Pilots, but Scientists and Engginers also recruited in this batch.
Even scientists specialized in Life and Genetics science
JSCh
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China's liquid rocket engine completes key restart function test
Source:Global Times Published: 2020/5/28 13:55:03
China's 15-ton reusable liquid oxygen-methane engine JD-1 completed a key secondary start test on Wednesday.
The completion of the test makes JD-1 the first engine of its kind to achieve a restart function and marks a key breakthrough in vertical landing rocket technology, according to a reply sent by the Beijing-based engine developer i-Space to the Global Times on Thursday.
The vertical landing technology has high technical requirements for the rocket's power system. A core technology allows for the second start of the engine, the engine's ability to start and work normally in high altitude after its first normal shutdown.
"The reusable rocket has a high demand on its engine, which has to kick off twice during the take-off and landing processes. The test is of huge significance to the development of reusable rockets," Xing Qiang, an expert at Small Rocket Studio, told the Global Times on Thursday.
"It is likely China will be the second country to acquire reusable launch technology after the US," he said.
The engine is powered with liquid oxygen-methane, a low-cost and clean fuel, and is designed to be used up to 30 times, which can save more than 70 percent in rocket manufacturing costs, according to the developer.
The engine will be assembled onboard the reusable liquid oxygen-methane carrier rocket Hyperbola-2, said a power system engineer with i-Space, noting that the test laid a solid foundation for the launch of the rocket.
The rocket, with a take-off weight of 90 tons, is capable of sending 1.9-ton payloads into low-Earth orbit and is expected to be launched for the first time in 2021.
The next technological breakthrough will be in precise guidance and control technology, and the selection and planning of landing sites, Xing said.
JSCh
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Machine Translate:
China Aerospace Science and Technology Corporation (CASC)
11 minutes ago
[The space elevator is coming true! The future of China's access to space and space transportation will see a revolutionary change]
Li Hong, a member of the National Committee of the Chinese People's Political Consultative Conference (CPPCC), a member of the Party Group and deputy general manager of CASC, said when introducing the development achievements in the field of space transportation in China, the Long March series of carrier rockets successfully implemented the rocket launch missions of major national projects represented by the manned space project, the moon exploration project, the Beidou project, etc. This year, Long March 8 will make its maiden flight. By around 2030, China's heavy carrier rocket will have made its maiden flight, and by 2045, China's access to and from space and space transportation will have undergone a revolutionary change, with space elevator and the like expected to become a reality.
Daniel808
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China outlines intense space station launch schedule, new astronaut selection
by Andrew Jones — May 28, 2020
Artist impression of the future Chinese Space Station. Credit: CMSA
HELSINKI — China is preparing to carry out 11 missions in two years to construct a space station and will soon select a new batch of astronauts for the project.
The first module for the Chinese space station will launch next year, said Zhou Jianping, chief designer of China’s human spaceflight program, on the sidelines of a political conference in Beijing Tuesday.
Launch of the Tianhe core module on a Long March 5B could take place at Wenchang in early 2021. This will be followed by a crewed Shenzhou flight, from Jiuquan, and a Tianzhou cargo mission. The first of two experiment modules will then launch for docking with Tianhe.
In total 11 launches will be conducted to complete the construction of the space station by around 2023, Zhou said (Chinese). These will be the launch of the core and two experiment modules, as well as four crewed spacecraft and four cargo spacecraft.
The intensive launch plan was revealed following the successful test flight of the Long March 5B heavy-lift rocket May 5. The missions will be conducted using Long March 5B, Long March 2F and Long March 7 launch vehicles.
China will launch its Tianwen-1 Mars mission in July and Chang’e-5 lunar sample return in the fourth quarter before proceeding to launch the space station core module.
The three-module, 66-metric-ton space station will host three astronauts for six month rotations. Planned experiments include international projects in the areas of astronomy, space medicine, space life science, biotechnology, microgravity fluid physics, microgravity combustion and space technologies.
The outpost will orbit at between 340-450 kilometers for at least 10 years. Orbital inclination will be around 43 degrees to allow crewed launches to the station from Jiuquan in the Gobi Desert. The station could potentially be expanded to six modules, using apparent backup modules.
A co-orbiting two-metre-aperture space telescope will also be launched following completion of the basic station configuration. The ‘Xuntian’ optical module will be able to dock with the space station for maintenance and repairs.
“Its resolution ratio will be equivalent to the well-known Hubble telescope, but its field angle will be 300 times larger than the Hubble telescope. With it, we can finish the survey of large areas in space in 10 years,” said Zhou earlier this month.
New astronaut selection in July
A third batch of astronauts will be selected in July, astronaut Wang Yaping told press May 24 (Chinese).
Up to 18 new astronauts, including men and women, will be drawn from the People’s Liberation Army Air Force and, for the first time, civilians with science and engineering backgrounds, according to previous announcements. The latter are expected to bring expertise and efficiency to science tasks.
Wang in 2013 became China’s second woman astronaut in space. The Shenzhou 10 mission veteran said she is looking forward to receiving new teammates and assisting their training.
The new selection round follows two previous selections in the 1990s and 2010. The current astronauts have been undergoing neutral buoyancy training in preparation for space station missions and extra vehicular activity.
Opening of a new round of astronaut selection was first announced in 2017. However, the failure of the second Long March 5 in July that year postponed the space station project.
The Long March 5B designed to launch station modules had a successful first flight May 5. This followed the requisite December return-to-flight of the Long March 5, which was grounded for more than 900 days.
The Long March 5B inaugural flight tested a variant of a new-generation crew spacecraft. The low Earth orbit variant will be capable of ferrying six astronauts, or three astronauts and 500 kilograms of cargo, to the space station.
The partially reusable craft could eventually replace the smaller Shenzhou as the main means of transport to the space station.
https://spacenews.com/china-outlines-intense-space-station-launch-schedule-new-astronaut-selection/
Next year will be a busy year for China Spaceflight.
Space Station here we go
by Andrew Jones — May 28, 2020
Artist impression of the future Chinese Space Station. Credit: CMSA
HELSINKI — China is preparing to carry out 11 missions in two years to construct a space station and will soon select a new batch of astronauts for the project.
The first module for the Chinese space station will launch next year, said Zhou Jianping, chief designer of China’s human spaceflight program, on the sidelines of a political conference in Beijing Tuesday.
Launch of the Tianhe core module on a Long March 5B could take place at Wenchang in early 2021. This will be followed by a crewed Shenzhou flight, from Jiuquan, and a Tianzhou cargo mission. The first of two experiment modules will then launch for docking with Tianhe.
In total 11 launches will be conducted to complete the construction of the space station by around 2023, Zhou said (Chinese). These will be the launch of the core and two experiment modules, as well as four crewed spacecraft and four cargo spacecraft.
The intensive launch plan was revealed following the successful test flight of the Long March 5B heavy-lift rocket May 5. The missions will be conducted using Long March 5B, Long March 2F and Long March 7 launch vehicles.
China will launch its Tianwen-1 Mars mission in July and Chang’e-5 lunar sample return in the fourth quarter before proceeding to launch the space station core module.
The three-module, 66-metric-ton space station will host three astronauts for six month rotations. Planned experiments include international projects in the areas of astronomy, space medicine, space life science, biotechnology, microgravity fluid physics, microgravity combustion and space technologies.
The outpost will orbit at between 340-450 kilometers for at least 10 years. Orbital inclination will be around 43 degrees to allow crewed launches to the station from Jiuquan in the Gobi Desert. The station could potentially be expanded to six modules, using apparent backup modules.
A co-orbiting two-metre-aperture space telescope will also be launched following completion of the basic station configuration. The ‘Xuntian’ optical module will be able to dock with the space station for maintenance and repairs.
“Its resolution ratio will be equivalent to the well-known Hubble telescope, but its field angle will be 300 times larger than the Hubble telescope. With it, we can finish the survey of large areas in space in 10 years,” said Zhou earlier this month.
New astronaut selection in July
A third batch of astronauts will be selected in July, astronaut Wang Yaping told press May 24 (Chinese).
Up to 18 new astronauts, including men and women, will be drawn from the People’s Liberation Army Air Force and, for the first time, civilians with science and engineering backgrounds, according to previous announcements. The latter are expected to bring expertise and efficiency to science tasks.
Wang in 2013 became China’s second woman astronaut in space. The Shenzhou 10 mission veteran said she is looking forward to receiving new teammates and assisting their training.
The new selection round follows two previous selections in the 1990s and 2010. The current astronauts have been undergoing neutral buoyancy training in preparation for space station missions and extra vehicular activity.
Opening of a new round of astronaut selection was first announced in 2017. However, the failure of the second Long March 5 in July that year postponed the space station project.
The Long March 5B designed to launch station modules had a successful first flight May 5. This followed the requisite December return-to-flight of the Long March 5, which was grounded for more than 900 days.
The Long March 5B inaugural flight tested a variant of a new-generation crew spacecraft. The low Earth orbit variant will be capable of ferrying six astronauts, or three astronauts and 500 kilograms of cargo, to the space station.
The partially reusable craft could eventually replace the smaller Shenzhou as the main means of transport to the space station.
https://spacenews.com/china-outlines-intense-space-station-launch-schedule-new-astronaut-selection/
Next year will be a busy year for China Spaceflight.
Space Station here we go
Galactic Penguin SST
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China's 1 Kilometer Tall Drop Tower
ESA's Zarm drop tower in Bremen, Germany
Jumping out of a plane or falling down a liftshaft have one thing in common: you experience weightlessness until you hit the ground. Drop towers exploit this fact of nature to offer researchers brief periods of microgravity for experiments.
From the moment an experiment is let go at the top of a drop tower until it hits the padded ground beneath, the experiment is free of the influences of gravity.
These short bouts of microgravity are open to scientists from all over the world and offer an economical alternative to spaceflight that can be used at any time of the year.
ESA uses the Zarm drop tower in Bremen, Germany. The 146 m-tall concrete tower is a landmark on the Bremen University campus. Over 5000 experiments have been dropped since its inauguration in 1990.
Zarm delivers 4.74 seconds of near-weightlessness up to three times a day. The microgravity time can be doubled using a catapult system. From the bottom, the catapult propels experiments upwards to fall back.
The drop tube stands free of the outer structure. This allows the exterior to vibrate from strong winds while the inner drop tube and the experiments inside are guaranteed to be free of vibrations.
The experiment capsules have a diameter of 80 cm and a length of up to 2.4 m. The capsules are closed under pressure by an aluminium cover. The drop-tube itself is evacuated to reduce air drag during the fall.
Eighteen pumps take around 90 minutes to remove all the air from the 1700 m3 towers – around the same as pumping out a two-storey house.
During the 110 m of free fall the experiments are subjected to 0.000001 the gravity normally felt on Earth. The weightlessness is ended by polystyrene beads breaking the container’s fall. It then takes 20 minutes to flood the drop tower with air before researchers can retrieve their experiment.
https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Research/Drop_towers
China's Future 1 Kilometer Tall Drop Tower
China's plan is similar in scale to the Chinese 100-kilometre-circumference facility mega-collider that would dwarf the European 27-kilometre Large Hadron Collider (LHC) at CERN, or the CZ-9 Heavy space launcher.
The Drop tower would be the longest in the world with 1'000 meters, compared to the 146 meters of the ESA's Drop Tower.
It will use electromagnetic catapults, similar to those developed for the aircraft carriers and electromagnetic space launchers.
The experiment capsules will have diameter large enough to embark and train astronauts for weightlessness.
VIDEO: 【开放日直播回顾3】围观黑科技~参观电磁弹射实验室
2020-05-27 05:09:10
https://www.bilibili.com/video/BV1gp4y1X7n6
https://www.bilibili.com/video/BV1gp4y1X7n6
http://archive.vn/vx3Nq/adfcce44119fbe35a26cfb4d96f36d290cbb7de8.png ; https://archive.vn/vx3Nq/eafea2327dfa16c836dd7922d7de0c4aa9665e68/scr.png ; http://web.archive.org/web/20200528204024/https://i.imgur.com/wIJLWTQ.png ; https://www.bilibili.com/video/BV1gp4y1X7n6
▲ 1. Taikonaut training in China's 1 Kilometer Tall Drop Tower. 1000米“失重塔”
http://archive.is/YDRMj/250753521cf7e33d935b75fb116ec6e1de65870b.jpg ; https://archive.is/YDRMj/dfd142b96e9bcc05c8e30299765b4866c5d14a18/scr.png ; http://web.archive.org/web/20200528202844/https://pbs.twimg.com/media/EZCZZmQXYAUvAh7?format=jpg&name=medium ; https://twitter.com/TheElegant055/status/1265680175368413186/photo/1
▲ 2. China's Future 1 Kilometer Tall Drop Tower.
http://archive.vn/IYa8O/8dbe373cc0abb75d867d22160797d5bbc5ccc109.jpg ; https://archive.vn/IYa8O/2a8ec16b87d8b392e7ebd217437c735a2a858acf/scr.png ; http://web.archive.org/web/20200528203738/https://pbs.twimg.com/media/EZCVBqiXkAEPpk9?format=jpg&name=large ; https://twitter.com/TheElegant055/status/1265675356452896772/photo/1
▲ 3. China's Future 1 Kilometer Tall Drop Tower.
ESA's Zarm drop tower in Bremen, Germany
Jumping out of a plane or falling down a liftshaft have one thing in common: you experience weightlessness until you hit the ground. Drop towers exploit this fact of nature to offer researchers brief periods of microgravity for experiments.
From the moment an experiment is let go at the top of a drop tower until it hits the padded ground beneath, the experiment is free of the influences of gravity.
These short bouts of microgravity are open to scientists from all over the world and offer an economical alternative to spaceflight that can be used at any time of the year.
ESA uses the Zarm drop tower in Bremen, Germany. The 146 m-tall concrete tower is a landmark on the Bremen University campus. Over 5000 experiments have been dropped since its inauguration in 1990.
Zarm delivers 4.74 seconds of near-weightlessness up to three times a day. The microgravity time can be doubled using a catapult system. From the bottom, the catapult propels experiments upwards to fall back.
The drop tube stands free of the outer structure. This allows the exterior to vibrate from strong winds while the inner drop tube and the experiments inside are guaranteed to be free of vibrations.
The experiment capsules have a diameter of 80 cm and a length of up to 2.4 m. The capsules are closed under pressure by an aluminium cover. The drop-tube itself is evacuated to reduce air drag during the fall.
Eighteen pumps take around 90 minutes to remove all the air from the 1700 m3 towers – around the same as pumping out a two-storey house.
During the 110 m of free fall the experiments are subjected to 0.000001 the gravity normally felt on Earth. The weightlessness is ended by polystyrene beads breaking the container’s fall. It then takes 20 minutes to flood the drop tower with air before researchers can retrieve their experiment.
https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Research/Drop_towers
China's Future 1 Kilometer Tall Drop Tower
China's plan is similar in scale to the Chinese 100-kilometre-circumference facility mega-collider that would dwarf the European 27-kilometre Large Hadron Collider (LHC) at CERN, or the CZ-9 Heavy space launcher.
The Drop tower would be the longest in the world with 1'000 meters, compared to the 146 meters of the ESA's Drop Tower.
It will use electromagnetic catapults, similar to those developed for the aircraft carriers and electromagnetic space launchers.
The experiment capsules will have diameter large enough to embark and train astronauts for weightlessness.
VIDEO: 【开放日直播回顾3】围观黑科技~参观电磁弹射实验室
2020-05-27 05:09:10
https://www.bilibili.com/video/BV1gp4y1X7n6
https://www.bilibili.com/video/BV1gp4y1X7n6
http://archive.vn/vx3Nq/adfcce44119fbe35a26cfb4d96f36d290cbb7de8.png ; https://archive.vn/vx3Nq/eafea2327dfa16c836dd7922d7de0c4aa9665e68/scr.png ; http://web.archive.org/web/20200528204024/https://i.imgur.com/wIJLWTQ.png ; https://www.bilibili.com/video/BV1gp4y1X7n6
▲ 1. Taikonaut training in China's 1 Kilometer Tall Drop Tower. 1000米“失重塔”
http://archive.is/YDRMj/250753521cf7e33d935b75fb116ec6e1de65870b.jpg ; https://archive.is/YDRMj/dfd142b96e9bcc05c8e30299765b4866c5d14a18/scr.png ; http://web.archive.org/web/20200528202844/https://pbs.twimg.com/media/EZCZZmQXYAUvAh7?format=jpg&name=medium ; https://twitter.com/TheElegant055/status/1265680175368413186/photo/1
▲ 2. China's Future 1 Kilometer Tall Drop Tower.
http://archive.vn/IYa8O/8dbe373cc0abb75d867d22160797d5bbc5ccc109.jpg ; https://archive.vn/IYa8O/2a8ec16b87d8b392e7ebd217437c735a2a858acf/scr.png ; http://web.archive.org/web/20200528203738/https://pbs.twimg.com/media/EZCVBqiXkAEPpk9?format=jpg&name=large ; https://twitter.com/TheElegant055/status/1265675356452896772/photo/1
▲ 3. China's Future 1 Kilometer Tall Drop Tower.
JSCh
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NEWS RELEASE 1-JUN-2020
Solar Ring mission: A new concept of space exploration for understanding Sun and the inner heliosphere
SCIENCE CHINA PRESS
![233481_web[1].jpg](https://defence.pk/attachments/233481_web-1-jpg.637861/ "233481_web[1].jpg")
This is a conceptual map of the Solar Ring mission. CREDIT: Science China Press
With the development of science and technology, human's activity was and is expanding from land, sea and sky to the space and other planets. In the near future, deep space and other terrestrial planets will become the next main territory of human. Sun is the nearest star in the universe. It affects the (interplanetary-)space of our planets in many time scales. Thus, observing and understanding the solar activity and its evolution in interplanetary space and influence on the space environment of planets is one of the necessary capabilities for us to enter the deep space and expand our territory.
Recently, Professor Wang Yuming and his team from the University of Science and Technology of China, in collaboration with the teams from Purple Mountain Observatory of Chinese Academy of Sciences (CAS), Innovation Academy for Microsatellites of CAS, Shandong University, and the University of CAS, proposed a new concept of space exploration for understanding Sun and the inner heliosphere, which was published online in "Science China Technological Sciences".
This concept for the first time proposes to deploy six spacecraft, grouped in three pairs, in three elliptical orbits between the earth and Venus around the Sun to observe and study the Sun and the inner heliosphere in a full 360-degree perspective. The separation angle between two spacecraft in each group is about 30 degrees, and that between every two groups is about 120 degrees. Through this configuration, the mission will be able to image the vast area from the photosphere to the inner heliosphere with high resolution, and perform the in situ measurements. Three unprecedented capabilities will be established: (1) determine the photospheric vector magnetic field with unambiguity, (2) provide 360-degree maps of the Sun and the inner heliosphere routinely, and (3) resolve the solar wind structures at multiple scales and multiple longitudes. With these capabilities, the Solar Ring mission aims to address the origin of solar cycle, the origin of solar eruptions, the origin of solar wind transients and the origin of severe space weather events.
In order to achieve these scientific objectives, researchers suggest the following science payloads equipped on the six spacecraft: Spectral imager for magnetic field and helioseismology, Multi-band imager for EUV emissions, Wide-angle coronagraph, Radio investigator, Flux-gate magnetometer, Solar wind plasma analyzer, and High-energy particle detector. It is preliminarily estimated that the total mass of the payloads on each spacecraft is less than 110 kg, the power consumption is no more than 180 W, and the peak data transmission rate is about 52.06 Mbps.
According to the carrying capacity of China, Long March 3A or Long March 3B can be used to deploy the spacecraft in three launches by using one rocket two spacecraft technology. The deployment period and the selection of the launch vehicle depend on the orbital parameters. The most challenging difficulty in the whole task is the data transmission. In the traditional communication mode, the data transmission rate is about 5 Mbps at a distance of 0.25 AU (the average distance between the Sun and Earth is 1 AU) away from the Earth, and it will decrease to as low as 70 kbps at a distance of 2 AU. This data transmission rate is far lower than the desired scientific demand. To solve or relieve this problem, we either reduce the data rate by enhancing the capability of the onboard data processing, compression and storage and decreasing the sampling frequency, or develop more efficient techniques for the deep space communication, e.g., laser communication.
The mission has a long implementation period and high cost, but its scientific and application prospects are significant. It can be implemented in three phases, with two spacecraft deployed in each phase. The successful implementation of any stage can bring great progress in detection ability and scientific research; at the same time, the design idea of grouping makes the task have the prospect and possibility of international cooperation. The successful accomplishment of the mission will greatly advance our understanding of the Sun and interplanetary space environment sounding our planets, so as to enhance our capability to enter the deep space and expand the next new territory of human.
Solar Ring mission: A new concept of space exploration for understanding Sun and the inner heliosphere | EurekAlert! Science News
Solar Ring mission: A new concept of space exploration for understanding Sun and the inner heliosphere
SCIENCE CHINA PRESS
With the development of science and technology, human's activity was and is expanding from land, sea and sky to the space and other planets. In the near future, deep space and other terrestrial planets will become the next main territory of human. Sun is the nearest star in the universe. It affects the (interplanetary-)space of our planets in many time scales. Thus, observing and understanding the solar activity and its evolution in interplanetary space and influence on the space environment of planets is one of the necessary capabilities for us to enter the deep space and expand our territory.
Recently, Professor Wang Yuming and his team from the University of Science and Technology of China, in collaboration with the teams from Purple Mountain Observatory of Chinese Academy of Sciences (CAS), Innovation Academy for Microsatellites of CAS, Shandong University, and the University of CAS, proposed a new concept of space exploration for understanding Sun and the inner heliosphere, which was published online in "Science China Technological Sciences".
This concept for the first time proposes to deploy six spacecraft, grouped in three pairs, in three elliptical orbits between the earth and Venus around the Sun to observe and study the Sun and the inner heliosphere in a full 360-degree perspective. The separation angle between two spacecraft in each group is about 30 degrees, and that between every two groups is about 120 degrees. Through this configuration, the mission will be able to image the vast area from the photosphere to the inner heliosphere with high resolution, and perform the in situ measurements. Three unprecedented capabilities will be established: (1) determine the photospheric vector magnetic field with unambiguity, (2) provide 360-degree maps of the Sun and the inner heliosphere routinely, and (3) resolve the solar wind structures at multiple scales and multiple longitudes. With these capabilities, the Solar Ring mission aims to address the origin of solar cycle, the origin of solar eruptions, the origin of solar wind transients and the origin of severe space weather events.
In order to achieve these scientific objectives, researchers suggest the following science payloads equipped on the six spacecraft: Spectral imager for magnetic field and helioseismology, Multi-band imager for EUV emissions, Wide-angle coronagraph, Radio investigator, Flux-gate magnetometer, Solar wind plasma analyzer, and High-energy particle detector. It is preliminarily estimated that the total mass of the payloads on each spacecraft is less than 110 kg, the power consumption is no more than 180 W, and the peak data transmission rate is about 52.06 Mbps.
According to the carrying capacity of China, Long March 3A or Long March 3B can be used to deploy the spacecraft in three launches by using one rocket two spacecraft technology. The deployment period and the selection of the launch vehicle depend on the orbital parameters. The most challenging difficulty in the whole task is the data transmission. In the traditional communication mode, the data transmission rate is about 5 Mbps at a distance of 0.25 AU (the average distance between the Sun and Earth is 1 AU) away from the Earth, and it will decrease to as low as 70 kbps at a distance of 2 AU. This data transmission rate is far lower than the desired scientific demand. To solve or relieve this problem, we either reduce the data rate by enhancing the capability of the onboard data processing, compression and storage and decreasing the sampling frequency, or develop more efficient techniques for the deep space communication, e.g., laser communication.
The mission has a long implementation period and high cost, but its scientific and application prospects are significant. It can be implemented in three phases, with two spacecraft deployed in each phase. The successful implementation of any stage can bring great progress in detection ability and scientific research; at the same time, the design idea of grouping makes the task have the prospect and possibility of international cooperation. The successful accomplishment of the mission will greatly advance our understanding of the Sun and interplanetary space environment sounding our planets, so as to enhance our capability to enter the deep space and expand the next new territory of human.
Solar Ring mission: A new concept of space exploration for understanding Sun and the inner heliosphere | EurekAlert! Science News
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Giant Chinese telescope looking for ET
By Yang Jun in Guiyang | chinadaily.com.cn | Updated: 2020-06-03 18:48
The 500-meter Aperture Spherical Telescope, or FAST, in Pingtang county, Guizhou province, is the world's largest radio telescope. [Photo by Dai Chuanfu/for chinadaily.com.cn]
The 500-meter Aperture Spherical Telescope, or FAST, China's mega science project and the world's largest single-dish radio observatory, has embarked on a search for extraterrestrial intelligence, according to Science and Technology Daily.
Located in Pingtang county in Guizhou province, FAST was officially unveiled in September 2016. As the world's largest instrument of its type, it can detect radio-waves from billions of light-years away.
The search for extraterrestrial intelligence is one of the five main scientific goals of FAST.
In 2018, FAST installed back-end equipment specifically to find extraterrestrials.
"At present, the back-end equipment is being upgraded, and it is expected that new observations can be made after September, when the extraterrestrial civilization search will be launched," said Professor Zhang Tongjie of Beijing Normal University's astronomy department.
By Yang Jun in Guiyang | chinadaily.com.cn | Updated: 2020-06-03 18:48
The 500-meter Aperture Spherical Telescope, or FAST, China's mega science project and the world's largest single-dish radio observatory, has embarked on a search for extraterrestrial intelligence, according to Science and Technology Daily.
Located in Pingtang county in Guizhou province, FAST was officially unveiled in September 2016. As the world's largest instrument of its type, it can detect radio-waves from billions of light-years away.
The search for extraterrestrial intelligence is one of the five main scientific goals of FAST.
In 2018, FAST installed back-end equipment specifically to find extraterrestrials.
"At present, the back-end equipment is being upgraded, and it is expected that new observations can be made after September, when the extraterrestrial civilization search will be launched," said Professor Zhang Tongjie of Beijing Normal University's astronomy department.
JSCh
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Novel Vision-based Algorithm to Track Pose of Spacecraft in Real Time
Editor: LI Yuan | Jun 18, 2020
Guidance, navigation and control technologies of spacecraft require accurate tracking of the relative 6-degree-of-freedom (DOF) pose of the spacecraft in close range during space mission, such as debris removal, landing, rendezvous and docking.
Computer vision techniques have recently become increasingly crucial in 6-DOF pose tracking due to its low energy consumption, rapidness, long work range, and cheapness.
However, traditional vision-based pose tracking methods suffer from relatively low accuracy, long runtime and is incapable of determining the pose of spacecraft with multi-rigid-body structure.
Researchers from the Shenzhen Institutes of Advanced Technology (SIAT) of the Chinese Academy of Sciences and their collaborators from Beihang University developed a novel vision-based algorithm to track the 6-DOF pose of a multi-rigid-body spacecraft in real time. The study was published in IEEE Transactions on Aerospace and Electronic Systems.
On a general spacecraft, there exists plenty of geometric primitives (GPs), such as line segments, circles, spheres, cones, cylinders, developable surfaces, etc. The proposed algorithm tracks the 6-DOF pose of spacecraft via geometrically fitting the GPs on the spacecraft with Generalized Expectation-Maximization, M-estimation and Extended Kalman Filter.
Eventually, this algorithm could provide the maximum likelihood estimation (MLE) for spacecraft pose and outperform other up-to-date pose tracking methods in terms of accuracy and rapidness.
Extensive synthetic and real experiments verified that the proposed algorithm could fulfil the pose tracking of spacecraft with about 33.33Hz, and have satisfactory robustness to random noise, background clutter, and dramatic illumination changes in space environment.
Examples of the tracking for the manned spacecraft model (Image by LIU Chang)
Novel Vision-based Algorithm to Track Pose of Spacecraft in Real Time----Chinese Academy of Sciences
Editor: LI Yuan | Jun 18, 2020
Guidance, navigation and control technologies of spacecraft require accurate tracking of the relative 6-degree-of-freedom (DOF) pose of the spacecraft in close range during space mission, such as debris removal, landing, rendezvous and docking.
Computer vision techniques have recently become increasingly crucial in 6-DOF pose tracking due to its low energy consumption, rapidness, long work range, and cheapness.
However, traditional vision-based pose tracking methods suffer from relatively low accuracy, long runtime and is incapable of determining the pose of spacecraft with multi-rigid-body structure.
Researchers from the Shenzhen Institutes of Advanced Technology (SIAT) of the Chinese Academy of Sciences and their collaborators from Beihang University developed a novel vision-based algorithm to track the 6-DOF pose of a multi-rigid-body spacecraft in real time. The study was published in IEEE Transactions on Aerospace and Electronic Systems.
On a general spacecraft, there exists plenty of geometric primitives (GPs), such as line segments, circles, spheres, cones, cylinders, developable surfaces, etc. The proposed algorithm tracks the 6-DOF pose of spacecraft via geometrically fitting the GPs on the spacecraft with Generalized Expectation-Maximization, M-estimation and Extended Kalman Filter.
Eventually, this algorithm could provide the maximum likelihood estimation (MLE) for spacecraft pose and outperform other up-to-date pose tracking methods in terms of accuracy and rapidness.
Extensive synthetic and real experiments verified that the proposed algorithm could fulfil the pose tracking of spacecraft with about 33.33Hz, and have satisfactory robustness to random noise, background clutter, and dramatic illumination changes in space environment.
Novel Vision-based Algorithm to Track Pose of Spacecraft in Real Time----Chinese Academy of Sciences
JSCh
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China's large solar telescope ready for space weather forecasts
Source: Xinhua| 2020-06-22 18:43:47|Editor: huaxia
BEIJING, June 22 (Xinhua) -- A Chinese large solar telescope has recently captured images of the sun's surface with details, indicating that this optical instrument can detect solar storm warnings, said scientists.
The Chinese Large Solar Telescope (CLST), with a 1.8-meter aperture, was developed by the Institute of Optics and Electronics under the auspices of the Chinese Academy of Sciences. It captured the first batch of high-resolution images of the solar atmosphere on Dec. 10, 2019.
Solar storms are the source of space weather disasters, which can lead to communication interruptions, large-scale power outages, information security accidents, and damage to spacecraft. The electromagnetic radiation, and solar proton events formed by solar storms can travel toward Earth at or near light speed.
Therefore, solar storm warnings are important to avoid damage and losses, said Rao Changhui, a lead researcher of the solar telescope project.
In late April 2020, Rao's team in Chengdu, southwest China's Sichuan Province, used the telescope to observe solar active regions and obtained more than an hour's worth of high-resolution data of the solar atmosphere.
"The 1.8-m solar telescope can discover the precursory characteristics of solar storms as early as possible, providing strong data support for solar storm warnings and solar physics research," Rao said.
According to Rao, as solar activities are increasingly frequent, space weather events will become more severe. In the future, the solar telescope, equipped with systems for magnetic field detection and velocity field detection, will make more contributions to the high-resolution detection of the solar atmosphere.
Many countries have stepped up efforts to build 2-meter and larger solar telescopes in recent years. The world's large solar telescopes include the 1.6-meter GST in the United States and the 1.5-meter GREGOR in Germany.
The U.S. 4-meter solar telescope, DKIST, has not yet been put into operation, and design and development on the European 4-meter EST has just begun.
Previous to the CLST, the largest solar telescope in China was the 1-meter New Vacuum Solar Telescope, developed by the academy's Yunnan Observatories.
Source: Xinhua| 2020-06-22 18:43:47|Editor: huaxia
BEIJING, June 22 (Xinhua) -- A Chinese large solar telescope has recently captured images of the sun's surface with details, indicating that this optical instrument can detect solar storm warnings, said scientists.
The Chinese Large Solar Telescope (CLST), with a 1.8-meter aperture, was developed by the Institute of Optics and Electronics under the auspices of the Chinese Academy of Sciences. It captured the first batch of high-resolution images of the solar atmosphere on Dec. 10, 2019.
Solar storms are the source of space weather disasters, which can lead to communication interruptions, large-scale power outages, information security accidents, and damage to spacecraft. The electromagnetic radiation, and solar proton events formed by solar storms can travel toward Earth at or near light speed.
Therefore, solar storm warnings are important to avoid damage and losses, said Rao Changhui, a lead researcher of the solar telescope project.
In late April 2020, Rao's team in Chengdu, southwest China's Sichuan Province, used the telescope to observe solar active regions and obtained more than an hour's worth of high-resolution data of the solar atmosphere.
"The 1.8-m solar telescope can discover the precursory characteristics of solar storms as early as possible, providing strong data support for solar storm warnings and solar physics research," Rao said.
According to Rao, as solar activities are increasingly frequent, space weather events will become more severe. In the future, the solar telescope, equipped with systems for magnetic field detection and velocity field detection, will make more contributions to the high-resolution detection of the solar atmosphere.
Many countries have stepped up efforts to build 2-meter and larger solar telescopes in recent years. The world's large solar telescopes include the 1.6-meter GST in the United States and the 1.5-meter GREGOR in Germany.
The U.S. 4-meter solar telescope, DKIST, has not yet been put into operation, and design and development on the European 4-meter EST has just begun.
Previous to the CLST, the largest solar telescope in China was the 1-meter New Vacuum Solar Telescope, developed by the academy's Yunnan Observatories.
Galactic Penguin SST
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Shijian 16-01 实践十六号01星
Shijian 16-01 was launched on 25 October 2013, followed by 16-02 on June 2016 on the CZ-4B from Jiuquan. Shijian 16-01 used the unusual orbital inclination of 75 degrees and raised its apogee twice in July 2015 and again in May 2016 to reach an orbit of 600-625 km, 96.96 minutes. It possibly used the Fengyun 1 bus. Shijian 16-02 raised its orbit three months later to one similar to 90 degrees ahead of Shijian 16-01. Its behavior would be most typical of an electronic intelligence mission. Again, further details are not available.
China in Space: The Great Leap Forward, By Brian Harvey
https://books.google.com/books/cont...sig=ACfU3U2WEilmTryXPSd8XRGx38t1BwQYUA&w=1280
https://books.google.com/books/cont...sig=ACfU3U17JdwKPYRhCLACGew-uzQOLdLEgQ&w=1280
NORAD ID: 39358
Int'l Code: 2013-057A
Perigee: 606.3 km
Apogee: 631.1 km
Inclination: 75.0 °
Period: 96.9 minutes
Semi major axis: 6989 km
RCS: Unknown
Launch date: October 25, 2013
Source: People's Republic of China (PRC)
Launch site: Jiuquan Satellite Launch Center, China (JSC)
The Shijian-16 satellite is used for conducting spacial environment detection and technological experiments.
http://www.china.org.cn/photos/2013-10/25/content_30405901_5.htm
__________________________
The latest attempt to catch the most elusive Iranian Noor-1 satellite and its mysterious 3rd stage QASED R/B (Arash 24 solid motor) was unsuccessful due to the proximity of the dawn, but the frame has easily captured along the much brighter Indian space zombie, or what is now left of the wreckage of the late IRS P3 Remote sensing satellite, with a large RCS of 2.718 m2, the mysterious Chinese Shijian-16.
Very high noise level of the camera sensor caused by the current record heatwave (38C degrees in the arctic this week or 17C degrees above the average June level).
http://archive.vn/kkbVS/bd559e03a9b6fb8c9bd4003557045a7b76382f48.jpg ; https://archive.vn/kkbVS/03f84871140ce74de6d28c32ca7bc28d2b4c09cb/scr.png ; http://web.archive.org/web/20200626211724/https://i.imgur.com/doZzeV5.jpg
▲ 2. Shijian-16 pass: Magnitude ~3.9 (d), Altitude ~607 km, Distance ~1046 km, Size ~4 m x 2 m, Angular size ~00.8''.
Shijian-16 pass caught on camera a couple of nights ago:
http://archive.is/po1bI/618c1ae43f6b914dec09d1ae1c1c656c161d60c2.jpg ; https://archive.is/po1bI/4decf5b309400b46b1e955ee4cc69779a4bbbd9c/scr.png ; http://nova.astrometry.net/image/8626079 ; http://nova.astrometry.net/user_images/3776717#original
▲ 3. Shijian-16 pass as captured on camera.
TAGS:
BGUSAT, Kwangmyongsong-4, GOSAT-2, Yaogan 25A/25B/25C, FIA-Radar 5, KWANGMYONGSONG R/B, IRS P3, Shijian-16
Shijian 16-01 was launched on 25 October 2013, followed by 16-02 on June 2016 on the CZ-4B from Jiuquan. Shijian 16-01 used the unusual orbital inclination of 75 degrees and raised its apogee twice in July 2015 and again in May 2016 to reach an orbit of 600-625 km, 96.96 minutes. It possibly used the Fengyun 1 bus. Shijian 16-02 raised its orbit three months later to one similar to 90 degrees ahead of Shijian 16-01. Its behavior would be most typical of an electronic intelligence mission. Again, further details are not available.
China in Space: The Great Leap Forward, By Brian Harvey
https://books.google.com/books/cont...sig=ACfU3U2WEilmTryXPSd8XRGx38t1BwQYUA&w=1280
https://books.google.com/books/cont...sig=ACfU3U17JdwKPYRhCLACGew-uzQOLdLEgQ&w=1280
NORAD ID: 39358
Int'l Code: 2013-057A
Perigee: 606.3 km
Apogee: 631.1 km
Inclination: 75.0 °
Period: 96.9 minutes
Semi major axis: 6989 km
RCS: Unknown
Launch date: October 25, 2013
Source: People's Republic of China (PRC)
Launch site: Jiuquan Satellite Launch Center, China (JSC)
The Shijian-16 satellite is used for conducting spacial environment detection and technological experiments.
http://www.china.org.cn/photos/2013-10/25/content_30405901_5.htm
__________________________
The latest attempt to catch the most elusive Iranian Noor-1 satellite and its mysterious 3rd stage QASED R/B (Arash 24 solid motor) was unsuccessful due to the proximity of the dawn, but the frame has easily captured along the much brighter Indian space zombie, or what is now left of the wreckage of the late IRS P3 Remote sensing satellite, with a large RCS of 2.718 m2, the mysterious Chinese Shijian-16.
Very high noise level of the camera sensor caused by the current record heatwave (38C degrees in the arctic this week or 17C degrees above the average June level).
http://archive.vn/kkbVS/bd559e03a9b6fb8c9bd4003557045a7b76382f48.jpg ; https://archive.vn/kkbVS/03f84871140ce74de6d28c32ca7bc28d2b4c09cb/scr.png ; http://web.archive.org/web/20200626211724/https://i.imgur.com/doZzeV5.jpg
▲ 2. Shijian-16 pass: Magnitude ~3.9 (d), Altitude ~607 km, Distance ~1046 km, Size ~4 m x 2 m, Angular size ~00.8''.
Shijian-16 pass caught on camera a couple of nights ago:
http://archive.is/po1bI/618c1ae43f6b914dec09d1ae1c1c656c161d60c2.jpg ; https://archive.is/po1bI/4decf5b309400b46b1e955ee4cc69779a4bbbd9c/scr.png ; http://nova.astrometry.net/image/8626079 ; http://nova.astrometry.net/user_images/3776717#original
▲ 3. Shijian-16 pass as captured on camera.
TAGS:
BGUSAT, Kwangmyongsong-4, GOSAT-2, Yaogan 25A/25B/25C, FIA-Radar 5, KWANGMYONGSONG R/B, IRS P3, Shijian-16
Daniel808
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For this month Mars Mission, the Long March 5 rocket already there since few months ago.
This month, they will shipping the rocket for Q4 2020 Moon Sample Mission
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