China Space Military：Recon, Satcom, Navi, ASAT/BMD, Orbital Vehicle, SLV, etc.
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Götterdämmerung
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Congratulation to China and all Chinese!
yantong1980
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I came, I saw, I congrats to China!
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A peek inside AIT Center, hub of China's spacecraft development
China acquires basic technology for manned lunar missions: chief engineer
Source: Xinhua 2016-09-16 01:04:55
JIUQUAN, Sept. 15 (Xinhua) -- China has acquired the basic technology to carry out manned lunar missions, chief engineer of China's manned space program Zhou Jianping said Thursday.
Compared with current missions, the technology used for manned lunar missions are more complex, Zhou said.
In order to achieve the goal of carrying out manned lunar missions, China needs rockets with greater load capacity, manned aircraft that can land on the lunar surface and return, and aircraft that can shuttle between Earth and the moon, Zhou said.
In addition, Zhou disclosed that the Wenchang Satellite Launch Center in southern China's Hainan Province is likely to be the second launch site for China's manned space program.
China's space station and cargo spacecraft will be launched at the Wenchang launch site, Zhou said, adding that from a technical perspective it is better to carry out manned lunar missions at the Wenchang site.
Completed in 2014, the Wenchang launch site is the fourth of its kind in China. Being the closest site to the equator, Wenchang boasts considerable latitudinal advantages. Satellites launched nearer the equator have a longer service life as they have a shorter journey to make it into geostationary orbit and save fuel accordingly.
"China has begun to develop a Mars probe, but such exploration will be a very complex project," Zhou added.
General assembly of China's Shenzhou 11 spacecraft finishes
JSCh
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Published on Sep 17, 2016
The installation of the feed cabin of China's single-aperture spherical telescope "FAST" in Pingtang county, southwest China's Guizhou Province was completed on Friday, meaning the telescope is ready to function.
After the installation was completed, the 30-ton-heavy feed cabin, the core part of FAST, was hoisted up to 130 meters above the telescope’s reflector which is the size of 30 football fields.
The cabin is home to a feed source which collects signals from the universe.
"It is the receiver of the FAST and the receiver is the most important part. It receives all the signals collected by FAST. It's as important as the apple of the eye," said Zheng Xiaonian, deputy head of National Astronomical Observatories of China (NAOC).
The feed cabin will be driven by cables and servomechanisms in addition to a parallel robot as a secondary adjustable system to move with high precision.
"We haven't done tests with all the systems ready. Now most of the systems are ready for joint tests. We can do some tests after the feed cabin is hoisted up and can receive some scientific data," said Yue Youling, assistant research fellow at the science department of FAST.
Friday's work marked the completion of the 500-meter aperture spherical telescope (FAST) which will be the world's largest, overtaking Puerto Rico's Arecibo Observatory, which is 300 meters in diameter.
The telescope has now entered the phase of all-system debugging and has started to receive signals of pulsars.
JSCh
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China Exclusive: World's first space cold atom clock
Source: Xinhua 2016-09-19 15:39:16
BEIJING, Sept. 19 (Xinhua) -- The cylinder-shaped black object bears no resemblance to any ordinary clock, but it is one of the most advanced timepieces ever.
It was sent to space with the Space Laboratory of China's Tiangong-2 on Thursday, becoming the first ever cold atom clock working in space.
"This clock is so accurate that it should not lose one second in 30 to 300 million years in space," says Liu Liang, professor and director of the Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences.
Unlike ordinary clocks, the timekeeping device is based on atomic physics.
And unlike the most atomic clocks, this clock uses more advanced "cold atom" technology, ensuring its ultra precision.
A mechanical watch loses almost one second a day; a quartz watch loses about one second every 10 days; the hydrogen atomic clock loses about one second over millions of years; the cold atom clock exceeds all in accuracy, Liu says.
Scientists attribute its accuracy to the microgravity environment in space as well as the coldness of the atoms the clock uses.
Under microgravity conditions, the cold atoms, pushed by lasers, perform a uniform motion in a straight line. By observing their performance, scientists get more precise atomic clock signal than under the gravity conditions on Earth.
Moreover, the laser cooling technology helps to eliminate the influence of atomic thermal motion on the clock's performance.
"Though molecules and atoms can't be seen in a room, they are actually moving at high-speed, and the speed is equivalent to temperature," Liu explains.
"We use laser cooling technology to slow down the atoms to a temperature that a refrigerator could never reach, so they nearly stay still," Liu says. "By observing the almost static atoms we make our measurements more precise."
Scientists believe that putting such a clock in space will help set a time standard to synchronize other atomic clocks in space more precisely.
"A more accurate clock system in space will benefit us on Earth," Liu says, citing possible substantial improvements in navigation and positioning accuracy.
Scientists say the development of cold atom technology could also make many experiments possible, such as deep space navigation and positioning, dark matter probes, and even gravitational wave exploration.
"A lot of research is based on our measurement of time and space. If we could detect subtle changes in time and space, we could make discoveries beyond the range of existing technology," Liu says.
"In the future, there will be more accurate clocks than this cold atom clock and our ultimate goal is to make a clock that will never be a second fast or slow over the life of the universe."
Source: Xinhua 2016-09-19 15:39:16
It was sent to space with the Space Laboratory of China's Tiangong-2 on Thursday, becoming the first ever cold atom clock working in space.
"This clock is so accurate that it should not lose one second in 30 to 300 million years in space," says Liu Liang, professor and director of the Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences.
Unlike ordinary clocks, the timekeeping device is based on atomic physics.
And unlike the most atomic clocks, this clock uses more advanced "cold atom" technology, ensuring its ultra precision.
A mechanical watch loses almost one second a day; a quartz watch loses about one second every 10 days; the hydrogen atomic clock loses about one second over millions of years; the cold atom clock exceeds all in accuracy, Liu says.
Scientists attribute its accuracy to the microgravity environment in space as well as the coldness of the atoms the clock uses.
Under microgravity conditions, the cold atoms, pushed by lasers, perform a uniform motion in a straight line. By observing their performance, scientists get more precise atomic clock signal than under the gravity conditions on Earth.
Moreover, the laser cooling technology helps to eliminate the influence of atomic thermal motion on the clock's performance.
"Though molecules and atoms can't be seen in a room, they are actually moving at high-speed, and the speed is equivalent to temperature," Liu explains.
"We use laser cooling technology to slow down the atoms to a temperature that a refrigerator could never reach, so they nearly stay still," Liu says. "By observing the almost static atoms we make our measurements more precise."
Scientists believe that putting such a clock in space will help set a time standard to synchronize other atomic clocks in space more precisely.
"A more accurate clock system in space will benefit us on Earth," Liu says, citing possible substantial improvements in navigation and positioning accuracy.
Scientists say the development of cold atom technology could also make many experiments possible, such as deep space navigation and positioning, dark matter probes, and even gravitational wave exploration.
"A lot of research is based on our measurement of time and space. If we could detect subtle changes in time and space, we could make discoveries beyond the range of existing technology," Liu says.
"In the future, there will be more accurate clocks than this cold atom clock and our ultimate goal is to make a clock that will never be a second fast or slow over the life of the universe."
Last edited:
JSCh
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Tuesday, September 20, 2016, 10:43
Rocket maker aims high with lofty output targets
By Ma Si and Zhao Lei
CASC Chief Engineer Yang Haicheng told China Daily that in the next five to 10 years the aerospace industry would see huge demand for rockets and satellites.
"If the annual orders triple from 100 billion yuan ($15 billion) to 300 billion yuan, it is impossible for us to triple the amount of employees," he said on the sidelines of a manufacturing forum in Beijing on Friday.
"Instead, we must rely on smart manufacturing to accomplish these tasks."
The Beijing-based company currently has about 180,000 employees, nearly 100,000 of which are researchers and engineers, which has laid down a solid foundation for high-tech manufacturing, Yang added.
People line up to examine a replica of the Tiangong-2 space laboratory at the China Science and Technology Museum in Beijing on Sunday.Chen Xiaogen / For China Daily
CASC is responsible for making China's satellites, missiles, carrier rockets, space station and other aerospace equipment.
In 2015, it recorded an annual revenue of $30.5 billion, the 12.5 percent year-on-year rise catapulting its ranking on the Fortune 500 list to 344th from 437th the previous year.
The production capacity target is part of a broader plan that the Beijing-based group is working on to coordinate its operations with the country's Made in China 2025 initiative, which aims to promote high-end manufacturing in factories nationwide, Yang said
"We also want to shorten the production cycle. In the past, it took three to four years to develop a satellite. Now we are working hard to shorten the process to one year, or even to several months or several days in times of war," he added.
The chief engineer said the aerospace industry involved the most sophisticated and complicated design and production process, which the company wanted to simplify by putting all of it online.
"We are eyeing a transition from total self-reliance to building an open platform where we will seek resources and partnership from other international players," Yang added.
"We will focus not only on design and production but also on operations and services."
Wang Ya'nan, editor-in-chief of Aerospace Knowledge magazine, said China's aerospace industry had entered a rapid growth stage that required space enterprises to undertake more innovation in terms of research, development and production techniques.
"The government has placed high importance on the space-based information system, deep-space and lunar exploration program and manned space activities. It is also boosting the commercial space sector to compete with other space powers such as the United States," he said.
Jing Shuiyu contributed to this story.
Rocket maker aims high with lofty output targets
By Ma Si and Zhao Lei
People line up to examine a replica of the Tiangong-2 space laboratory at the China Science and Technology Museum in Beijing on Sunday. (Chen Xiaogen / For China Daily)
China Aerospace Science and Technology Corp aims to "double or even triple" its annual production capacity by 2025 while without adding new employees - as the State-owned satellite and rocket maker ratchets up efforts to achieve smart and flexible manufacturing - its chief engineer said.
CASC Chief Engineer Yang Haicheng told China Daily that in the next five to 10 years the aerospace industry would see huge demand for rockets and satellites.
"If the annual orders triple from 100 billion yuan ($15 billion) to 300 billion yuan, it is impossible for us to triple the amount of employees," he said on the sidelines of a manufacturing forum in Beijing on Friday.
"Instead, we must rely on smart manufacturing to accomplish these tasks."
The Beijing-based company currently has about 180,000 employees, nearly 100,000 of which are researchers and engineers, which has laid down a solid foundation for high-tech manufacturing, Yang added.
People line up to examine a replica of the Tiangong-2 space laboratory at the China Science and Technology Museum in Beijing on Sunday.Chen Xiaogen / For China Daily
CASC is responsible for making China's satellites, missiles, carrier rockets, space station and other aerospace equipment.
In 2015, it recorded an annual revenue of $30.5 billion, the 12.5 percent year-on-year rise catapulting its ranking on the Fortune 500 list to 344th from 437th the previous year.
The production capacity target is part of a broader plan that the Beijing-based group is working on to coordinate its operations with the country's Made in China 2025 initiative, which aims to promote high-end manufacturing in factories nationwide, Yang said
"We also want to shorten the production cycle. In the past, it took three to four years to develop a satellite. Now we are working hard to shorten the process to one year, or even to several months or several days in times of war," he added.
The chief engineer said the aerospace industry involved the most sophisticated and complicated design and production process, which the company wanted to simplify by putting all of it online.
"We are eyeing a transition from total self-reliance to building an open platform where we will seek resources and partnership from other international players," Yang added.
"We will focus not only on design and production but also on operations and services."
Wang Ya'nan, editor-in-chief of Aerospace Knowledge magazine, said China's aerospace industry had entered a rapid growth stage that required space enterprises to undertake more innovation in terms of research, development and production techniques.
"The government has placed high importance on the space-based information system, deep-space and lunar exploration program and manned space activities. It is also boosting the commercial space sector to compete with other space powers such as the United States," he said.
Jing Shuiyu contributed to this story.
JSCh
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'FAST' telescope starts operation in Guizhou
(chinadaily.com.cn) Updated: 2016-09-25 08:42
The world's largest single-aperture spherical telescope, "FAST", starts operation in a karst valley in Pingtang county, Guizhou province, on Sunday. The size of 30 football fields, the 500-meter Aperture Spherical Telescope dwarfs Puerto Rico's 300-meter Arecibo Observatory. Construction began in March 2011 at a cost of 1.2 billion yuan ($179 million).
This scene taken from FAST's viewing platform shows the panorama of the 500-meter Aperture Spherical Telescope in Pingtang county, Guizhou province, Sept 24, 2016. [Photo/Xinhua]
Visitors pose for photo on the viewing platform of "FAST", the 500-meter Aperture Spherical Telescope, in Pingtang county, Guizhou province, Sept 24, 2016. [Photo/Xinhua]
A model of the solar system is displayed at "FAST", China's Single-Aperture Spherical telescope, in Pingtang county, Guizhou province, Sept 24, 2016. [Photo/Xinhua]
China's single-aperture spherical telescope "FAST", in Pingtang county, Guizhou province, Sept 24, 2016. [Photo/Xinhua]
China's single-aperture spherical telescope "FAST", in Pingtang county, Guizhou province, Sept 24, 2016.
This scene shows the panorama of the 500-meter Aperture Spherical Telescope in Pingtang county, Guizhou province, Sept 24, 2016. [Photo/Xinhua]
This scene shows the panorama of the 500-meter Aperture Spherical Telescope in Pingtang county, Guizhou province, Sept 7, 2016. [Photo/Xinhua]
(chinadaily.com.cn) Updated: 2016-09-25 08:42
The world's largest single-aperture spherical telescope, "FAST", starts operation in a karst valley in Pingtang county, Guizhou province, on Sunday. The size of 30 football fields, the 500-meter Aperture Spherical Telescope dwarfs Puerto Rico's 300-meter Arecibo Observatory. Construction began in March 2011 at a cost of 1.2 billion yuan ($179 million).
China's single-aperture spherical telescope "FAST", in Pingtang county, Guizhou province, Sept 24, 2016.
onebyone
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Testing starts on all space application systems of Tiangong 2
Tiangong-2 space lab enters preset orbit for docking with manned spacecraft
Source: Xinhua 2016-09-25 21:45:03
BEIJING, Sept. 25 (Xinhua) -- Chinese scientists on Sunday maneuvered the country's Tiangong-2 space lab to a preset orbit 393 kilometers above Earth's surface, in preparation for a planned docking with the Shenzhou-11 manned spacecraft set to launch next month.
Tiangong-2, which blasted off from the Jiuquan Satellite Launch Center on the back of a Long March-2F T2 rocket on Sept. 15, has already gone through about nine days of on-orbit testing before Sunday's maneuver, according to Li Jian, deputy head of the Beijing Aerospace Control Center.
"All test results suggest the space lab is in good condition," Li said.
Earlier reports said China's future space station, which the country plans to put into service around 2022, will also be orbiting the Earth at approximately the same height - 393 kilometers above ground.
The Shenzhou-11 manned spacecraft is expected to carry two astronauts into space to dock with the Tiangong-2 in October. The astronauts will work in the lab for 30 days before returning to Earth.
Li said the docking will be the country's first-ever simulation of future space station docking technologies, which will see the manned spacecraft "catching up with the space station using its own space maneuvering capacities."
In April 2017, China's first space cargo ship Tianzhou-1, which literally means heavenly vessel, will also be sent into orbit to dock with the space lab, providing it with fuel and other supplies.
http://news.xinhuanet.com/english/2016-09/25/c_135712721.htm
Scientific experiment apparatus on Tiangong-2 put into operation
Source: Xinhua 2016-09-24 11:34:14
BEIJING, Sept. 24 (Xinhua) -- Scientific apparatus carried by Tiangong-2 began operational at around 6:41 p.m. Thursday Beijing Time after being on standby mode for nearly seven days since the space lab entered its preset orbit on Sept. 15.
"Most of the scientific payload will be put into operation in the next 30 hours," said Guo Lili, director with the payload operation and application center at the Technology and Engineering Center for Space Utilization under the Chinese Academy of Sciences.
Nearly 100 ground operators, including staff from the operation and application center, payload developers and subscribers to related applications, are coordinating in the operation.
The space lab of Tiangong-2 will dock with the Shenzhou-11 manned spacecraft later this year and the country's first cargo space ship Tianzhou-1 in 2017, according to experts.
Its predecessor Tiangong-1, which was launched in 2011 and docked with the Shenzhou-8, Shenzhou-9 and Shenzhou-10 spaceships, was mainly used to verify technology involved in space docking and serve as a simple platform for a number of scientific experiments, said Wu Ping, deputy director of China's manned space engineering office.
In comparison, Tiangong-2 hosts many more experiments and is taken as China's first space lab "in the strict sense."
Its payloads include POLAR, a collaboration between Swiss, Polish and Chinese institutions to study gamma ray bursts, and a cold atomic space clock, which scientists say only loses one second in about 30 million years.
Also piggybacking on the Tiangong-2 launch is a robotic arm that can be used for on-orbit repairs, and a micro satellite that will orbit close to the space lab and snap on to Tiangong-2 and the visiting Shenzhou-11 spacecraft crew.
http://news.xinhuanet.com/english/2016-09/24/c_135710370.htm
China's space survival experiment goes on well
Source: Xinhua 2016-09-20 22:35:24
BEIJING, Sept. 20 (Xinhua) -- China's experiment in human living for space exploration is going smoothly, halfway into the project, the Astronaut Center of China (ACC) announced Tuesday.
Four volunteers started a 180-day experiment in June in a sealed space capsule, testing technology that will be used in deep-space exploration.
The experiment examines how oxygen, water and food can be used and reused in space.
The ACC has used Mars time with 24 hours and 40 minutes in a day in the experiment since Aug. 26.
Scientists are also examining the physiological changes and emotional fluctuations brought by a hermetic environment.
A total of 25 kinds of plants in the capsule as part of a larger ecological treatment system are also growing well.
The experiment will conclude on Dec. 13.
http://news.xinhuanet.com/english/2016-09/20/c_135700743.htm
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