China's Space Program News Thread

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Figaro

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Chinese cargo spacecraft completes automated fast-docking with space lab

2017-09-13 08:35

Xinhua Editor: Gu Liping

China's first cargo spacecraft, Tianzhou-1, completed an automated fast-docking with Tiangong-2 space lab at 11:58 p.m. Tuesday.

Controlled from Earth, Tianzhou-1 began to approach Tiangong-2 at 5:24 p.m. Tuesday and it took six and a half hours to complete the fast-docking with the space lab.

It was the third docking between the two spacecraft using fast-docking technology. Previously, it took about two days to dock.

The experiment tested the cargo spacecraft's capability of fast-docking, laying a foundation for future space station building.

Tianzhou-1 was launched on April 20 from south China's Hainan Province, and it completed the first and second docking with the orbiting Tiangong-2 space lab on April 22 and June 19, respectively.

The cargo spacecraft will conduct the third refueling of the space lab before returning to Earth.

The two spacecraft completed their first in-orbit refueling on April 27 and their second in-orbit refueling on June 15.

China is the third country, after Russia and the United States, to master refueling techniques in space, which is crucial in the building of a permanent space station.

Tiangong-2, which was sent into space on Sept. 15, 2016, is China's first space lab "in the strict sense" and a key step in building a permanent space station.

Cargo ships play a crucial role maintaining a space station and carrying supplies and fuel into orbit.

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China's cargo spacecraft completes third in-orbit refueling
(
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) 09:00, September 17, 2017

China's Tianzhou-1 cargo spacecraft and Tiangong-2 space lab completed their third and last in-orbit refueling at 8:17 p.m. Saturday.

The third refueling, lasting about three days, confirmed the technical results from the second refueling.

Tianzhou-1, China's first cargo spacecraft, was launched on April 20 from south China's Hainan Province, and it completed automated docking with the orbiting Tiangong-2 space lab on April 22.

The two spacecraft completed their first in-orbit refueling on April 27 and second on June 15.

In the past five months, Tianzhou-1 has operated smoothly and completed various tasks.
 

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China's aerospace industry
China on overtaking lane for aerospace technology development
By Jiang Jie (
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) 14:24, September 20, 2017

China is now on the overtaking lane of aerospace technology development and is poised to become a major aerospace power in the world, a noted Chinese academician said Tuesday.

Chinese Academy of Engineering academician Wu Weiren, who is also the chief designer of China’s lunar exploration program, said at the 3rd China Aeronautical Science and Technology Conference (CASTC) that China is no longer a mere follower in the world’s arena on aerospace technology, but a leader in many areas.

The two-day CASTC 2017 opened on Tuesday on the sideline of this year’s Aviation Expo China in Beijing.

The rapid growth of the nation’s aerospace technology development can be felt in the development of the country’s carrier rockets. Since 1970, when China launched its first carrier rocket the Long March-1, Chinese scientists have conducted 250 carrier rocket launches as of September, with a 97 percent success rate, according to Wu.

“We used 37 years to complete the first 100 launches, but only seven years for the second 100,” Wu praised, adding that the launch of Long March-5 carrier rocket, with a maximum load capacity of 25 tons, also led China to a new era of heavy-lift rocket.

As for manned missions, Wu said China would be only country with a space lab in orbit by 2024. That same year, Chinese astronauts will be able to collect some two kilograms of soil from the moon. The space lab is scheduled for 2020, when China’s navigation system Beidou will cover all regions in the world.

Currently, China ranks second in the world in terms of the number of orbiting satellites, with a total of 171 satellites out of over 1,400 of those in space. The US has more than 590 satellites on orbit, Wu noted.

China’s remarkable satellite development, including high throughput satellites that can deliver 20GB bandwidth and remote sensing satellites with resolution ratio below one meter, have also become popular made-in-China product in the overseas market.

The nation has conducted 49 commercial satellites launches for other countries, and 14 of China’s homemade satellites have been exported overseas. In general, the China National Space Administration already inked 117 cooperation deals with 37 countries and four international organizations, Wu said.

With the advancement in China’s aerospace industry, the manufacturing capacity has been greatly strengthened. The country is now capable of manufacturing 30 rockets or 40 satellites in a year under independent research and development, he added.

Specifically, China has been witnessing a rising number of research projects focused on new engine types over the past decades. The number of new engines under research in the past 10 years was three times of that of the US, Xiang Qiao, general manager assistant of Aero Engine Corporation, revealed at CASTC.

Achievements in the aerospace industry have also benefited other industries. More than 2,000 technology results have been applied for civil uses, and 80 percent of the new materials used in civil projects came from the industry, according to Wu.

However, the academician also warned that China is the only major aerospace power without aerospace law, which should be promulgated.

China is putting more emphasis on the industry. It also set up an aerospace awareness day on every April 24, starting from 2016. By 2050 - the third and final goal in the three-step aerospace plan of China, Chinese scientists may have already landed on Mars and there might be a research and development base on the moon, while Chinese scientists would be able to explore as far as 10 billion kilometers away from the Earth, Wu envisioned.
 

Figaro

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Tsinghua micro-satellite ...
Tsinghua University to study Gamma-ray bursts by microsatellites
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) 17:29, September 22, 2017
China's Tsinghua University has unveiled a plan to launch 24 microsatellites between 2018 and 2023 to detect short Gamma-ray bursts and help the study of gravitational waves.

This program was jointly initiated by the university and Spacety Research Institute, a Chinese space technology company, according to the university on Friday.

Short Gamma-ray bursts are considered to be electromagnetic counterparts to gravitational waves, the ripples in the fabric of space-time caused by violent collisions in the universe predicted by Albert Einstein's general theory of relativity.

In 2016, the Laser Interferometer Gravitational-Wave Observatory (LIGO) in the United States announced the first observation of gravitational waves.

Scientists believe that more accurate measuring and study of gravitational waves will help in exploring the origin of the universe.

As part of the program, microsatellites, also known as cube satellites, will carry scintillation detectors to detect and locate short Gamma-ray bursts and narrow the search scope for gravitational waves, said Feng Hua, a professor at the Tsinghua Center for Astrophysics.

Feng said the program was first proposed by students and it has completed an initial scientific appraisal.

Spacety is in charge of the majority of engineering work for the program, according to Yang Feng, CEO of Spacety.

Research and production for the first satellite for technical testing will be finished by the end of this year and is expected to be launched in 2018, Yang said.
 

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Meanwhile, China's cargo spacecraft leaves orbit ...
China's cargo spacecraft leaves orbit
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) 19:57, September 22, 2017

China's first cargo spacecraft, Tianzhou-1, left its orbit under orders from ground control around 6 p.m. Friday.

The cargo ship twice put on the breaks, continuously lowering its altitude before burning-up in the atmosphere, all under precise control and close monitoring from the ground.

Before leaving orbit, Tianzhou-1 had completed a number of experiments, gaining important experience for the building and operating of China's space station.

Tianzhou-1 was launched on April 20 from south China's Hainan Province, and completed automated docking with the orbiting Tiangong-2 space lab on April 22.

The two spacecraft completed their first in-orbit refueling on April 27, a second refueling on June 15 and a final one on September 16. In the past five months, Tianzhou-1 has operated smoothly, completing various tasks.
 
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