China's Space Program News Thread

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Colonel
The test moon probe is going for a half moon orbit, after all. One of the main purpose of the mission is to test reentry module technologies.

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China launches test return orbiter for lunar mission

XICHANG, Sichuan, Oct. 24 (Xinhua) -- China launched an unmanned spacecraft early Friday to test technologies to be used in the Chang'e-5, a future probe that will conduct the country's first moon mission with a return to Earth.

The lunar orbiter was launched atop an advanced Long March-3C rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province.

The test spacecraft separated from its carrier rocket and entered the expected the orbit shortly after the liftoff, according to the State Administration of Science, Technology and Industry for National Defense.

The whole mission will take about eight days. Developed by China Aerospace Science and Technology Corporation, the spacecraft will fly around the moon for half a circle and return to Earth.

On its return, the test spacecraft will approach the terrestrial atmosphere at a velocity of nearly 11.2 kilometers per second and rebound to slow down before re-entering the atmosphere. It will land in north China's Inner Mongolia Autonomous Region.

The mission is to obtain experimental data and validate re-entry technologies such as guidance, navigation and control, heat shield and trajectory design for a future touch-down on the moon by Chang'e-5, which is expected to be sent to the moon, collect samples and return to Earth in 2017.

It is the first time China has conducted a test involving a half-orbiter around the moon at a height of 380,000 kilometers before having the spacecraft return to Earth.

The test orbiter is a precursor to the last phase of a three-step moon probe project, a lunar sample return mission.

China carried out Chang'e-1 and Chang'e-2 missions in 2007 and 2010, respectively, capping the orbital phase.

The ongoing second phase saw Chang'e-3 with the country's first moon rover Yutu onboard succeed in soft landing on the moon in December 2013. Chang'e-4 is the backup probe of Chang'e-3 and will help pave the way for future probes.
 
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getready

Senior Member
Beidou system poised to spread wings
China Daily/Asia News Network | Fri, Oct 24, 2014
CHINA - China's Beidou navigation satellite system, whose positioning accuracy will reach 2.5 meters by 2020, will soon provide services to more countries.

The National Administration of Surveying, Mapping and Geoinformation said China will cooperate with several countries, including Mexico, Israel and Sweden, to improve establishment of the Beidou system and geoinformation database.

International cooperation and establishing monitoring stations in foreign countries are essential for improving the accuracy of the system, said Li Pengde, the administration's deputy director.

"The system now covers the Asia-Pacific region, but by 2020 it will cover the whole world," Li said at the third United Nations global geo-spatial information management forum, being held in Beijing from Wednesday to Friday.

Miao Qianjun, executive vice-president of the Global Navigation Satellite System and Location-Based Service Association of China, said the country will cooperate with Singapore, Malaysia and other Asian countries to promote the Beidou system.

"This year, China has worked with some Southeast Asian countries to promote the system, including Thailand, Pakistan and Laos," Miao said. "Next year will be essential for expanding the system in the Asia-Pacific region."

In July, China and Russia signed a memorandum of understanding on the joint application of the Beidou Navigation Satellite System and Russia's Glonass system, allowing the two nations to establish navigation system monitoring stations in each country from this year.

"Beidou system equipment has been sold to more than 30 countries," said a deputy director of the Navigation Satellite System and Location-Based Service Association of China, who asked not to be named.

"In 2013, the output value of the satellite navigation industry reached 104 billion yuan (S$21.68 billion) in China, while only one-tenth came from the domestically made system," the industry insider said, adding that Beidou occupies only 1 per cent of the Asia-Pacific market.

"Compared with some other systems, Beidou hasn't been put into commercial use for a long time," he said. "It needs time to develop and promote itself."

Beidou, the United States' GPS, the European Union's Galileo and Russia's Glonass are the navigation system suppliers authorised by the UN.

The Beidou system has been installed in more than 200 car models in China and its chips have been embedded in 40 million smartphones.

The system now has 16 satellites and plans to establish a global coverage network through 36 geostationary orbit and non-geostationary orbit satellites by 2020.
 

antiterror13

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MOSCOW, June 3. /ITAR-TASS/. China plans to complete the development of its national navigation satellite system BeiDou ahead of schedule - by 2017, and not in 2020 as it was previously announced, the Central Research Machinebuilding Institute of the Russian Space Agency said Tuesday.
As far as Russian satellite navigation is concerned, a second GLONASS K1 satellite will be launched before the end of this year, and the first satellite of the K2 generation, aimed for the transmission of Code Division Multiple Access (CDMA) signals, is now in the production phase.
Meanwhile, American GPS and European Galileo navigation systems still experience delays in launch and modernization, researchers say. The launch of the first American GPS III satellite will not occur until 2016, while the completion of the next-generation operational control segment (OCX) is now slated for 2017, a couple of years later than originally planned. The earliest launches of Galileo satellites are to be expected in August, November and December this year. In all, Galileo, which was elaborated by the EU and European Space Agency, should embark 30 satellites by 2016.
China launched its regional positioning BeiDou system in 2012. It requires 35 satellites in total. BeiDou frequency bands do not correlate with those of American and French systems. Therefore, China foresees good prospects for cooperation with Russia’s GLONASS on regional support and chipsets development, which actually means working on mutual navigation compatibility.
Russia expects an agreement with China, which will allow the countries to build three ground operational stations on each other’s territories, for GLONASS needs to place satellites on three orbits, as every single satellite has its own frequency. At the moment the system includes 24 operating satellites and four more on standby.
At the same time Russia has suspended the operation of all 11 GPS stations on its territory since June 1 due to poor progress in Russia-US talks over the construction of Russian ground stations in the United States. This is a disadvantage for the Pentagon GPS, for some billion people around the world are using the system and it requires 24 single-frequency satellites in six orbits.
 

Lethe

Captain
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has an unremarkable article about China's latest moon mission, but one paragraph piqued my interest:

Publicity for this mission has been unusually tight, even by the typically guarded standards of the Chinese space program. This seems to be a trend, judging by recent missions. Perhaps China wants to advance further without tipping off America to its growing achievements.

I have been wondering about this myself. After all, being the first nation to put humans on Mars would be the ultimate statement of China's status in the world, just as the Apollo landings were for the United States in 1969. But for the next decade, if the US were to turn its national attention to such a task, they would likely beat China to Mars. It seems to me that this gives China a motive to progress softly, softly, so as not to provoke an expression of pride from the United States in this way until it is too late.
 

mr.bean

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has an unremarkable article about China's latest moon mission, but one paragraph piqued my interest:



I have been wondering about this myself. After all, being the first nation to put humans on Mars would be the ultimate statement of China's status in the world, just as the Apollo landings were for the United States in 1969. But for the next decade, if the US were to turn its national attention to such a task, they would likely beat China to Mars. It seems to me that this gives China a motive to progress softly, softly, so as not to provoke an expression of pride from the United States in this way until it is too late.

i don't know why that article says coverage has been tight because I've seen about 30 different clips of news reports in detail about this launch on youtube all in Chinese. from launch to interviews with various experts to people who are involved with the different systems it's all there. I subscribe to 20 different Chinese news channels on youtube and i'm flooded with clips to watch.
 

Hytenxic

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I think its just a case of being a "test" mission for a future proper mission. Maybe they just thought it was not that important to stream live. People are reading too much into this.
 
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