Author Topic: China's space program  (Read 415654 times)

Offline zandr

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Re: China's space program
« Reply #880 on: 01/29/2019 06:57 pm »
http://www.xinhuanet.com/english/2019-01/30/c_137784830.htm
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Roundup: China to send over 50 spacecraft into space via over 30 launches in 2019
Source: Xinhua| 2019-01-30 00:22:18|Editor: yan
BEIJING, Jan. 29 (Xinhua) -- China is going to send more than 50 spacecraft into space via over 30 launches this year, according to the China Aerospace Science and Technology Corporation (CASC) on Tuesday.
The major missions include the third Long March-5 large carrier rocket to be launched in July, said Yang Baohua, vice president of the CASC, at a press conference.
The second Long March-5 rocket was launched from the Wenchang Space Launch Center in the southern province of Hainan on July 2, 2017, but a malfunction happened less than six minutes after its liftoff.
The cause of the failure has been found, Yang said.
If the third flight is successful, the fourth Long March-5 carrier rocket will be tasked to send the Chang'e-5 lunar probe to the moon to bring lunar samples back to Earth at the end of 2019, he said.
More details about the Chang'e-5 probe were also unveiled at the press conference.
The probe will first enter the Earth-moon transfer orbit. It will then slow near the moon to enter the lunar orbit and descend and land on a pre-selected area for ground research work, including collecting lunar samples, said Peng Jing, deputy chief designer of the probe from the China Academy of Space Technology.
After finishing its work on the moon, the ascender will rise from the lunar surface for rendezvous and docking with the orbiter flying around the moon. Then the returner will fly back to Earth via the Earth-moon transfer orbit, reenter the atmosphere and land at the Siziwang Banner (County) of Inner Mongolia Autonomous Region, Peng said.
The lunar samples taken back by the Chang'e-5 probe will be sealed in a container and sent to labs for further analysis and research, he added.
The probe can be divided into 15 sub-systems, including structure, thermal control, antenna, sample collecting and sealing and propulsion. It is composed of an orbiter, a returner, a lander and an ascender.
In addition, joint tests and exercises will be carried out in the Wenchang Space Launch Center at the end of 2019 to make preparations for the maiden flight of the Long March-5B, which will help lay the groundwork for the construction of the space station, said Shang Zhi, director of the Department of Space under CASC.
A test version of the Long March-5B carrier rocket, which will serve China's manned space exploration mission, is now under development, and the research and development of the core module of the country's space station have carried on as planned, Shang said.
The Long March-5B rocket, with a low-Earth orbit carrying capacity greater than 22 tonnes, will be used to launch the core module and experiment modules of China's space station in the future.
China will also send 10 satellites to join the BeiDou Navigation Satellite System (BDS) through seven separate launches this year, which will help complete the BDS global network by 2020, Shang said.
According to the Blue Book of China Aerospace Science and Technology Activities released at the press conference, a total of 18 BeiDou satellites were launched in 2018, marking the completion of the BDS-3 primary system. The navigation system has started to provide global service.
China will also launch a new Earth observation satellite, Gaofen-7, and witness its first sea-launch by the Long March-11 rocket, Shang added.

Offline SciNews

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Re: China's space program
« Reply #881 on: 01/30/2019 09:25 am »
China’s space plans for 2019

"two launches will be operated at Wenchang center, and one more launch at sea"
"launch of the Long March-5 Y3 is scheduled around July"
"Chang'e-5 will be launched at the end of the year"

Offline zandr

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Re: China's space program
« Reply #882 on: 01/30/2019 01:14 pm »
http://www.xinhuanet.com/english/2019-01/30/c_137787073.htm
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China plans first rocket launch at sea
BEIJING, Jan. 30 (Xinhua) -- China's first seaborne rocket launch is scheduled for mid 2019 with a Long March-11 carrier rocket set to blast off in the Yellow Sea, said Jin Xin, deputy chief commander of the rocket.
China has achieved a breakthrough in the key technologies for seaborne launches, Jin, of the China Academy of Launch Vehicle Technology, told a press conference by the China Aerospace Science and Technology Corporation on Tuesday.
The Long March-11, with a length of 20.8 meters and a takeoff weight of about 57.6 tonnes, is the only rocket using solid propellants among China's new generation carrier rockets. It has a relatively simple structure and can be launched in a short time.
The rocket could be launched within a week after leaving port, said Jin.
The rocket can carry a payload of up to 350 kg to a sun-synchronous orbit at an altitude of 700 km and 700 kg to a low-Earth orbit at 200 km. It is mainly used to carry small satellites, and can take multiple satellites into orbit at the same time.

Offline SciNews

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Re: China's space program
« Reply #883 on: 01/31/2019 01:44 pm »
Reuters: China's military-run space station in Argentina is a 'black box'
https://www.reuters.com/article/us-space-argentina-china-insight/chinas-military-run-space-station-in-argentina-is-a-black-box-idUSKCN1PP0I2
For an interactive version of this story: https://tmsnrt.rs/2TlXEMj

Offline Lsquirrel

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Re: China's space program
« Reply #884 on: 02/03/2019 10:51 am »
Next Generation Manned Launch Vehicles,Next Generation Manned SpaceCraft,LEO、GEO and Beyond(Cis-Lunar)

China's long march to the moon:

Reusable and Lightweight Manned Lunar Lander
New Manned Launch Vehicle(LEO 70 ton, LTO 25 ton)
« Last Edit: 02/03/2019 11:37 am by Lsquirrel »

Offline Phillip Clark

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Re: China's space program
« Reply #885 on: 02/03/2019 12:26 pm »
It would be nice to have the Chinese captions translated please.
I've always been crazy but it's kept me from going insane - WJ.

Offline zhangmdev

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Re: China's space program
« Reply #886 on: 02/03/2019 12:55 pm »
Development Requirement
(1) Manned Spaceflight Follow-on Development Requirement

* Requirement to operate space station: LEO 10-20 t
* Requirement to follow-on missions: LTO 25 t or LEO 70 t
* Performance Level: high reliability for manned mission, state-of-art overall performance
* R&D Cost: controllable, economically bearable

image caption: next generation manned spacecraft

==================

So "Follow-on mission" is the euphemism for manned moon landing?

Offline Dalhousie

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Re: China's space program
« Reply #887 on: 02/03/2019 10:40 pm »
Reuters: China's military-run space station in Argentina is a 'black box'
https://www.reuters.com/article/us-space-argentina-china-insight/chinas-military-run-space-station-in-argentina-is-a-black-box-idUSKCN1PP0I2
For an interactive version of this story: https://tmsnrt.rs/2TlXEMj

Couple of obvious errors there, even to my inexpert eye.
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Steven Pietrobon

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Re: China's space program
« Reply #888 on: 02/04/2019 05:47 am »
That Lunar lander does not look big enough for single stage from a Gateway, to the surface and back again. Propellant volume is only 2 kL, which gives a propellant mass of 2.1 t. I presume that staged descent is being used.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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