Author Topic: China's space program  (Read 302118 times)

Online Phillip Clark

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Re: China's space program
« Reply #720 on: 01/21/2017 11:23 AM »
Would  I be correct to presume that the Tiangong-3 flight has been cancelled, and the Chinese are going straight for the modular space station after Tiangong-2?

Yes.

Offline Satori

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Re: China's space program
« Reply #721 on: 01/30/2017 09:00 PM »

Offline Steven Pietrobon

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Re: China's space program
« Reply #722 on: 01/31/2017 04:28 AM »
From the article

"A second Mars probe will bring back samples and conduct research on the planet's structure, composition and environment, Wu said.

Also on the agenda are an asteroid exploration, and a fly-by of the Jupiter system."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online gongora

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Re: China's space program
« Reply #723 on: 01/31/2017 04:11 PM »
Tweet from Peter B. de Selding:
Quote
China to UN: Like our Long March 5 (Nov inaugural carried >14,000kg to GTO)? Long March 934 coming in 2021: 66,000kg to GTO, 140,000kg LEO.

Online Phillip Clark

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Re: China's space program
« Reply #724 on: 01/31/2017 04:35 PM »
Tweet from Peter B. de Selding:
Quote
China to UN: Like our Long March 5 (Nov inaugural carried >14,000kg to GTO)? Long March 934 coming in 2021: 66,000kg to GTO, 140,000kg LEO.

2021 is very early for a CZ-9 variant.

Offline Nordren

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Re: China's space program
« Reply #725 on: 01/31/2017 05:07 PM »
Tweet from Peter B. de Selding:
Quote
China to UN: Like our Long March 5 (Nov inaugural carried >14,000kg to GTO)? Long March 934 coming in 2021: 66,000kg to GTO, 140,000kg LEO.

2021 is very early for a CZ-9 variant.

Yes, I assume the earlier stated 2030-ish timeframe still stands. This likely refers to mentions in the recent white paper release and press conference that the project will officially start within the current/13th five-year plan period. The vagueness of Chinese (and the translations) at play here, no doubt.

Offline Steven Pietrobon

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Re: China's space program
« Reply #726 on: 02/01/2017 06:59 AM »
Tweet from Peter B. de Selding:
Quote
China to UN: Like our Long March 5 (Nov inaugural carried >14,000kg to GTO)? Long March 934 coming in 2021: 66,000kg to GTO, 140,000kg LEO.

Well, I guess you need to interpret what "activated in next five years" to mean. With China saying a Lunar landing by 2030, my interpretation is that the CZ-9 project will be starting in 2021, although engine development will be occurring before then. I would be very surprised to see a CZ-9 lifting off the pad in 2021.

Of interest, is the picture of CZ-8! Has this been shown before?
« Last Edit: 02/01/2017 07:05 AM by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline baldusi

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Re: China's space program
« Reply #727 on: 02/01/2017 01:25 PM »
AIUI, the CZ-8 is a CZ-7 with solida and an hydrolox upper stage. That would replace the CZ-3 series.

Offline Galactic Penguin SST

Re: China's space program
« Reply #728 on: 02/01/2017 01:58 PM »
AIUI, the CZ-8 is a CZ-7 with solida and an hydrolox upper stage. That would replace the CZ-3 series.

Sorta - it uses the existing CZ-7 1st stage with the existing CZ-3 series hydrolox upper stage on top as 2nd stage and 2 120 t class SRBs. It will lift about 4.5 tonnes to polar orbits (roughly Antares-Soyuz class) and will be the CZ-4 series replacement (which it will divide - perhaps evenly - with the CZ-6A).

I wanted to write about the related paper some time ago but never quite found the time to do so - maybe I should do it now......
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline baldusi

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Re: China's space program
« Reply #729 on: 02/01/2017 04:22 PM »
AIUI, the CZ-8 is a CZ-7 with solida and an hydrolox upper stage. That would replace the CZ-3 series.

Sorta - it uses the existing CZ-7 1st stage with the existing CZ-3 series hydrolox upper stage on top as 2nd stage and 2 120 t class SRBs. It will lift about 4.5 tonnes to polar orbits (roughly Antares-Soyuz class) and will be the CZ-4 series replacement (which it will divide - perhaps evenly - with the CZ-6A).

I wanted to write about the related paper some time ago but never quite found the time to do so - maybe I should do it now......
Please do!! I don't know any Chinese and it's extremely difficult to look for papers through google translate. Not to mention its lackluster performance translating Chinese PDF.

Online ZachS09

Re: China's space program
« Reply #730 on: 02/01/2017 04:53 PM »
Actually, according to http://www.b14643.de/Spacerockets_1/China/CZ-8/Description/Frame.htm, the Long March 8 will use two liquid-fuel boosters; both of them have one YF-100 engine each. They will utilize kerosene and LOX.

 The core will use the first stage of Long March 7 and a modified version of the Long March 6 second stage with one YF-115 engine, which indicates that the second stage uses kerosene and LOX.

Look at the "Versions" tab carefully.
« Last Edit: 03/28/2017 01:53 AM by ZachS09 »
"Falcon 9 has landed. Landing operators, move into Procedure 11.100 on Recovery Net."

Offline Steven Pietrobon

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Re: China's space program
« Reply #731 on: 02/02/2017 06:17 AM »
The core will use the first stage of Long March 7 and a modified version of the Long March 6 second stage with one YF-115 engine, which indicates that the second stage uses RP-1 and LOX.

The image I posted shows two engines on the upper stage.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online ZachS09

Re: China's space program
« Reply #732 on: 02/02/2017 12:46 PM »
Okay...this confuses me a bit. One of our sources' pictures is outdated.

Either they did away with LRBs + one second stage engine and went with SRBs and two second stage engines, or it's the other way around.
"Falcon 9 has landed. Landing operators, move into Procedure 11.100 on Recovery Net."

Online Blackstar

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Re: China's space program
« Reply #733 on: 02/06/2017 05:07 PM »
Two new presentations on China's space programs. The one on the National Space Science Center has a lot of science updates (not planetary).

Offline Satori

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Re: China's space program
« Reply #734 on: 03/29/2017 07:54 PM »

Offline Satori

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Offline Nordren

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Re: China's space program
« Reply #736 on: 04/25/2017 05:55 PM »
Construction began on Monday on China's first commercial space industry center in Wuhan, capital of Hubei province.

Main investor CASIC wants Wuhan National Space Industry Base to attract at least 100 enterprises involved in the space industry before 2020 and generate 30 billion yuan ($4.36 billion) in annual gross product by then.
« Last Edit: 04/25/2017 06:21 PM by Nordren »

Offline Star One

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Re: China's space program
« Reply #737 on: 05/17/2017 04:35 PM »
China Great Wall Industry Corp lands Indonesian commercial satellite order

Quote
JAKARTA, Indonesia — China Great Wall Industry Corp. has clinched a contract with an Indonesian joint venture to build a replacement for a satellite that is running out of fuel early due to an underperformed Long March launch.

Palapa Satelit Nusantara Sejahtera, a joint venture of Indosat Ooredoo and Pasifik Satelit Nusantara (PSN), signed the contract for Palapa-N1, a high-throughput Ku-band satellite with 10 Gbps of capacity here May 17 with Beijing-based CGWIC, a subsidiary of China Aerospace Science and Technology Corporation.

Quote
In a more expansive agreement than other deals, CGWIC is providing not only the satellite and a Long March 3B launch, but also the ground control system, insurance and financing support for Palapa-N1.

http://spacenews.com/china-great-wall-industry-corp-lands-indonesian-commercial-satellite-order/
« Last Edit: 05/17/2017 04:37 PM by Star One »

Offline Dalhousie

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Re: China's space program
« Reply #738 on: 06/06/2017 11:44 PM »
New Chinese astronaut selection and space station missions revealed

http://gbtimes.com/china/new-chinese-astronaut-selection-and-space-station-missions-revealed
"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 Satori

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Re: China's space program
« Reply #739 on: 06/08/2017 03:25 AM »

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