Author Topic: China's space program  (Read 654717 times)

Offline plutogno

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Re: China's space program
« Reply #440 on: 10/18/2014 10:23 am »
on Chinese microgravity research (on Shenzhou 8 in particular): Effects of spaceflight and simulated microgravity on cell sub-microstructure and antioxidant enzyme activity in tomato
http://tech.scichina.com:8082/sciEe/EN/abstract/abstract515744.shtml

Offline Lsquirrel

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Re: China's space program
« Reply #441 on: 10/21/2014 02:05 pm »

Offline Steven Pietrobon

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Re: China's space program
« Reply #442 on: 10/22/2014 10:09 am »
That 13 t into GTO is pretty impressive. That's 30% more than Ariane 5. That might be enough to send Shenzhou at 7.84 t around the Moon. They also mention an LM-Heavy!

"A more powerful launch vehicle LM-heavy is under studying now, together with the new generation launch vehicle, they will remarkably improve the into space capability of China."
« Last Edit: 10/22/2014 10:15 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Phillip Clark

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Re: China's space program
« Reply #443 on: 10/22/2014 12:37 pm »
My 2004 JBIS analysis of the CZ-5 programme showed that what we now call the CZ-7 with four strap-on boosters could also launch a full Shenzhou around the Moon like Zond/L-1, but with the forward orbital module retained.
I've always been crazy but it's kept me from going insane - WJ.

Offline Lsquirrel

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Re: China's space program
« Reply #444 on: 10/24/2014 03:53 am »
That 13 t into GTO is pretty impressive. That's 30% more than Ariane 5. That might be enough to send Shenzhou at 7.84 t around the Moon. They also mention an LM-Heavy!

"A more powerful launch vehicle LM-heavy is under studying now, together with the new generation launch vehicle, they will remarkably improve the into space capability of China."
LM-5's LTO capability is 8.2 tonnes,  it can send a Shenzhou into LTO around the Moon.
it's original capability is 14 tonnes into GTO, so 13 tonnes GTO is surprisingly. Even if LM5 configuration is LM5B + CZ-3A 3rd stage, it's LTO might be 14 tonnes, it bothers me

Offline Lars-J

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Re: China's space program
« Reply #445 on: 10/25/2014 12:27 am »

Offline Robotbeat

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Re: China's space program
« Reply #446 on: 10/25/2014 03:56 am »
Hydrolox for core and upper stages, kerolox for boosters. Very good choices if you have access to both technologies.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

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Offline Dalhousie

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Re: China's space program
« Reply #447 on: 10/26/2014 07:55 pm »
Hydrolox for core and upper stages, kerolox for boosters. Very good choices if you have access to both technologies.

Which of course China has.
Apologies in advance for any lack of civility - it's unintended

Offline vulture4

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Re: China's space program
« Reply #448 on: 10/27/2014 12:47 pm »
Is this the first time an umbilical tower has been mounted on the mobile launch platform? That adds considerable weight to the platform; I wonder why the change was made. Possibly the desire to avoid mating umbilicals on the pad? Is the platform moved on rails or road tires?

Offline baldusi

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Re: China's space program
« Reply #449 on: 10/27/2014 01:13 pm »
http://www.iafastro.net/download/congress/IAC-14/DVD/full/IAC-14/D2/1/manuscripts/IAC-14,D2,1,11,x20929.pdf
the new generation launch vehicles in China

Long March 5 images from the PDF:
From the launch tracks image, the LEO appears to be around 38/9 degrees launch azimuth. The Tiangong was launched at a 42.7 inclination orbit, which would be 38.79deg launch azimuth. An ISS orbit (51.6) launch azimuth would be roughly 48.7deg. Such Azimuth would go right through the middle of the Philippine island of Palawan. Thus, we can assume that they are planing the space station on the same orbit of Tiangong. Which is logical since it would allow them to reach it from at least two of their launch sites. But would preclude any sort of use as safe haven for either station.

Offline Nighthawk

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Re: China's space program
« Reply #450 on: 10/27/2014 03:58 pm »
Is this the first time an umbilical tower has been mounted on the mobile launch platform? That adds considerable weight to the platform; I wonder why the change was made. Possibly the desire to avoid mating umbilicals on the pad? Is the platform moved on rails or road tires?
It's based on rail.

Offline russianhalo117

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Re: China's space program
« Reply #451 on: 10/27/2014 11:23 pm »
Is this the first time an umbilical tower has been mounted on the mobile launch platform? That adds considerable weight to the platform; I wonder why the change was made. Possibly the desire to avoid mating umbilicals on the pad? Is the platform moved on rails or road tires?
Looking at the HSLC (WSLC) construction photos its transferred via rail. There is road down the center like Arianespace's ELA-2 and ELA-3
« Last Edit: 10/27/2014 11:28 pm by russianhalo117 »

Offline russianhalo117

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Re: China's space program
« Reply #452 on: 10/27/2014 11:31 pm »
http://www.iafastro.net/download/congress/IAC-14/DVD/full/IAC-14/D2/1/manuscripts/IAC-14,D2,1,11,x20929.pdf
the new generation launch vehicles in China

Long March 5 images from the PDF:
From the launch tracks image, the LEO appears to be around 38/9 degrees launch azimuth. The Tiangong was launched at a 42.7 inclination orbit, which would be 38.79deg launch azimuth. An ISS orbit (51.6) launch azimuth would be roughly 48.7deg. Such Azimuth would go right through the middle of the Philippine island of Palawan. Thus, we can assume that they are planing the space station on the same orbit of Tiangong. Which is logical since it would allow them to reach it from at least two of their launch sites. But would preclude any sort of use as safe haven for either station.
Well yes, unless China continues to employ its military and expansion muscles like the the Americans and Japanese did previously.

Offline luhai167

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Re: China's space program
« Reply #453 on: 10/29/2014 02:24 am »
Hydrolox for core and upper stages, kerolox for boosters. Very good choices if you have access to both technologies.

Which of course China has.

Well, kerolox is still under development which LM5/LM7 will be the first rocket for it. Hydrolox through was in use exactly 30 years ago on LM3.
« Last Edit: 10/29/2014 02:28 am by luhai167 »

Offline plutogno

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Re: China's space program
« Reply #454 on: 11/01/2014 08:29 am »

Offline Phillip Clark

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Re: China's space program
« Reply #455 on: 11/01/2014 08:55 am »
China pulls plug on solar observatory
http://news.sciencemag.org/asiapacific/2014/10/china-pulls-plug-solar-observatory?rss=1

It just shows that you cannot trust international "collaborators".
I've always been crazy but it's kept me from going insane - WJ.

Online Satori

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Offline Nordren

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Re: China's space program
« Reply #457 on: 11/07/2014 10:08 am »
Xinhua: Mars probe to debut at upcoming air show (And Tianzhou, CZ-7, + obs sat)

"China Aerospace Science and Technology Corp. announced Thursday that it would put a selection of the latest space achievements, including the Mars probe, on display at an upcoming air show.

The biennial air show is to be held in the southern port city of Zhuhai, Guangdong province from Nov. 11 to Nov. 16.

Exhibits will include a cargo spacecraft, the "Long March 7" carrier rocket and a high-definition Earth observation satellite.

The airshow will feature new aircraft, trade talks and technological exchanges. It is the only international aerospace trade show endorsed by the central government."

http://news.xinhuanet.com/english/china/2014-11/06/c_133770979.htm


Offline Blackstar

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Re: China's space program
« Reply #458 on: 11/09/2014 01:54 am »

Offline Steven Pietrobon

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Re: China's space program
« Reply #459 on: 11/09/2014 07:54 am »
Thanks Blackstar. The information for the latter missions appears to have been blocked out. Compared to previous announcements, there are no new missions there. The only discrepancy is the Mars Sample Return mission in 2023. Previous planning had a Mars Lander and Rover mission before that. Here is the old information and the information from that slide.

Stage 1
1) Mars Global Remote Sensing Orbiter and Small Rover
2) Near-Earth Asteroid Multi-Target Detection
3) Sun Fixed-Point Observation.

Stage 2 (Further Promotion)
1) Venus Exploration Orbiter
2) Mars Lander and Rover
3) Solar Polar Orbit Observer
4) Main-Belt Asteroid (Ceres) Sample Return.

Stage 3 (Sustainable Development)
1) Jupiter Orbiter
2) Mars Sample Return
3) Solar Storms Panoramic Observer.

2017 Chang'e 4 (Lunar Rover)
2018 Chang'e 5 (Lunar Sample Return)
2020 Chang'e 6 (Lunar Sample Return)
2020 Mars Global Remote Sensing Orbiter and Small Rover (Stage 1)
2022 Near-Earth Asteroid Multi-Target Detection (Stage 1)
2023 Mars Sample Return (Stage 3)
2024 Sun Fixed-Point Observation (Stage 1)
2024 Venus Exploration Orbiter (Stage 2)
2025 Main-Belt Asteroid (Ceres) Sample Return (Stage 2)
2027 Solar Polar Orbit Observer (Stage 2)
2028 Jupiter Orbiter (Stage 3)
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

 

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