China's Space Program News Thread

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Re: Chinese Satellites

Another of the YaoGan Weixing lobbed into orbit.

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September 21st, 2010 by Rui C. Barbosa
China has carried out the ninth orbital launch of the year, by launching their Long March 2D carrying the Weixing-11 remote sensing satellite. The launch took place at 02:42UTC on Wednesday, lifting off from the Jiuquan Satellite Launch Center. Meanwhile, China has spoken about its near-term space flight goals.

Chinese Launch:

Once again the Chinese media refer the new satellite as intended for “scientific experiments, land survey, crop yield assessment, and disaster monitoring.” As was the case with previous launches of the YaoGan Weixing series, Western analysts believe this class of satellites is being used for reconnaissance and military purposes.

The satellite was developed by the Aerospace Shanghai Technical Institute at the China Aerospace Science and Technology Corp.

The previous satellite in the series, YaoGan Weixing-10, was launched August 9th from the Taiyuan Satellite Launch Center via a CZ-4C Chang Zheng-4C (Long March 4C).

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The ‘YaoGan Weixing’ designation appears to be used in a similar fashion to that of the old Soviet ‘Cosmos’ designation, hiding the true mission of the vehicles launched into orbit.

The first YaoGan Weixing satellite (29092 2006-015A) was launched by a CZ-4C Chang Zheng-4C (CZ4C-1) from the Taiyuan Satellite Launch Center on April 27, 2006. At the time the details about this satellite were closely guarded, but later it was noted that it was the first Jian Bing-5 satellite, equipped with the first space-based synthetic aperture radar (SAR).

The YaoGan Weixing-2 (31490 2007-019A) was launched on 25 May, 2007, by a CZ-2D Chang Zheng-2D (CZ2D-8) from the Jiuquan Satellite Launch Center. Details were also restricted, though it is claimed that this spacecraft is an electro-optical military observation satellite, complementing the results of the YaoGan Weixing-1.

Another SAR mission was launched on November 12, 2007 with the YaoGan Weixing-3 (32289 2007-055A) satellite orbited by a CZ-4C Chang Zheng-4C (CZ4C-2) launch vehicle from Taiyuan. Other SAR missions are listed as the YaoGan Weixing-6 (34839 2009-021A), launched by a CZ-2C Chang Zheng-2C-III from Taiyuan on April 22, 2009, and the YaoGan Weixing-8 (36121 2009-072A), launched on December 15, 2009, by a CZ-4C Chang Zheng-4C also from Taiyuan.

On December 1, 2008, YaoGan Weixing-4 (33446 2008-061A) – the second electro-optical satellite on the series – was launched by a CZ-2D Chang Zheng-2D from Jiuquan, and on December 15, 2008, YaoGan Weixing-5 (33456 2008-064A) was launched by a CZ-4B Chang Zheng-4B (CZ4B-12) from the Taiyuan Satellite Launch Center. It is now believed that this satellite was the fourth electro-optical bird on the series, as well as the YaoGan Wexing-7 (36110 2009-069A) launch on December 9, 2009 from Jiuquan by a CZ-2D Chang Zheng-2D.

The YaoGan Weixing-9 mission, launched March 5 this year from the Jiuquan Satellite Launch Center, had an architecture that was different from the previous missions on the series. Launched by a CZ-4C Chang Zheng-4C launch vehicle from Jiuquan, the mission put not one but a triplet of satellites in Earth orbit. Flying in formation, these three satellites form what looks like a type of NOSS system.

YaoGan Weixing-11 was launched by a CZ-2D Chang Zheng-2D launch vehicle. This is a two stage launch vehicle developed by the Shanghai Academy of Spaceflight Technology. With storable propellants, is mainly used to launch a variety of low earth orbit satellites.

The CZ-2D can launch a 3,500kg cargo in a 200 km circular orbit. Its first stage is the same of the CZ-4 Chang Zheng-4. The second stage is based on CZ-4 second stage with an improved equipment bay. The first launch of the CZ-2D was on August 9th, 1992 from the Jiuquan Satellite Launch Center orbiting the Fanhui Shei Weixing FSW-2-1 (22072 1992-051A) recoverable satellite.

This launch was the 131st Chinese orbital launch, the 46th orbital launch from the Jiuquan Satellite Launch Center, and the fourth orbital launch from Jiuquan this year. This was the thirteenth use of a CZ-2D Chang Zheng-2D launch vehicle.

Also known as the Shuang Cheng Tze launch center, the Jiuquan Satellite Launch Center, in Ejin-Banner – a county in Alashan League of the Inner Mongolia Autonomous Region – was the first Chinese satellite launch center.

The site includes a Technical Centre, two Launch Complexes, Mission Command and Control Centre, Launch Control Centre, propellant fuelling systems, tracking and communication systems, gas supply systems, weather forecast systems, and logistic support systems. Jiuquan was originally used to launch scientific and recoverable satellites into medium or low earth orbits at high inclinations.

It is also the place from where all the Chinese manned missions are launched. Presently, only the LA4 launch complex (with two launch pads – SLS-1 and SLS-2) is in use.

The first orbital launch took place on April 24, 1970 when the CZ-1 Chang Zheng-1 (CZ1-1) rocket launched the first Chinese satellite, the Dong Fang Hong-1 (04382 1970-034A).

Chang’e-2:

It is now known that China plans to launch its ...
 

bd popeye

The Last Jedi
VIP Professional
Re: Chinese Satellites

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A Long March 3C rocket carrying the Chang'e-2 lunar probe, which will go into orbit within 15 kilometres (nine miles) of the moon, blasts off from the launch centre in Xichang in the southwestern province of Sichuan on October 1, 2010. China celebrated 61 years of communist rule with the launch of its second lunar probe -- the next step in its ambitious programme to become the second country to put a man on the moon.
 

Krabat1976

New Member
Re: Chinese Satellites

Chang-He 2 is heading to the Moon more quickly than Chang-He 1 thank to a more powerful vehicle put in orbit. This has been possible by using a LongMarch3C carrier instead of a LongMarch2B. This is a sign that the chinese lunar program is proceeding better than expected. Maybe a lunar landing before 2020 is a not remote possiblity. Great news. :china: See also
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Centrist

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Re: Chinese Satellites

Aviation Week is reporting that Chang'e 2 is supposed to land a camera on the lunar surface...are there any Chinese sources that back up that claim?

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I was under the impression that Chang'e 2 was just an orbiter.
 

tphuang

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Re: Chinese Satellites

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well, the 6th Beidou-2 satellite is about to be launched from XiChang.

This is clearly a really busy year for launches by China.


These are the launches so far this year
China launches in 2010

01 - January 16 (1612:04.391UTC) - CZ-3C (Y2) - XSLC - BeiDou-2 'Compass-G1'
02 - March 05 (0455:05.227UTC) - CZ-4C (Y6) - JSLC - YG-9 YaoGan Weixing-9
03 - June 02 (1553:04.524UTC) - CZ-3C (Y4) - XSLC - BeiDou-2 'Compass-G3'
04 - June 15 (0139:04.115UTC) - CZ-2D (Y15) - JSLC - SJ-12 Shi Jian-12
05 - July 31 (2130:04.278UTC) - CZ-3A (Y16) - XSLC - BeiDou-2 IGSO-1 'Compass-I1'
06 - August 09 (2249:05.551) - CZ-4C (CZ4C-6) - TSLC - YG-10 YaoGan Weixing-10
07 - August 24 (0710:04.075) - CZ-2D (Y14) - JSLC - TH-1 Tian Hui-1 'Mapping Satellite-1'
08 - September 4 (1614:04.227) - CZ-3B (Y13) - XSLC - Chinasat-6A (XinNuo-6)
09 - September 22 (0212:03.835) - CZ-2D (Y11) - JSLC - YaoGan Weixing-11; ZDPX Zhe Da Pixing-1B/C
10 - October 1 (1059:57.345) - CZ-3C (Y7) - XSLC - Chang'e-2
11 - October 6 (0049:05.433) - CZ-4B - TSLC - SJ-6 Shi Jian-6 Group-4

And the upcoming ones:

October 31 - CZ-3C - XSLC - BeiDou-2 'Compass-G4'
November 4 - CZ-4C - TSLC - FY-3B Feng Yun-3B
November (?) - CZ-3A - XSLC - ZX-20A ZhongXing-20A (ST-1B Shen Tong-1B)
December - CZ-3A - XSLC - BeiDou-2 IGSO-2 'Compass-I2'

So, two more Beidou satellites before the end of the year.
 

tphuang

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Re: Chinese Satellites

as scheduled, the 6th beidou-2 satellite just got launched.
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a summary of the launched beidou-2 satellites thus far

4/14/2007 LM-3A Compass-M1 MEO ~21,500 km
4/15/2009 LM-3C Compass-G2
1/17/2010 LM-3C Compass-G1 GEO 144.5°E [10]
6/2/2010 LM-3C Compass-G3[31] GEO 84.7°E
8/1/2010 LM-3A Compass-IGSO1 HEO ~36,000 km [32]
11/1/2010 LM-3C Compass-G4
 

Totoro

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Re: Chinese Satellites

Is the first one, launched in 2007, some sort of test/filler vehicle for b2 signal and not a full fledged beidous2 satellite?

Also, what will the constellation for local coverage be like, how many satellites in what sort of orbits? What area will that network be covering and are there spare satellites planned for that local constellation? When will the local network be up and running?
 

Schumacher

Senior Member
Re: Chinese Satellites

Congratulations to China for a successful end to a record setting years as the Beidou system is steadily being built.
Next year's highlights will be the Tiangong modules to make up China's first space lab.

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"China launches another navigation satellite – End 2010 with record 15 launches
December 17th, 2010 by Rui C. Barbosa

Ending a record breaking year, China launched its seventh satellite as part of their large navigation system via their Long March 3A – otherwise known as the CZ-3A Chang Zheng-3A (Y18) – launch vehicle. The launch of BeiDou-2 ‘Compass-I2′ took place from the Xi Chang Satellite Launch Center, in Sichuan Province at 20:20UTC on Friday.

Chinese Launch:

The satellite that was launched is the second BeiDou-2 IGSO (Inclined GSO) satellite of the system. This constellation of satellites will consist of 35 vehicles, including 27 MEO satellites, 5 GSO satellites and 3 IGSO. The satellites will transmit signals on the: 1195.14-1219.14MHz, 1256.52-1280.52MHz, 1559.05-1563.15MHz and 1587.69-1591.79MHz, carrier frequencies......................................................."
 

kroko

Senior Member
Re: china manned space - news and views

News again of china´s intention of developing a saturn V-class rocket to the moon and deep space. It presents no timetable, just studying the feasibility of it.

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pugachev_diver

Banned Idiot
Re: china manned space - news and views

This is like comparing apple to oranges. The Saturn monster was built in the cold war, when cost was not a problem. The only purpose was to out match each other. The space race during the cold war was indeed breathtaking, but on a large picture, was somewhat pointless. It's a different story today. China doesn't desperately need rockets that monstrous, maybe other than possible moon explorations. It is indeed important, but it is not in a hurry and scientific research projects like these usually don't result in profiting rewards for at least 20 years. China's 两弹一星 project (literally translates to nuclear and missile program) is a good reflection of this idea, where China was in a life or death situation during the early cold war period. It's burdened with threats from the two biggest superpowers in the world. So it literally made the missiles and nuclear weapons over night.
But at this moment, there's no such hurry for the large rockets, as current rockets are good enough for regular satellite launches.
 
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