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View Full Version : Chang'e 1 China moon mission countdown and launch



01101001
2007-Oct-08, 05:05 PM
China Daily: China: One step closer to the Moon (http://www.chinadaily.com.cn/china/2007-08/11/content_6022342.htm)

Zhang didn't specify the launch date.

Hmph, no countdown-and-launch thread for you, then!

... at least until they do announce a date.


According to the latest report, Chang'e 1 will be launched on October 26.

A date! October 26.

So, this then is the Chang'e 1 countdown and launch thread.

Some links:

Wikipedia: Chang'e program (http://en.wikipedia.org/wiki/Chang'e_program)
Planetary Society: Space Topics :: Chang'e 1 (http://www.planetary.org/explore/topics/space_missions/chang_e_1/)
China's Lunar Exploration Program: CLEP official site (http://210.82.31.82/) (too much Flash, not enough meat)
China National Space Administration (http://www.cnsa.gov.cn/n615709/cindex.html)
BAUT Forum topic: China plans Moon exploration - more news (http://www.bautforum.com/space-exploration/3860-china-plans-moon-exploration-more-news.html)
BAUT Forum topic: China to the Moon (http://www.bautforum.com/space-exploration/7748-china-moon.html)
BAUT Forum topic: China plans to survey 'every inch' of moon (http://www.bautforum.com/space-exploration/63251-china-plans-survey-every-inch-moon.html)
NASA Solar System Exploration :: Mission to the Moon :: Chang'e 1 profile (http://solarsystem.nasa.gov/missions/profile.cfm?MCode=CHANGE1)
NASA: Planetary and Lunar Missions Under Consideration :: Chang'e 1 (http://nssdc.gsfc.nasa.gov/planetary/prop_missions.html#change1)

http://nssdc.gsfc.nasa.gov/planetary/thumbnail/chang_e_1.gif (http://nssdc.gsfc.nasa.gov/planetary/prop_missions.html#change1)


Chang'e 1 is planned to be the first of a series of Chinese missions to the Moon. The spacecraft will launch in late 2007 on a CZ-3A booster and orbit the Moon for a year to test the technology for future missions and to study the lunar environment and surface regolith. The orbiter is based on the DFH-3 Comsat bus and will have a mass of roughly 2000 kg, 150 kg of which will be the scientific payload. The payload will include a stereo camera system to map the lunar surface, an altimeter to measure the distance between the spacecraft and the surface, a gamma/X-ray spectrometer to study the overall composition and radioactive components of the Moon, a microwave radiometer to map the thickness of the lunar regolith, and a system of space environment monitors to collect data on the solar wind and near-lunar region. The Chang'e program is named for a Chinese legend about a young fairy who flies to the Moon.

Approximately 18 days to launch.

KaiYeves
2007-Oct-08, 09:19 PM
I thought Chang'e's wife was the one who went to the moon, because he was chasing her for stealing his potion of immortality.

01101001
2007-Oct-08, 10:47 PM
I thought Chang'e's wife was the one who went to the moon, because he was chasing her for stealing his potion of immortality.

Wikipedia: Chang'e (mythology) (http://en.wikipedia.org/wiki/Chang'e_(mythology)) lists moon goddess Chang'e's husband as Houyi. Four versions of the tale of Chang'e are presented.

I think I had heard this other tale, but didn't make the connection:


The moon goddess was mentioned in the conversation between Houston Capcom and Apollo 11 crew just before the first moon landing:

Houston: Among the large headlines concerning Apollo this morning there's one asking that you watch for a lovely girl with a big rabbit. An ancient legend says a beautiful Chinese girl called Chang-o has been living there for 4000 years. It seems she was banished to the moon because she stole the pill for immortality from her husband. You might also look for her companion, a large Chinese rabbit, who is easy to spot since he is only standing on his hind feet in the shade of a cinnamon tree. The name of the rabbit is not recorded.

Collins: Okay, we'll keep a close eye for the bunny girl.

The bunny girl.

KaiYeves
2007-Oct-09, 12:27 AM
The bunny girl.
And her close anime relative, the cat girl.

yaohua2000
2007-Oct-09, 07:51 AM
Probe model:

http://www.sinaimg.cn/jc/2007-09-24/U2142P27T1D465470F3DT20070924153358.jpg

Launch window
2007-Oct-09, 01:34 PM
Yaohua that looks like a lander, is that this Chang'e mission or the next one after ?




PS
Could you be more careful with the hotlinking, it's a killer for those of us on slow laptops.

01101001
2007-Oct-09, 03:17 PM
Yaohua that looks like a lander, is that this Chang'e mission or the next one after ?

Or, the one after the one after?

JAXA Lunar Explorers around the World (http://www.jaxa.jp/article/special/lunar/exploration_e.html) shows concepts for Chang'e 1 orbiter, Chang'e 2 lander, and Chang'e 3 returner. The above looks like Chang'e 3, with an ascent stage.

01101001
2007-Oct-12, 04:10 PM
About 2 weeks to launch. Haven't seen scheduled launch time, yet.

October 26 (China Standard Time? UTC?)

KaiYeves
2007-Oct-13, 01:09 AM
Mythologist. It's a hard job, but somebody's got to do it.

Launch window
2007-Oct-13, 09:45 AM
China offers public chance to view first moon launch
http://afp.google.com/article/ALeqM5ger2rm3KohVfjVh0su1yXud3COIA

BEIJING (AFP) — China is offering 2,000 tickets to view the launch of the country's first lunar mission, the Chang'e 1 probe satellite, a company said Friday.

Only Chinese nationals are allowed to buy the tickets, priced at 800 yuan (107 dollars) each, Yang Pei, a spokeswoman for the ticket agency, Chengdu Chang'e Benyue Co. Ltd., told AFP.

Viewers can choose from three viewing points, with two located 2.5 kilometres (1.6 miles) away from the launch site and one four kilometres away, according to Friday's Shanghai Morning Post.

The Chang'e 1 lunar probe is undergoing final tests ahead of its scheduled launch before the end of 2007. It is now at the launch site outside the southwestern city of Xichang.

The probe will be followed by robotic missions and, eventually, a lunar base to allow astronauts to live longer on the moon and utilise its resources.

China successfully launched astronaut Yang Liwei into orbit in 2003, becoming the third country after the former Soviet Union and the United States to put a man in space.

yaohua2000
2007-Oct-13, 10:03 AM
China offers public chance to view first moon launch
http://afp.google.com/article/ALeqM5ger2rm3KohVfjVh0su1yXud3COIA

I telephoned them yesterday afternoon and booked a seat. But I have not paid for it. Does it worth the money? (CNY¥800.00 + 2561*2 km round-trip train from beijing to the launch site + maybe hotel)

Launch window
2007-Oct-13, 05:52 PM
sounds like a long trip, will this be the first launch you've seen ?

01101001
2007-Oct-16, 05:48 AM
New launch window

The Planetary Society Weblog: Chang'e 1 launching October 22-25 (http://planetary.org/blog/article/00001195/)


Wang Chun just sent me another email pointing me to a Chinese news story that announces that Chang'e 1 is launching in a week! The launch date is given as a range, October 22-25.

Shanghai Daily: China to launch first lunar satellite next week (http://www.shanghaidaily.com/sp/article/2007/200710/20071016/article_334650.htm)


CHINA'S first lunar satellite is scheduled to blast off next week from the Xichang Satellite Launch Center in southwest China's Sichuan Province, the Shanghai Morning Post reported today.

"October 22 to 25 is the best period for the launch according to an analysis of weather, but the detailed time can't be revealed now," an official with the center said.

The satellite, named "Chang'e" after the legendary Chinese goddess who flew to the moon, will orbit the Earth five to seven times before heading to the moon within 12 days.

7 to 10 days to launch

yaohua2000
2007-Oct-16, 06:54 AM
The launch is scheduled at 2007-10-24 10:05 UTC according to the latest report.


New launch window

The Planetary Society Weblog: Chang'e 1 launching October 22-25 (http://planetary.org/blog/article/00001195/)



Shanghai Daily: China to launch first lunar satellite next week (http://www.shanghaidaily.com/sp/article/2007/200710/20071016/article_334650.htm)



7 to 10 days to launch

KaiYeves
2007-Oct-16, 09:32 PM
"Up, up, up!
Higher, higher
Up, up, up
We're on fire!"

01101001
2007-Oct-17, 06:05 AM
The launch is scheduled at 2007-10-24 10:05 UTC according to the latest report.

Xie xie. Hope you can make it in person. Take pictures for us!

Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

1 week and 4 hours to launch.

yaohua2000
2007-Oct-17, 08:56 AM
Xie xie. Hope you can make it in person. Take pictures for us!

Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

1 week and 4 hours to launch.

Got the ticket this afternoon: Front side (http://www.yaohua2000.org/20071017/front.jpg) | Back side (http://www.yaohua2000.org/20071017/back.jpg)

01101001
2007-Oct-21, 04:59 PM
Some photos of the Xichang Satellite Launch Center located in southwest China's Sichuan Province:

china.org.cn: Moon orbiter, Chang'e I, sets to take off (http://www.china.org.cn/english/China/228927.htm)

(Google Map (http://maps.google.com/maps?t=k&ie=UTF8&ll=28.246744,102.026736&spn=0.008298,0.016007&z=16&om=1) for context)

And, in other slow news...

chinanews.cn: Chinese music to be played in space (http://www.chinanews.cn/technology/2007-10-18/40392.html)


Chinanews, Shanghai, Oct 18 – China's first moon probe satellite Chang'e No. 1 will be sent to space soon. Along with the satellite, 30 classical Chinese songs and music pieces will also be sent to space. These songs include My Lovely Hometown (Shui Bu Shuo An Jia Xiang Hao), Moonlight over Erquan Springs, Ode to the Yellow River, The Butterfly Lovers, etc, the Shanghai Evening Post reported.
[...]
In addition to these 30, the song March of the Volunteers and The East is Red (Dong Fang Hong) were also selected. The former song is China's national anthem and the latter was once played on China's first manmade satellite DFH-1. The two songs have been selected because of their special historical significance.

Targeted launch:
Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

Count Zero
2007-Oct-22, 11:00 AM
Great stuff! It pleases me that both the Chinese and Japanese are treating their moon probes as more than just engineering feats, but also as cultural achievements. Both nations can take justifiable pride in their accomplishments.

01101001
2007-Oct-23, 06:05 AM
AP: China to Launch Lunar Probe This Week (http://ap.google.com/article/ALeqM5ioQKa8v8fdB7WHill68AX-VR2ufg)


The launch window for China's Chang'e 1 orbiter has been set for Wednesday through Friday, with the prime time being 6 p.m. (6 a.m. EDT) Wednesday, said Li Guoping, a spokesman for the China National Space Administration.

"The orbiting of the moon is a high-tech project of self-innovation," Li told reporters. "It will set the technological foundation for the development of China's space exploration."

The Chang'e 1 — named after a legendary Chinese goddess who flew to the moon — would be launched from the Xichang Satellite Launch Center in Sichuan province in southwestern China, Li said.

Pre-launch inspections have been completed and "they fully fulfill the technical requirements," he said, reading from a statement. He did not take questions.

Targeted launch:
Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

28 hours to launch

01101001
2007-Oct-23, 06:05 PM
Orlando Sentinel: NASA points to foreign competition to spark support (http://www.orlandosentinel.com/news/space/orl-shuttle2307oct23,0,6120181.story)


With Discovery on the launchpad ready for liftoff today and only 13 flights left until the three shuttles are mothballed, NASA's top officials are clamoring about a new space race to help push the agency into the future.

Their effort, expressed in speeches and interviews during the past several months, is fueled by a fear that unless something sparks a public outcry for an invigorated space-exploration program, the United States could lose its global leadership role in the quest for the stars.
[...]
Aides acknowledge that Griffin -- like the rest of the space community -- is hoping for some kind of a "Sputnik moment," an event capable of driving public demand for space exploration as the Soviet Union's launch of the first satellite did 50 years ago. And recently, he has been warning that America is already falling behind China's aggressive space program.
[...]
"I think most people will look at the Chinese [manned] landing on the moon and shrug, and wonder, 'What's the big deal? We did that 40 years ago,' " said Howard McCurdy, a space historian at American University.

And for those who think NASA is covering up news of an impending asteroid strike:


"Short of real international competition, an Arizona-sized asteroid strike would do it," says McCurdy, adding, "In the 1960s, NASA was racing to beat a date. Today, it needs to race to beat a dollar."

Enough about NASA. Back to "bunny girl" Chang'e...

CCTV: Chinese dream of flying to the moon to achieve by launch of Chang´e 1 (http://www.cctv.com/english/20071023/105297.shtml) -- with a video report


Flying to the moon has been a Chinese dream for thousands of years. With the launch of China's first lunar exploration project -- the Chang'e 1-- this ancient desire is coming closer to becoming a modern reality.

This is the Shanghai Astronomical Observatory. The staff are preparing to process data from China's first moon probe project-- the Chang'e 1. One of the key scientists directing this part of the process is Professor Ye Shuhua. She has been working at this observatory for nearly half a century. To Ye Shuhua, China's lunar project is exciting news for the country's space industry and a long awaited dream come true.

Targeted launch:
Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

16 hours to launch

yaohua2000
2007-Oct-24, 02:09 AM
Departed from Beijing west railway station at 2007-10-22 17:56 CST, and arrived in Xichang city about 2 hours ago at 2007-10-24 08:02 CST.

Light rain here... But they said Chang'e 1 will be launched at the time as announced before, so next will take bus from Xichang city to the satellite launch center about 2 hours later at noon.

01101001
2007-Oct-24, 04:05 AM
Light rain here... But they said Chang'e 1 will be launched at the time as announced before, so next will take bus from Xichang city to the satellite launch center about 2 hours later at noon.

I hope you get a great seat. Enjoy the launch.

I'm not expecting to see much coverage on the Web, maybe just a news item that it's happened. You might be our best source of information.

International Herald Tribune: Preparations nearly complete for China's first lunar probe launch (http://www.iht.com/articles/ap/2007/10/24/asia/AS-GEN-China-Lunar-Probe.php)


China was on schedule to launch its first lunar probe Wednesday evening, a space official and state media said.

The scheduled launch of the Chang'e 1 orbiter comes just weeks after China's regional rival Japan put one in orbit over the moon in a big leap forward for Asia's undeclared space race.
[...]
China's launch was expected to take place at 6 p.m. (1000 GMT) Wednesday, said Li Guoping, spokesman for the China National Space Administration.

The Long March 3A rocket was on the launch pad and weather forecasters had said conditions would be favorable during the three-day launch time "window" of Wednesday through Friday, the official Xinhua News Agency said, citing a spokesman at the Xichang Satellite Launch Center in southwestern China's Sichuan Province.

China Daily: Countdown to another leap upward (http://www.chinadaily.com.cn/china/2007-10/24/content_6201523.htm)


China's space ambitions are at least six centuries old.

It all began when Wan Hu, an official of the Ming Dynasty (1368-1644), became the earliest documented pioneer of rocket flight in both China and the world.

One day in the early 16th century, in an ambitious attempt to fly to outer space, he bundled himself into a chair attached to 47 rockets while holding a large kite in each hand.

The final result was fatal. Wan died in an explosion of rockets.

It would take another 600 years until manned spaceflight became a reality for China.

A crater on the moon has been named after Wan, and today's expected launch of China's first lunar probe will herald in a new era for the country's space ambitions to achieve a successful moon landing by 2012.

Targeted launch:
Wednesday, October 24, 1805 CST
Wednesday, October 24, 1005 UTC
Wednesday, October 24, 0605 EDT
Wednesday, October 24, 0305 PDT

6 hours to launch

01101001
2007-Oct-24, 04:24 AM
The Times Online UK: China prepares for lunar mission (http://www.timesonline.co.uk/tol/news/world/asia/article2726632.ece)


Farmers in Naji village have locked up their pigs and chickens lest the imminent launch of the first Chinese moon orbiter frightens the animals.

Villagers are also being moved away two hours before blast-off in case it misfires, but they will still have a ringside seat for China’s first step in its ambitious mission to reach the Moon.
[...]
Ouyang Ziyuan, the chief scientist for the Chinese lunar programme, said that exploiting the Moon was important for China. “In the current international situation, if China does not do this it will be difficult to escape the fate of being left behind and beaten yet again.”

01101001
2007-Oct-24, 06:03 AM
CCTV will broadcast video of the launch of Chang'e 1.

Perhaps it will be webcast, too.

CCTV International (http://www.cctv.com/english/index.shtml#)


On CCTV Live:
Oct. 24 at 06:00pm- Launch of China´s lunar orbiter "Chang´e-1"

There's a "Watch CCTV Live" button there. Eww. It wants to install an Active-X control. Uh... no thanks.

Maybe: CCTV Chang'e I Journey to the Moon (http://www.cctv.com/english/special/Change1/01/index.shtml) page, where currently English-language reports about Chang'e preparations are happening. I don't know if this is live or just archives of video reports about Chang'e 1. Looks like video archives.

Oh, yeah... 4 hours and 2 minutes to launch.

Launch window
2007-Oct-24, 09:27 AM
It got delayed due to weather but should launch very soon

Bolasanibk
2007-Oct-24, 11:26 AM
Launched (http://news.bbc.co.uk/2/hi/asia-pacific/7059356.stm)

The link also contains a link to the video of the launch.

Launch window
2007-Oct-24, 12:31 PM
Solar panel of Chang'e-1 probe unfolded as planned

http://news.xinhuanet.com/english/2007-10/24/content_6937825.htm

01101001
2007-Oct-24, 01:23 PM
ESA: Chang'e-1 - new mission to Moon lifts off (http://www.esa.int/esaCP/SEMPM53Z28F_index_0.html)


ESA is collaborating with the Chinese on this mission by providing spacecraft and ground operations support services to CNSA. The two agencies will also share data and encourage a visitors’ programme so that researchers can learn from each other.
[...]
"ESA's expertise in tracking Chang'e-1 sets the stage for future cooperation with China. The Agency's tracking stations network, ESTRACK, is a resource that benefits not only the Agency but also all space science through such international cooperation," said Erik Soerensen, Head of the System Requirements and Validation Section at ESA's European Space Operations Centre.

Wired: First Chinese Lunar Mission Lifts Off (http://blog.wired.com/wiredscience/2007/10/first-chinese-l.html)


Chalk this up as a crowded week in space. Not hours after the launch of the Discovery space shuttle comes the liftoff of China's first lunar mission, the Chang'e-1.

So far everything has gone smoothly, with a 6:05 pm local time launch and subsequent deployment of solar panels for power, according to Chinese officials. The lunar trip will take a few days, with a tranfer orbit change slated for Oct. 31, and arrival at its final moon orbit on Nov. 5, according to China's state news service, Xinhua.

AP: China Launches 1st Lunar Probe (http://ap.google.com/article/ALeqM5ioQKa8v8fdB7WHill68AX-VR2ufg)


China launched its first lunar probe Wednesday, an initial step in an ambitious 10-year plan to send a rover to the moon and return it to Earth.

The Chang'e 1 orbiter blasted off with a trail of smoke from the Xichang Satellite Launch Center in Sichuan province in southwestern China, according to images from state television.

The launch comes just weeks after China's regional rival Japan put a probe into orbit around the moon in a great leap forward in Asia's undeclared space race. India is likely to join the regional rivalry soon, with plans to send its own lunar probe into space in April.

yaohua2000
2007-Oct-24, 02:51 PM
The observe location was on a hill and about five kilometer away from the launch site. The weather was foggy and local farmers burn straw which make smoke. But the view was still great in a telescope. The launch was on time at 18:05. My seat might be one of the best among all visitors, located at 28.2017 N, 102.0655 E, and 1712 m above sea level.

I will go further south to visit Yunnan and Guangxi provinces in the coming six days. I cannot upload photos because I only have slow and expensive GPRS Internet connection before October 31.

Argos
2007-Oct-24, 06:00 PM
The Chinese on the Moon, for a change. :)

Go Chang'e!

KaiYeves
2007-Oct-24, 09:06 PM
The Chinese on the Moon, for a change.
Ditto.
To the Moon 2-
This time, it's INTERNATIONAL!

01101001
2007-Oct-25, 02:36 AM
I think the best video (and still images (http://www.cctv.com/english/20071024/106431.shtml), if you hunt) is at CCTV: Chang'e I Journey to the Moon (http://www.cctv.com/english/special/Change1/01/index.shtml).

Glad you saw something good, yaohua2000. We patiently await what pictures you may provide. And, congratulations to China and the Chinese!

Xinhuanet: Chang'e-1 lunar probe to conduct 1st orbit transfer on Oct. 25 (http://news.xinhuanet.com/english/2007-10/24/content_6939630.htm)


Zhou Jianliang, deputy chief engineer of the BACC, said the Chang'e-1 lunar probe, launched on Wednesday, will be transferred to an orbit with a perigee of about 600 kilometers on Thursday afternoon.

The satellite is circularizing earth in a 16-hour orbit at 205 kilometers perigee and 50,930 kilometers apogee, statistics from BACC shows.

The 2,300-kilogram orbiter will experience four accelerations, which will shorten its distance to the moon orbit. It is expected to enter earth-moon transfer orbit on October 31 and arrive in the moon's orbit on November 5.

yaohua2000
2007-Oct-25, 11:40 AM
Burned rocket impacts ground at 18:16, 11 minutes after launch, nobody hurt.

http://news.sina.com.cn/c/p/2007-10-25/173814163665.shtml
http://news.sina.com.cn/c/p/2007-10-25/173814163666.shtml
http://news.sina.com.cn/c/p/2007-10-25/173814163667.shtml
http://news.sina.com.cn/c/p/2007-10-25/173814163668.shtml
http://news.sina.com.cn/c/p/2007-10-25/173814163669.shtml
http://news.sina.com.cn/c/p/2007-10-25/173814163670.shtml

01101001
2007-Oct-25, 01:23 PM
Burned rocket impacts ground at 18:16, 11 minutes after launch, nobody hurt.

That is as planned, right? Not that specific field, but it would come down in the area. Too bad about the building (http://news.sina.com.cn/c/p/2007-10-25/173814163668.shtml). Looks like it could have been worse. The owner is probably a local celebrity now.

01101001
2007-Oct-25, 06:08 PM
Xinhuanet: Scientists activate 1st probing equipment on Chang'e-1 lunar orbiter (http://news.xinhuanet.com/english/2007-10/25/content_6944772.htm)


Chinese scientists have successfully activated the first probing equipment on the Chang'e-1 lunar orbiter on Thursday evening to start exploring the space environment between earth and moon.

The high-energy solar particle detector, which was positioned on board the satellite with seven other probing facilities, will collect data on the space expanse between 40,000 kilometers and 400,000 kilometers from earth to moon, said Li Chunlai, chief designer of the ground application system of the lunar probe.

01101001
2007-Oct-26, 03:26 PM
Xinhuanet: China's lunar probe begins 2nd orbital transfer (http://news.xinhuanet.com/english/2007-10/26/content_6953611.htm)


China's lunar probe Chang'e-1 began its second orbital transfer on Friday afternoon, one more step forward in its 380,000-km journey to the moon.

Instruction for the orbital transfer was issued by the Beijing Aerospace Control Center (BACC) at around 4:50 p.m., aiming to transfer the satellite to an 24-hour orbit with an apogee of 70,000 kilometers, up from the former 50,000 km.

01101001
2007-Oct-28, 02:22 AM
Xinhuanet: China's lunar probe in good conditions (http://news.xinhuanet.com/english/2007-10/27/content_6957374.htm)


All the systems of China's lunar probe Chang'e-1 are in good conditions with the high energy solar particle detector and the low energy ion detector functioning properly on Saturday, according to the moon probe team.
[...]
Ji said the probe will stay on the 24-hour orbit before it moves further from the earth to a 48-hour orbit on Oct. 29, which runs more than 260,000 kilometers.

The satellite is expected to fly to the moon in a real sense after it enters the earth-moon transfer orbit on Oct. 31, and it is planned to arrive in the moon's orbit on Nov. 5.

01101001
2007-Oct-28, 05:16 PM
Aviation Week: China Hopes Chang'e Will Pave Way For Lunar Rover (http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=space&id=news/aw102907p2.xml)


China will take a key step in advancing its space capabilities this week with its Chang’e 1 lunar mission, assuming it can overcome such key challenges as tracking and control in deep space. A successful flight could open the way for China to launch a rover as early as 2012 and return Moon rocks by 2017.
[...]
Another hurdle Chinese engineers will have to overcome is keeping the spacecraft’s sensors facing the Moon to collect their data, while communications antennas face the Earth and the solar panels face the Sun. “During the flight orbiting the Moon, the three bodies of the Earth, the Moon and the Sun [revolve] relatively, so the attitude control is a three-vector control process,” project documents explain.

These are not trivial matters. While the U.S. and Russia dealt with such problems decades ago, that hardly makes it any easier for Chinese engineers trying for the first time. For starters, China has no deep-space network, so telemetry, tracking and control (TT&C) of the spacecraft could prove difficult.

“The biggest challenge in the Phase I of the Lunar Exploration Program is the TT&C system, because its transmission capability should reach a long-enough distance,” say the project plans. “The distance from east to west in China is only 5,000 km., which is also a challenge to TT&C continuity,” since antennas will have no line of sight to the spacecraft during much of its orbit.

01101001
2007-Oct-29, 06:36 AM
China Daily: China promises to make public data collected by lunar probe (http://www.chinadaily.com.cn/china/2007-10/29/content_6213562.htm)


China will make public the data collected by its first lunar probe Chang'e-1 and share them with foreign countries, Chinese official in charge of the moon exploration program said on Monday.

"The data sent back by Chang'e-1 will be provided with domestic research institutions and then we will share them with the foreign peers one year later according to international practice," said Hu Hao, head of the moon exploration center under the Commission of Science Technology and Industry of National Defense (COSTIND).

China Daily: Chang'e I to turn on image sensors after 3rd transfer (http://www.chinadaily.com.cn/china/2007-10/29/content_6211946.htm)


China's lunar probe Chang'e I is expected to arrive at the apogee of more than 120,000 kilometers from the earth on Monday afternoon after its third orbital transfer after launch, according to the moon probe team. [Full Coverage]

Ultraviolet image sensors installed on the satellite will begin to work to collect information on the earth and the moon after it enters the 48-hour orbit, Wang Yejun, chief engineer with the Beijing Aerospace Control Center (BACC) told Xinhua.

The images it collects will be transmitted back to the earth when it enters the lunar orbit, Wang said.

Launch window
2007-Oct-29, 07:10 PM
more on Chinese heavy lift ?

http://news.xinhuanet.com/english/2007-10/29/content_6971942.htm
Six thousand people to be resettled to make way for new space launch center

Mayor Yan Zheng of Wenchang city, on Hainan's northeastern coast, said at a meeting on land acquisition on Monday that 1,200 hectares would be obtained for the center.

01101001
2007-Oct-29, 11:15 PM
Flightglobal.com comment: China's great leap for commercial space? (http://www.flightglobal.com/articles/2007/10/29/218964/comment-chinas-great-leap-for-commercial-space.html)


If China does pass legislation next year enabling the public private partnerships (PPP) Flight International has been informed are planned for its spaceflight programme, a new space race based on market share, not planting flags, could be emerging - and China would be a market leader.
[...]
While its Chang'e 1 lunar orbiter, launched last week, scans the surface of the Moon, the world's most populous nation could really be looking for a return on its investment. For China, it no longer matters if the rocket is public or private just as long as it has a revenue stream.

Xinhuanet: China's Chang'e-1 lunar probe begins third orbital transfer (http://news.xinhuanet.com/english/2007-10/29/content_6971726.htm)


China's lunar probe Chang'e-1 began its third orbital transfer on Monday afternoon, one more step forward in its 1,580,000-km journey to the moon.

Instructions for the orbital transfer was issued by the Yuanwang-3 space tracking ship in south Pacific at around 5:56 p.m., aiming to transfer the satellite to a 48-hour orbit with its apogee up from 70,000 km to 120,000 km.

01101001
2007-Oct-31, 03:49 PM
Xinhuanet: China's lunar probe completes last orbital transfer before leaving earth (http://news.xinhuanet.com/english/2007-10/31/content_6983740.htm)


China's lunar probe Chang'e-1 completed its fourth orbital transfer on Wednesday afternoon, a critical move to push it to fly to the moon "in a real sense."

The engine on the probe was started at 5:15 p.m.. Thirteen minutes later, the probe was successfully shifted to the earth-moon transfer orbit with an apogee of about 380,000 km.

The main engine of Chang'e-1 started operation and helped raise the speed of the probe to 10.916 km per second in a few minutes before the satellite reached the "entrance" of the earth-moon transfer orbit, said Zhu Mincai, head of the Beijing Aerospace Control Center (BACC).

The probe will then start to fly to the moon "in a real sense," Zhu said.

01101001
2007-Nov-04, 08:50 PM
Xinhuanet: China's 1st lunar probe to reach moon orbit Monday morning (http://news.xinhuanet.com/english/2007-10/31/content_6983740.htm)


BEIJING, Nov. 4 (Xinhua) -- China's first lunar probe, Chang'e-1, will reach the moon's orbit Monday morning and currently, it was traveling on the expected trajectory, scientists said Sunday.

Chang'e-1, following the instructions of the Beijing Aerospace Control Center (BACC), will carry out its first braking at perilune at about 11:00 a.m. Monday to slow down, so that it can be captured by the lunar gravity and become a circumlunar satellite, said Wang Yejun, chief engineer of BACC.
[...]
After the probe entered the moon's orbit, it would brake several more times to slow down, scientists have said.

It is scheduled to relay the first picture of the moon in late November and would then continue scientific explorations of the moon for a year.

If they're using China Standard Time, that would be about 6 hours from now.

Launch window
2007-Nov-05, 06:54 AM
Chinese lunar probe enters moon's orbit

http://news.sbs.com.au/worldnewsaustralia/chinese_lunar_probe_enters_moons_orbit_134512

JonClarke
2007-Nov-05, 11:58 AM
When was the last time there were two operational satellites in lunar orbit?

Jon

djellison
2007-Nov-05, 01:56 PM
A couple of weeks ago when Kaguya released its first sub satellite :)

There are currently four operating satellites in orbit around the Moon.

Although your question is a good one - it might even mean going as far back as the last LEM and CSM from Apollo 17.

Doug

yaohua2000
2007-Nov-05, 03:20 PM
Trip to Xichang, part 1 (http://www.yaohua2000.org/blog/2007/11/trip-to-xichang.html)

01101001
2007-Nov-07, 01:19 AM
Trip to Xichang, part 1 (http://www.yaohua2000.org/blog/2007/11/trip-to-xichang.html)

Sounds like it might be easier to launch a probe to the moon than to see a probe get launched ot the moon. Thanks.

Xinhua in China Daily: Chang'e-1 completes second braking (http://www.chinadaily.com.cn/china/2007-11/06/content_6234339.htm):


China's first lunar probe, Chang'e-1, completed its second braking on Tuesday's morning, which further decelerated the satellite to get it closer to its final orbit.

Chang'e-1, following the instructions of the Beijing Aerospace Control Center (BACC), started the second braking at 11:21 a.m. and entered a 3.5-hour orbit with a perilune of 213 km and an apolune of 1,700 km at around 11:35 a.m. after completing the braking.
[...]
"The precise ground maneuvers and orbital transfers have saved a lot of fuel, which may prolong the probe's working time on its final orbit by around one year," Bian said.

Zhu Mincai said that the probe will brake for the third time at around 8:09 a.m. on Wednesday to enter its final orbit, marking success of the probe's whole flying journey to the moon.

Hmm... might have already achieved final orbit. It's now 0918 in China.

Edit: Yep. Did a refresh and there it was: Shanghai Daily: Chang'e 1 reaches final orbit (http://www.shanghaidaily.com/article/?id=337254&type=National)


CHINA'S first lunar probe Chang'e 1 completed its third braking maneuver and reached its final planned lunar orbit this morning, allow the country's space administration to call the flight a success.

The Beijing Aerospace Control Center issued the braking command at 8:24am as Chang'e 1 roamed to the perilune – the point on an elliptical lunar orbit that is nearest to the moon -- and it decelerated and entered the 127-minute working orbit at 8:34am.

The craft, named after a mythical Chinese goddess who flew to the moon, slowed its speed to 1.59 kilometers a second from 1.8 km a second when it entered the round orbit — where it will stay for a year with its perilune at a steady 200km from the moon surface for scientific explorations.

Congratulations to China, the Chinese and all involved!

KaiYeves
2007-Nov-07, 02:19 PM
There are currently four operating satellites in orbit around the Moon.
Oh, beautiful New Century!

01101001
2007-Nov-08, 05:51 PM
Flightglobal.com comment: China's great leap for commercial space? (http://www.flightglobal.com/articles/2007/10/29/218964/comment-chinas-great-leap-for-commercial-space.html)

In that vein...

Wait. Now that we have a final lunar orbit achieved, it's probably time to put this launch thread to bed, and start one about the Chang'e 1 mission. I'll do that. See topic Chang'e 1: China's lunar orbiter (http://www.bautforum.com/space-exploration/66826-change-1-chinas-lunar-orbiter.html).

Article continued there.