Chinese Moon Lander

Kishore032

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Now the media will go nuts about the Asian space race ...



Chinese moon lander on the verge of launch
BY STEPHEN CLARK
SPACEFLIGHTNOW.com
Posted: November 27, 2013

China has scheduled the launch of an ambitious robotic lunar rover as soon as Sunday on a quest to achieve the first soft landing on the moon in more than three decades.


Artist's concept of the Chang'e 3 lander and rover. Credit: Beijing Institute of Spacecraft System Engineering

The Chang'e 3 mission is China's third moon probe, following two successful orbiters that surveyed the lunar surface and mapped landing zones.

Chinese officials say the mission is set for launch in early December, with landing on the moon scheduled for mid-December. China has not officially disclosed the mission's launch or landing dates.

But an aeronautical notice issued to warn pilots of an impending launch indicates the solar-powered rover is set for liftoff Sunday shortly after 1720 GMT (12:20 p.m. EST) from the Xichang space center in southwestern China's Sichuan province.

The launch will come in the middle of the night in China at approximately 1:20 a.m. Beijing time.

A Long March 3B rocket will boost the probe on course toward the moon, where the spacecraft will enter orbit five days after launch before dropping to the lunar surface for landing some time in mid-December, according to Wu Zhijian, a spokesperson for China's State Administration of Science, Technology and Industry for National Defence, or SASTIND, which is managing the Chang'e 3 mission.

The mission is China's first try to land a spacecraft on the moon - or any other celestial body - and it marks a new phase in the country's exploration efforts, which include a lunar sample return mission before the end of the decade.

The lander reportedly weighs about 3,800 kilograms, or about 8,377 pounds, fully loaded with propellant. It's dimensions measure a bit larger than a sports utility vehicle.


The Chang'e 3 lander is enclosed inside the Long March 3B rocket's payload fairing. Credit: China Aerospace Science and Technology Corp.

The Chang'e 3 lander will descend from lunar orbit and use rocket engines to settle softly on the moon's surface in a region known as the Bay of Rainbows, or Sinus Iridum, on the upper-left part of the moon as viewed from Earth.

The Bay of Rainbows has never been explored by a moon lander before. The Chang'e 2 mission, China's second lunar orbiter, mapped the Bay of Rainbows in detail after its launch in October 2010.

Once the four-legged lander touches down, the mission's rover will drive onto the lunar surface on a ramp.

The rover has six wheels and has a mass of about 140 kilograms, or about 308 pounds, according to Xinhua. It is powered by solar energy but carries radioisotope heater units to keep the rover warm on cold lunar nights, according to a paper written by researchers at the Beijing Institute of Spacecraft System Engineering and published in Science China.

Chinese officials announced Tuesday the rover is named "Yutu" after a campaign to solicit naming suggestions from the public. Yutu was the most popular submission, and it means "jade rabbit" in Chinese, Xinhua reported.

The Chang'e lunar program is named after the Chinese goddess of the moon, and Yutu the rabbit is her companion in Chinese mythology.
 
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W.G.Ewald

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China has been methodically and patiently building up the key elements needed for an advanced space programme - from launchers to manned missions in Earth orbit to unmanned planetary craft - and it is investing heavily.

This comes as China is seen by neighbouring countries in Asia as flexing its muscles, most recently over control of airspace over the South China Sea. Chinese officials stress their desire to cooperate on space projects but lunar exploration is also regarded as a statement of national prowess.

Ouyang has himself been blunt about this in the past, as here in 2006: "Lunar exploration is a reflection of a country's comprehensive national power," he said in an interview with the official newspaper People's Daily. "It is significant for raising our international prestige and increasing our people's cohesion."
BBC News - Why China is fixated on the Moon
 

Free Karma

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Anyone know the timing of this..and if it's being broadcasted on youtube (or other streams)?

It's going to be terrible if the broadcast is on chinese youtube (yoko?), it's so laggy, internets take time to cross the great firewall.

Edit: On the above bbc link I went down...and the comments loaded up, and sure enough, another british guy screaming his heart out saying they gave china millions of dollars of aid for this program to happen.... But it seems like they've increased the moderation after the mars launch.
 
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Ray

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OT but the Chinese Moon Cake that they have during the harvest season called Zhongqiujie is a delight to the taste buds.

I believe there are a variety of such mooncakes, but I had tried the Cantonese mooncake.
 

cw2005

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Cantonese mooncakes are too sweet and no good to the body. Once a year and eat 1/4 of the cake is the maximum dosage.
 

pmaitra

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Here is a picture of the Chinese Moon Rover. The design of the wheel spokes is very intelligent indeed. It has been made in a way that it reduces weight and at the same time allows the Lunar dust to fall off as the vehicle moves forward. What I find odd is that contraption sticking out in the front and touching the ground. Are the Chinese paranoid that someone will have planted anti-personnel mines out there?

Source: http://www.bbc.co.uk/news/25141597
 

Free Karma

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GJ with the launch China!

The next date to watch out for is the 6th, when the lander will be inserted into moon orbit, and then 16th, when the lander descends down to the moon.

The robotic arm in front contains two instruments
nstalled on the robotic arm of the Chang'e 3 rover is an APXS payload. More correctly, the APXS sensor head is installed on the robotic arm while the electronics box resides inside the rover body. Survival of APXS during lunar night is ensured by a radioisotope heater unit.

APXS utilizes a combination of methods to determine elemental chemistry of regolith and rocks. Those methods include Particle-Induced X-Ray Emission and X-Ray Fluorescence. The instrument uses a 30 Millicurie radiation source for X-Ray spectroscopy to reveal the abundance of major elements down to trace elements.
and

The second payload that is installed on the robotic arm is a Visible/Near-Infrared Imaging Spectrometer to make in-situ measurements of lunar minerals and resources distribution. The instrument covers a spectral range of 0.45 to 2.4 micrometers allowing the instrument to detect lunar minerals and measure abundances with a maximum spectral uncertainty of 10%. It is the first such payload to be used on a lunar rover.
Chang'e 3 - SPACEFLIGHT101


I like how they have many cameras on the various stages of the craft, makes for some good photo ops!

Here are images of the lander separating from the rocket:



view of earth from the lander:
 

pmaitra

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I like how they have many cameras on the various stages of the craft, makes for some good photo ops!
This project is very much about propaganda as much as it is about whatever else they said their stated goals were.
 

shiphone

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actually it is a design lost in the bid....this is a product from a Shanghai based team and that ' mock-up' was displayed in the Industry Expo Shanghai 2013 last month...obviously the extended hand is some kind of ' lunar soil' sample collector...
-------------------

the 'winner' was also disclosed last month and was named as 'YuTu' lately...

 
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pmaitra

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actually it is a design lost in the bid....this is a product from a Shanghai based team and that ' mock-up' was displayed in the Industry Expo Shanghai 2013 last month...obviously the extended hand is some kind of ' lunar soil' sample collector...
-------------------

the 'winner' was also disclosed last month and was named as 'YuTu' lately...


Thanks, and I stand corrected. So the one that actually won has the Soviet Lunokhod style spoked wheels. Cool. I guess that keeps the wheels very light and improves suspension.

Edit:
@shiphone
I apologize. I wanted to respond, but hit the wrong button and ended up editing part of the post. Could you please repost?
 
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shiphone

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the 'lost' edited or the added part:

the full broadcast of the Launch was quite long...here are the four clips (15 mins each) covering the whole process..but so far only two of them have been uploaeded...

1/4
[video=youtube_share;VdPGxtWD7ow]http://youtu.be/VdPGxtWD7ow[/video]
2/4
[video=youtube_share;SY7G0aEWWCA]http://youtu.be/SY7G0aEWWCA[/video]
 

pmaitra

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An interesting comment from BBC forum:

2. John Byng
29TH NOVEMBER 2013 - 15:12

Why is China fixated on the Moon? Because they are smart and see potential.

Why is the BBC so fixated on the American phenomena of "Black Friday"?

It was on Radio 4's Today.
It has two articles on the BBC website.

Now that is a mystery.
 

pmaitra

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Another Brit cribbing about "aid" given to PRC:

117. anotherfakename
30TH NOVEMBER 2013 - 21:01

So the Chinese can afford to finance a railway down east africa, a moon shot and but all the rare earths available to make batteries, but the good old stupid idiotic British still give them millions in aid. You couldn't write a better farce.
Looks like cribbing has become the national pastime of the Brits.
 

roma

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double-post - pls delete
 
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roma

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china's "fixation" on the moon is i believe for good strategic and logical reasons

(1) it is relatively nearby and they we could harvest see quick results ..compare mangalayaan -
we have to wait 300 days to know if we finally succeeded or not ...
they are gonna get feedback fast one or two day time frame and
and take corrective action fast , so their learning curve is faster and they gain experience
more rapidly - while we wait for 300 days, meanwhile they have been learning faster
and accumulated more real knowledge

(2) the moon contains sufficient quantity of minerals worthy of being mined
- dont get romantic - the chinese intention is to mine
the surface of the moon for minerals - which can be used by their military as well

(3) by concentrating on the moon, they are focusing their objective
and getting more intensive experience in a specific area - this will
all come in useful as they focus on sending a manned mission there

(4) i am not criticizing mangalayaan because the experience gained in the
area of long-distance communications and control will be useful, but i think the chinese
are being more deliberately focused - we can also do likewise

(5) lets also focus on the moon - more - rather than go for too distant objectives
if we leave the moon to the chinese - that will be another strategic blunder
not very different from what Nehru did in 1962 by ignoring all the road-building they did
and pretending it didnt matter
- except this time the blunder occurs .... on the moon !!
 
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Free Karma

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We were supposed to go to the moon, in collaboration with Russia But..

Although ISRO finalized the payload for Chandrayaan-2 per schedule,[13] the mission was postponed,[4] and rescheduled to 2016 because Russia was unable to develop the lander on time.[14][15] Roscosmos withdrew in wake of the failure of the Russian Phobos-Grunt mission to Mars, reason being technical aspects connected with the Phobos-Grunt mission were also used in the lunar projects, which need to be reviewed.[14] When Russia cited its inability to provide the lander even by 2015, India decided to develop the lunar mission independently.[4]
There is no time frame set for the mission as this mission requires the GSLV rocket, which is still in experimental stage. At least two successful GSLV test launches are required for it to be used as a launch vehicle.
So while we build a rover and wait for the gslv....

why waste the opportunity to test out our capability to plan and execute long distance travel, which will surely be of use later, and also launch other probes for $$$!!!
 

Abhijeet Dey

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Looks like cribbing has become the national pastime of the Brits.
In this article the BBC have not even mentioned poverty in China with respect to their moon mission. Whereas the British are free to criticize India's mars mission and lack of social well being for poor people in India.

The reason: Our Indian scientists have not been able to explain properly the future benefits of India's mars mission to the media. Instead they are comparing this mission with weather satellites, cyclone alerts and how to catch more fish which have no relation with Mars whatsoever.
 

Tolaha

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As long as CCP doesn't start claiming moon for itself after it lands something on it! :heh: Joking!
Best of luck to China with the Moon Lander. More such missions from different countries can only be good for our future.
 

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