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Yeh
Posted on: Sep 8 2015, 01:38 PM


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Today there's an official confirmation from Xinhua (the state media) that CE4 will be land on the farside: http://news.xinhuanet.com/tech/2015-09/08/c_1116498505.htm (in Chinese).
  Forum: Chang'e program · Post Preview: #225994 · Replies: 459 · Views: 1157393

Yeh
Posted on: Sep 3 2015, 05:14 PM


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QUOTE (Phil Stooke @ Sep 2 2015, 06:06 PM) *
One way to interpret the Chinese text is that this imaging from 30 Aug. to 2 Sept completed the imaging of the fifth potential landing site. I don't know where any of them are yet - if anyone knows please let me know. But nice to know there are five candidates.

EDIT - the more I think about it, the more I suspect that the 'fifth' referred to is the fifth spacecraft, Chang'E 5. Google Translate is a blunt instrument for probing difficult questions. There might only be one site after all. I hope we will learn more soon.

EDIT AGAIN - a bit of detective work. The terminator was crossing the Mare Crisium area over the few days the images were taken. I had been expecting a landing in Oceanus Procellarum, but the sun would have been overhead there, and these images have shadows suggesting a lower sun elevation. Possibly a site in the eastern maria, but west of Crisium. Not much to go on yet.

Phil


Phil -- I believe the "fifth" indeed refers to the fifth probe in the Chang'E series. And it is from a verified source that CE5 will land in Oceanus Procellarum: http://news.xinhuanet.com/tech/2014-09/04/c_1112367913.htm (Chinese).

QUOTE (elakdawalla @ Sep 3 2015, 11:29 AM) *
Came across this July 29 item on the CAST website having something to do with a "3D mode" for a Chang'e 5 camera, but I can't make heads or tails of the Google translation.


It is about a documentary film or something -- they take the film in 3D. Nothing to do with CE5 or CE5T1 the probes.
  Forum: Chang'e program · Post Preview: #225865 · Replies: 351 · Views: 387426

Yeh
Posted on: Sep 2 2015, 09:46 PM


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CE5T1 completes imaging CE5's landing zone: http://news.sina.com.cn/c/2015-09-02/203732269747.shtml (Chinese)

The resolution is said to be 1m/pix. CE5T1 also verify the techniques needed to control the ascending module and service module.
  Forum: Chang'e program · Post Preview: #225841 · Replies: 351 · Views: 387426

Yeh
Posted on: Dec 7 2014, 11:14 PM


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It looks like the Mars 2020 mission has got a GO from SASTIND:

http://news.sina.com.cn/c/2014-11-29/061031220714.shtml

An orbiter and a rover is planned for the 2020 mission. Nothing new from earlier rumors, except the go-ahead message from SASTIND.
  Forum: Tianwen 1- 2020 Orbiter/Lander · Post Preview: #216108 · Replies: 70 · Views: 164389

Yeh
Posted on: Nov 13 2014, 05:15 AM


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http://tech.sina.com.cn/d/2014-11-10/doc-i...vx4508331.shtml

In Chinese, so I just translate a few key points:

Purple Mountain Observatory (PMO) and CAST is now developing digging+analysing robots used on asteroid exploration. PI: Ji Jianghui (who has been the PI of CE2 flyby to Toutatis). Apophis is on the candidate list, among with a C-type NEO (my educated guess: 1996 FG3). The news noted that the whole thing is still "conceptional", but they usually won't say a word unless they have been seriously working on it...

Still 15 years away, but absolutely something great to expect! Will certainly keep an eye on it.
  Forum: Cometary and Asteroid Missions · Post Preview: #214982 · Replies: 3 · Views: 12843

Yeh
Posted on: Nov 2 2014, 04:57 PM


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QUOTE (nprev @ Nov 1 2014, 10:47 PM) *
Really! That's unexpected, and very interesting. What are the objectives of these maneuvers, Yeh? I'm guessing navigation practice and additional systems testing.


According to the report, it is for "verification of navigation/control technique of the Chang'e 5 mission".

Re Paolo -- interesting, I am seeing discussion on 9ifly.cn (a forum comparable to unmannedspaceflight.com in China) that also speculating that Chang'e 5 or 6 may be targeting the far side of the Moon. There are some calculations that seems to conclude that it is possible to achieve this with CZ5 launch system. Link (in Chinese): http://bbs.9ifly.cn/forum.php?mod=viewthre...ge=19#pid331129
  Forum: Chang'e program · Post Preview: #214479 · Replies: 351 · Views: 387426

Yeh
Posted on: Nov 2 2014, 03:25 AM


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http://www.81.cn/jwgz/2014-11/01/content_6206266.htm

Chang'e 5 T1 service module mission extends to May 2015. The module will fly to EML2 point first, and then to a lunar orbit.
  Forum: Chang'e program · Post Preview: #214469 · Replies: 351 · Views: 387426

Yeh
Posted on: Nov 1 2014, 02:58 AM


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QUOTE (Yeh @ Oct 31 2014, 09:18 PM) *
I am relaying some images taken by a PLA journalist at the control center and posted at http://www.81.cn/jwgz/2014-11/01/content_6206104.htm , including an actual image during the reentry phase.

At page 11 of that webpage, there is a cartoon showing the procedure of the process. Emily's making a good point (https://twitter.com/elakdawalla/status/528366721875193857) that the service module might still be in the orbit. The cartoon mentioned that a maneuver was performed "to avoid collision with the capsule" but I am not seeing any information about the service module after the separation.


http://news.cntv.cn/2014/11/01/ARTI1414801849741743.shtml
1:00 videos of separation between service module and capsule; starting 2:40 live video of capsule reentry.

I am answering myself... according to SASTIND head Xu Dazhe, service module is now "on its way back to the Moon" for "extending mission": http://news.cntv.cn/2014/11/01/VIDE1414801845491297.shtml at 1:40 (in Chinese).
  Forum: Chang'e program · Post Preview: #214436 · Replies: 351 · Views: 387426

Yeh
Posted on: Nov 1 2014, 02:18 AM


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I am relaying some images taken by a PLA journalist at the control center and posted at http://www.81.cn/jwgz/2014-11/01/content_6206104.htm , including an actual image during the reentry phase.

At page 11 of that webpage, there is a cartoon showing the procedure of the process. Emily's making a good point (https://twitter.com/elakdawalla/status/528366721875193857) that the service module might still be in the orbit. The cartoon mentioned that a maneuver was performed "to avoid collision with the capsule" but I am not seeing any information about the service module after the separation.
  Forum: Chang'e program · Post Preview: #214434 · Replies: 351 · Views: 387426

Yeh
Posted on: Apr 16 2014, 08:01 PM


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It seems this doesn't fit into any topics, so I start a new one...

The Wen Wei Po of Hong Kong published a long, exclusive interview with Ouyang Ziyuan, the CLEP chief scientist known as "the father of Chang'e", Ouyang mentioned a lot of details about Chang'e 3, 4 and some future planetary missions...

This one address the issue of Chang'e 3: http://paper.wenweipo.com/2014/04/16/CH1404160017.htm , there is some details about how Yutu hibernates and what isn't working at the moment (APXS is on the list).

This one discloses the discussion for Chang'e 4: http://paper.wenweipo.com/2014/04/16/CH1404160016.htm , says that it may land on the South Pole, or test the lunar re-launch technique, or may be directed to Mars.

This one talks about CNSA's future visions: http://paper.wenweipo.com/2014/04/16/CH1404160020.htm , nothing definitive yet but it mentioned that the CAS space science development plan targets a manned lunar mission in 2020-30s. Ouyang comments that a Mars mission is yet to be approved but "2018 may be a good guess".

ADMIN: Please note that while the final report contains reference to manned spaceflight, UMSF's longstanding rules and guidelines does not permit discussion on that topic. See rule 1.6. Thank you.
  Forum: Chang'e program · Post Preview: #209043 · Replies: 1 · Views: 21400

Yeh
Posted on: Mar 12 2014, 07:14 PM


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Phil - to me it seems Mr. Yin is just repeating what happened in Feb. It is a common practice for the delegrates to say something positive at the CPPCC, so no, I don't think he is saying Yutu's waking up.
  Forum: Chang'e program · Post Preview: #208173 · Replies: 150 · Views: 463041

Yeh
Posted on: Mar 10 2014, 11:03 PM


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News this morning: http://news.sina.com.cn/c/2014-03-11/033929674756.shtml (in Chinese)

Ye Peijian mentioned that a "test probe" for Chang'E 5 will be launched late this year. The probe "will not land on the Moon or take samples", "simply travel to the Moon and come back". But he did not indicate this will be Chang'E 4 or just as a separate test mission.
  Forum: Chang'e program · Post Preview: #208128 · Replies: 150 · Views: 463041

Yeh
Posted on: Feb 13 2014, 12:17 AM


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CNSA confirmation:

http://www.weibo.com/1488228740/Awubn3MXf

官方消息:探月工程新闻发言人裴照宇昨晚表示,国产“玉兔号”月球车已全面苏醒,状态趋于好转,但是出现问题的“机构”仍然有待进一步恢复。只有苏醒了才有排故的时间,希望得到很好的救治和疗养,兔子好好休个假。

CLEP news officer Pei Zhaoyu said the Yutu rover is fully awaken and is getting better, but the mechanical problems are yet to be solved.

UPDATE: CAS official microblogger says the same thing: http://www.weibo.com/3494982177/AwufW7cDi . There is an updated news brief from Xinhua there, but says nothing relevant to the exact problem.
  Forum: Chang'e program · Post Preview: #207533 · Replies: 150 · Views: 463041

Yeh
Posted on: Feb 12 2014, 05:33 PM


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From my understanding of CNSA's habit, this (a very brief Xinhua news; CNSA remains silent) may mean that they got another 14 days trying to deal with the mechanical breakdown.

If they have fixed it, I don't see a reason for them to hold the news...

But anyway, the reconnection is good and encouraging. At least there are chances to solve the problem.
  Forum: Chang'e program · Post Preview: #207516 · Replies: 150 · Views: 463041

Yeh
Posted on: Feb 12 2014, 01:49 PM


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From Xinhua this morning: "Bunny seems getting better, there is evidence that he is awake, we will see." But no further details are disclosed.

http://news.sina.com.cn/c/2014-02-12/21222....shtml?wbf=more (in Chinese)
  Forum: Chang'e program · Post Preview: #207506 · Replies: 150 · Views: 463041

Yeh
Posted on: Feb 10 2014, 05:41 AM


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From a credible source from Weibo: "we should get message from Yutu around Feb 10 at 3pm (Beijing Time; that's 7h UT, or 2am EST), and we will know if it is up for work, or cannot move anymore".

http://www.weibo.com/2032349831/Aw3NFAa6l
  Forum: Chang'e program · Post Preview: #207384 · Replies: 59 · Views: 189396


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