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Chang'e 4 farside landing mission
A.Nemo
post Jul 15 2015, 01:35 PM
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Preliminary Suggestions for International Cooperation on Chang'E-4 Lunar Probe
Xu Y. (China)
http://www.unoosa.org/pdf/pres/copuos2015/...2015tech08E.pdf

An Introduction of Chang’E-4 Probe:
Probe(Lander,Rover)+ Relay Statellite
Soft-landing on lunar farside
Landing and roving exploration
Will be launched between 2018 and 2019

the probe:
Chang’E-4 probe,lander and rover have the same technical status with the Chang’E -3; but exploration will be redesigned; the payload will be reconfigered; The name of the probe might be changed.
Chang’E-4 probe is a backup spacecraft of Chang’E -3 probe. By now, all platform products of the probe have been manufactured, waiting for further AIT.
The probe will be launched by a long March 3B rocket from the Xichang Statellite Launch Center(XSLC) which is the same way with the Chang'E-3 between 2018 and 2019

The relay statellite:
will be first launched into a lunar transfer orbit about the end of 2018 in the whole mission, then starts its earth-to-moon jurnery alone, and will enter and run in a Halo orbit around the Earth-Moon L2 point; the design life is 3 years.
would provide relay service for the probe and the Earth, and carry out exploration.

Engineering objectives are as follow.
To realize the first soft landing on the lunar farside and perform exploration in human history.
To demonstrate technologies of lunar data relay, landing and roving on complicated terrains of the lunar farside, and lunar night power generation;
To perform further detailed survey on lunar environment in order to lay a foundation for subsequent lunar exploration mission.

Tentative Scientific objectives are as follow.
To study lunar surface dust features and its formation mechanism;
To perform in-situ measurement of lunar surface residual magnetism
and study its interaction with solar wind;
To study lunar surface temperature and particle radiation environment;
To perform lunar surface topology and material composition analysis,
shallow-layer structure survey and study;
To explore and study lunar interior structure of spheres;
To perform lunar based VLF astronomical observation and study
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A.Nemo
post Jul 15 2015, 01:43 PM
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there is a puzzle news:
http://www.cnsa.gov.cn/n1081/n7529/n308608/725881.html
中欧深空探测研讨会在北京召开
发布日期:2015年07月14日 字体:【大】【中】【小】
  2015年7月9日至10日,中国国家航天局与欧洲空间局在京召开中欧月球探测研讨会,会议围绕嫦娥四号目标任务和有效载荷搭载进行了讨论。
  会上,欧洲空间局相关专家提出利用嫦娥四号搭载月震仪、快闪相机、激光反射器等载荷的建议。经商议,双方初步确定将月震仪和快闪相机等四个有效载荷纳入合作范围。欧洲空间局负责协商欧洲载荷以及其总成与接口,中方通过双边航天局长会晤推动建立载荷研制国技术团队,争取在2018年提交正样。
  来自法国巴黎索邦大学、瑞士苏黎世理工、澳门科技大学以及中国国家航天局探月与航天工程中心、中国科学院、北京大学、中国科学技术大学、中国地质大学等单位的专家学者参加了会议。

laser reflector, it means Chang'e 4 will be landed on nearside, What will happened?
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Juramike
post Jul 15 2015, 01:49 PM
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(Edited!)


--------------------
Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Phil Stooke
post Jul 15 2015, 03:52 PM
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The current Chinese plan is to land on the far side. The laser reflector is suggested as a high priority payload by an ESA group looking at cooperation. The two don't work together, so we don't know which way it will go. But it's not a contradictory plan, it's an external suggestion to change the plan. Probably won't happen, because the prestige (and science value) of the first far side landing is likely to trump that one payload suggestion.

Incidentally, there's really no reason why that laser reflector shouldn't be mounted on the landing stage of the Chang'E 5 sample return lander, which will be near side. That's a far more likely outcome than flying it on CE4.

Phil



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... because the Solar System ain't gonna map itself.
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Yeh
post 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).
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tolis
post Sep 9 2015, 01:46 PM
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QUOTE (Yeh @ Sep 8 2015, 02:38 PM) *
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).


In that case, they will need a relay satellite, either in lunar orbit or further afield eg Earth-Moon L2
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Phil Stooke
post Sep 9 2015, 01:54 PM
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It's at L2. More details here:

http://forum.nasaspaceflight.com/index.php...;attach=1064984

Phil



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bobik
post Jan 6 2016, 12:55 PM
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QUOTE (A.Nemo @ Jul 15 2015, 02:43 PM) *
there is a puzzle news: ...

This refers probably to the micro-reflector array INRRI (Instrument for landing-Roving laser Retroreflectors Investigations). INRRI has been sized to give the right signal for LOLA (Lunar Orbiter Laser Altimeter) on LRO. By the way, one INRRI was mounted on EDM Schiaparelli as long-time scientific asset.
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Thorsten Denk
post Jan 14 2016, 01:39 PM
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It seems that Cháng'é 4 will go to the lunar farside end of 2018!

QUOTE
SinoDefence ‏@SinoDefence
Chang'e 4 mission given goahead.
Relay sat in Jun 18, followed by landing on Moon far side in late 2018.

https://twitter.com/SinoDefence/status/687618528933998592
http://www.chinadaily.com.cn/micro-reading...t_14484287.html

Thorsten
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bobik
post Apr 14 2016, 06:01 PM
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German "Lunar Lander Neutron Dosimetry" (LND) experiment is going to the lunar far side.
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A.Nemo
post Apr 15 2016, 08:19 AM
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China Follow-on Luna Exploration Projects:
2018,Chang'e-4 to farside of Moon
2023,Chang'e-6(?) ,sample&return from farside of Moon
2025,Chang'e-?, south pole landing & large area cruise
2027,Chang'e-?, north pole landing & ISRU Experimental

Attached thumbnail(s)
Attached Image
 
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bobik
post May 17 2016, 06:45 AM
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A joint Dutch and Chinese low frequency receiver installed on the relay satellite and the Swedish Advanced Small Analyzer for Neutrals (ASAN) instrument for the rover are two other European contributions to the Chang'e-4 expedition.
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Phil Stooke
post Jun 3 2016, 02:58 PM
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http://www.chinaspaceflight.com/satellite/.../CE-4/CE-4.html

Chang E IV: June 2018 Long March rocket four C relay communications satellite in late 2018 Long March III B rocket lander and inspection devices.

This item includes an image of the general landing area in the Apollo basin. Long Xiao had suggested to me at LPSC that this would be the (or a) target

http://www.chinaspaceflight.com/usr/upload...41417135287.jpg

Phil


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Phil Stooke
post Jun 20 2016, 11:14 AM
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A fascinating new paper is now online - Wang and Liu (2016), A Chang’e-4 mission concept and vision of future Chinese lunar exploration activities, Acta Astronautica (available online 11 JUne 2016). If you have access!

It suggests that Apollo basin is the most likely target but other farside basins are possible. Also looks ahead to future missions, including a suggestion that a robotic station could be built up, possibly as a precursor to human flights. From 3 to 5 landers near the south pole, carrying between them up to a dozen rovers, to build the station, which has obvious echoes of ESA's robotic lunar village.

Phil


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Explorer1
post Oct 2 2016, 05:11 PM
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http://spaceflightnow.com/2016/09/29/china...de-of-the-moon/

Near side sample return might be launched next year, while the far side relay could be used by other space agencies for their own missions. It would certainly save good money!
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