Is it about time that this thread get moved out of the live section and somewhere more appropriate? I don't know if that should be the science section or the Chinese section (although I cringe that the Chinese section is called "Chinese Launchers" and what is often discussed is not rockets but missions--the rocket is only important for about ten minutes and then the spacecraft can work for years).I did hear some interesting information about this subject that I would like to add to the discussion. It's just that I don't think this mission is really appropriate for the live section. What do the rest of you think?
Quote from: Blackstar on 04/02/2015 05:50 pmIs it about time that this thread get moved out of the live section and somewhere more appropriate? I don't know if that should be the science section or the Chinese section (although I cringe that the Chinese section is called "Chinese Launchers" and what is often discussed is not rockets but missions--the rocket is only important for about ten minutes and then the spacecraft can work for years).I did hear some interesting information about this subject that I would like to add to the discussion. It's just that I don't think this mission is really appropriate for the live section. What do the rest of you think?I agree with moving this one to the Science section and leave the launch thread where it is now (and I might even look into moving the Chang'e 1/2 threads as well, if others agree).
So one of the interesting things to me is that their lunar program has so far not really been run for scientific purposes but for engineering purposes. That's consistent with what I have assumed (and wrote about). But it was interesting to have this confirmed.Hopefully the scientists will be heavily involved in selecting the landing site for CE-5. It would be good to have it go to a high value site rather than something the engineers want to do.
So one interesting bit of information is that apparently space sciences (Earth science, heliophysics and astronomy) is under the auspices of the Chinese Academy of Sciences. I don't know how that is run, but it is essentially led by the scientists. However, planetary science is done by the same people who do their human spaceflight program, and that's under a separate organization, which I believe is part of the People's Liberation Army. That organization does not really have many scientists working for it.
there was an interesting article on the subject of who's in control of Chinese space science a few years ago in Nature: "China forges ahead in space"http://www.nature.com/news/china-forges-ahead-in-space-1.9359
Last year, when a fault, the rabbit has done a good mission. We speculate that a wire is small stones hurt, causing the battery voltage of 5 volts from the original down to 4.5 volts. We think a lot of ways, but still can not recover.
dunno how reliable this is, but concerning Yutu's problem this link states, in a Google translation:QuoteLast year, when a fault, the rabbit has done a good mission. We speculate that a wire is small stones hurt, causing the battery voltage of 5 volts from the original down to 4.5 volts. We think a lot of ways, but still can not recover.http://dzb.jinbaonet.com/html/2015-04/15/content_281970.htmso it would appear that a rock clipped some wire, and the batteries (solar panels?) could no longer provide the necessary voltage.
Quote from: plutogno on 04/19/2015 09:02 amdunno how reliable this is, but concerning Yutu's problem this link states, in a Google translation:QuoteLast year, when a fault, the rabbit has done a good mission. We speculate that a wire is small stones hurt, causing the battery voltage of 5 volts from the original down to 4.5 volts. We think a lot of ways, but still can not recover.http://dzb.jinbaonet.com/html/2015-04/15/content_281970.htmso it would appear that a rock clipped some wire, and the batteries (solar panels?) could no longer provide the necessary voltage.Perhaps "small stones hurt" is "abraded by grit" ?
How the instruments fared in the second half of 2014 is unknown, but the core systems of Yutu – its main computer and communications system – kept operating well past the expected duration of three months. Signals from Yutu could be received by radio operators on Earth almost every lunar day as the Chinese mission team kept operating the rover to learn valuable lessons for future robotic missions to the Moon and other targets.
I was surprised to read, catching up to some topics, that Yutu is still alive and talking.March 9, 2015, http://www.spaceflight101.com/change-3-mission-updates.htmlhttps://twitter.com/uhf_satcom/status/573237795814301697QuoteHow the instruments fared in the second half of 2014 is unknown, but the core systems of Yutu – its main computer and communications system – kept operating well past the expected duration of three months. Signals from Yutu could be received by radio operators on Earth almost every lunar day as the Chinese mission team kept operating the rover to learn valuable lessons for future robotic missions to the Moon and other targets.
Robust little rover.