Presentations at LPSC on Chang'e-3.
in the latest issue of the Chinese Journal of Space Science: ChangE-3 Landers scientific payloadsthe full paper is not yet available, but it should be in a few days
故障尚未解决,第二个月夜却要到来。当初,科研人员对月球车正常情况下进入月夜的姿态有三个设计:一是车头朝南,二是车身的左右侧倾斜在负二度到正一度之间,三是太阳翼和桅杆要收拢。玉兔生病后,三个条件都无法满足。Failure is not resolved, the second Moon night has to come. At first, researchers under normal circumstances rover attitude into the moon night with three designs: first, front facing south; second, the left and right side of the body tilt between minus two degrees to plus one; third, solar wing and mast are folded. "Rabbit" after illness, three conditions are not met.
...But the rover did not arrive at the crater, or even reach the lander. It stopped as it was getting close to the lander, apparently because the electronics associated with moving its wheels and solar panels, so probably an important central control unit, failed at that point....At any rate, it soon became apparent that the rover could neither move nor fold itself up to protect against the cold of the night....After a seemingly interminable wait the sun rose again, and a few days later on 12 February both lander and rover woke up. Yutu was more robust than expected. All its instruments, even the fragile cameras, were fine, but it couldnt move. I dont know if the lack of movement extends to the robotic arm with the APXS....The rover shut down near sunset on 23 February and woke up again on 13 March, three days after sunrise, but this time much more feebly. Nevertheless, intervention from Earth, I think in the form of a computer re-boot, again restored full operation.
...Yu Dengyun, deputy chief engineer of the Chinese Lunar Exploration Program, said Tuesday that, although Yutu cannot move due to unresolved mechanical problems, it has not lost its [...snip...]http://english.cri.cn/6909/2014/04/02/2361s820168.htm
Yutu started its fourth dormancy on March 24. It's supposed to wake up around April 10 of this year.However, Yu pointed out that it might need more resting time, since the rover cannot adjust its solar array to collect enough solar electric power quickly.
http://www.stdaily.com/jbsj/yb/201404/t20140417_690814.shtml对于嫦娥玉兔来说,这次日食发生时,它们才从月夜中唤醒没多久。仿佛刚到上午,天又黑了。杨宇光说,由于探测器所处区域被地球阴影覆盖了几个小时,会出现温度骤降的情况。但嫦娥玉兔原本就是按照月昼、月夜两种极限工况设计的,应对这样的温度不会有太大问题。此外,日食期间探测器供电系统失去了太阳能,杨宇光认为,为避免出现能源问题,可以采取不做动作、关闭科学载荷等方式降低能耗。就好比让嫦娥玉兔打个盹,睡个回笼觉。他说。据悉,嫦娥玉兔已安全度过这次考验。yutu have alive,but we don't know it took pictures or not