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On December 15, 2013, the large screen of the Beijing Flight Control Center displayed the "Yutu" lunar rover captured by the camera on the Chang'e-3 lander. Before going to sleep on the second moonlit night, China's first lunar rover "Yutu" broke down. The National Defense Science and Industry Bureau said on January 25 that due to the influence of the complex lunar environment, the lunar rover ’s institutional control has become abnormal, and relevant parties are organizing experts to conduct investigations.
The conversation between Jade Rabbit and Chang'e
After the last cold moon night, "Yutu" successfully talked with "Chang'e" for the first time on the 23rd of this month, and this is also the first "two-device" communication completed by Chinese spacecraft on extraterrestrial objects, for future deep space exploration and The establishment of the space station laid a solid foundation for communication.
It is reported that what "Yutu" said to "Chang'e" is transmitted through the UHF frequency band communication link. This is a single communication device, that is, only Yutu can speak to Chang'e. Chang'e can hear it, but cannot directly reply.
According to experts, "Chang'e" didn't receive the greeting of "Jade Rabbit" until the 23rd, because the Chang'e-3 probe must first complete a soft landing, and its own energy is limited. After ensuring a successful soft landing, UHF reception The aircraft can be officially turned on, so as to realize the communication between the inspector and the lander.
Complete two world premieres
According to experts from the National Defense Science and Industry Bureau, during the second month and day after the autonomous wake-up, the scientific load on the Chang'e-3 probe was turned on and continued to carry out the established scientific exploration mission: the moon-based optical telescope on the lander launched Sky observation, extreme ultraviolet camera observation of the earth's plasma layer, these two are the world's first exploration activities carried out on the lunar surface.
During this period, the lunar rover conducted inspections and carried out related detection work at multiple detection points. The lunar radar, panoramic camera, particle-excited X-ray spectrometer, and infrared imaging spectrometer all obtained a large amount of scientific detection data.
Since the Chang'e-3 lunar probe has achieved a soft landing on the lunar surface on December 14, 2013, the lander and lunar rover have completed two days of work.
An abnormal lunar rover
The reporter also learned from the National Defense Science and Industry Bureau that in the early morning of yesterday, the Chang'e-3 lunar rover entered the second moonlight sleep. However, before dormancy, due to the influence of the complex lunar environment, the lunar rover's institutional control was abnormal, and relevant parties are organizing experts to conduct investigations.
"Chang'e-3 is one of the most complex and difficult tasks in China's spaceflight. It is normal to have accidents," said Yang Yuguang, a researcher at the Second Academy of China Aerospace Science and Industry Corporation.
"Because the angle between the moon's rotation axis and the zodiac is very small, the moon's topography has a greater impact on temperature, and some aspects of the environment are worse than Mars." Yang Yuguang said that before the "Yutu" landed on the moon, only the world Some Soviet Unions have successfully carried out unmanned lunar rover detection activities, and human knowledge of lunar environmental factors such as radiation, moon dust, and temperature differences is still very limited.
Wang Zhaokui, an associate professor at the School of Aeronautics and Astronautics at Tsinghua University, believes that the National Defense Science and Industry Bureau released this news in the first time, which embodies the opening of China's aerospace industry. "In the world ’s early lunar exploration activities, the detectors that failed missions did not even have numbers, nor will they be announced. With the development of the aerospace industry, we can face victory and setbacks with a peaceful attitude. This is a scientific attitude of seeking truth and being pragmatic. , Also shows that we have full confidence in the future. "
Interestingly, the netizen whose name is "Moon Rover Yutu" posted a Weibo with the content "Ah ... I'm broken", which was widely reposted by netizens and encouraged them to "stand up."
Some netizens posted on Weibo, "Come on Tutu! We are about to celebrate the New Year, and we still want to celebrate the New Year with you! You must get well, and we will celebrate the New Year together when we are fine. We put beautiful fireworks on the earth. Look. "
Abnormal control of the lunar rover mechanism