“The Goddess of Moon Exploration” Zhang Yuhua: If I can land on the moon, I want to see if the Yutu can be repaired.

Original title: “Moon Goddess Exploration” Zhang Yuhua: If I can land on the moon, I want to see if the Yutu can be repaired

I was once asked: if you can go to the moon, what will you do? Zhang Yuhua’s first thought was to see if his Yutu number could be repaired.

At 1:59 AM on December 17, Returner Chang’e-5 landed safely in the planned area of ​​Siziwang Banner, Inner Mongolia, marking the successful completion of China’s first mission to sample and return extraterrestrial objects. the Shanghai Popular Science Forum “Revealing the story behind Chang’e 5” today, “Faculty” just returned to Shanghai from Beijing, ChinaAerospace Science and TechnologyZhang Yuhua, deputy commander-in-chief of the Chang’e-5 detector system of the Group’s eighth hospital, delivered a new scientific lecture to the audience, revealing the technical highlights and scientific research stories behind the Chang’e-5 , the technical details of the encounter and docking of the Chang’e-5, and also revealed the latest progress of the exploration of Mars “Tianwen-1” and the challenges, perseverance and exploration it has faced in the field of flight manned spacecraft and lunar exploration over the years.

China’s aerospace industry has always developed, and of course there are somefrustration. When talking about the failure of the Yutu, Zhang Yuhua still regretted it. In 2013, the Yutu lunar rover successfully landed on the moon with Chang’e-3, but after walking about 114 meters, the Yutu suddenly became abnormal and could not move. In later studies, it was found that the reason why Yutu did not achieve the expected results was that the lunar surface temperature was not well estimated at the time. The lunar surface temperature can reach about 110 degrees under sunlight. The upper wire will become softer and longer, and the insulation outside the wire will weaken. Another reason may be that ground operators at the time had too much control over the Yutu lunar rover, and they only advanced without retreating. The Yutu car was going too fast when it was moving forward. As a result, the cable hit the rock and pulled the cable. Also, the surface temperature of the moon was high. After throwing it away, the cable broke after a few walks. As a result, Yutu’s entire car short-circuited and couldn’t run on electricity. After that, Yutu continued to “survive” tenaciously for over two years, proving that the power supply and the measurement and control functions at that time were still good, but they could no longer move.

Yutu’s exploration also helped the later Yutu 2 to be able to stabilize for a long time.jobsHe provided valuable experience.During the development of Yutu II, he directedteamOptimal design, As much as possible to reduce the exposure of the cable, but also to improve the protection and protection functions of the cable. “Mother Yutu” Zhang Yuhua also gave a special lesson to the relevant command center personnel, explaining how to drive the lunar rover well, which requires careful operation, close surveillance and security. Today, Yutu II has fulfilled his mission, has successfully completed his mission, and is still in back service.

(Article source: Oriental Net)

(Editor in charge: DF353)