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CPPCC National Committee member and chief scientist of space science and deep space exploration of the Chinese Academy of Space Technology Ye Peijian revealed to reporters on the 4th that the development of Chang'e-3 has progressed smoothly and is expected to be launched on schedule in 2013. The landing site for the moon is selected as the Hongwan area.
Ye Peijian said that the weight of China's first lunar rover on Chang'e III will reach more than 100 kilograms, and it will work on the moon for more than three months. It will solicit names from the public in the future.
No.3
Is a "legal" aircraft
Like the more than 100 satellites launched by China, Chang’e 1 and 2 are all orbiting aircraft, flying around the earth, or flying around the moon, and do not land, so there are no “legs†(for landing on the ground). Bracket). Other returning satellites and spaceships are equipped with parachutes, so there are no "legs."
"The Chang'e III is not the same as them, but it is legged." Ye Peijian said that because it is necessary to land on the moon whose gravity is only one-sixth of the earth, the shape and function of the Chang'e III has been specially designed. Unlike previous aircraft.
Second, after Chang'e III landed on the moon, many scientific explorations were carried out, so many scientific detection instruments would be carried. Ye Peijian said that these instruments will be used to detect the topography of the moon, the moon's survival, and use the moon's advantage of not blocking the atmosphere to observe further space.
year 2013
Send Sanji to the Moon
It is reported that Chang'e III will carry the first Chinese caddy. After the Chang'e III landed on the surface of the moon, the lander will release the lunar rover and the lunar rover will walk on the moon.
Ye Peijian stated that the lunar rover’s walking must overcome many difficulties. "It will recognize the road, it cannot fall into the pit, and not too big a pit will have to climb. The small stone will climb, and the big stone will go around."
Ye Peijian also said that the name of China’s first lunar rover will be finalized by soliciting opinions from the public. "We definitely want to solicit opinions from everyone. To get a good name, it's like we named the lunar exploration project.
Ye Peijian stated that based on the current progress, it is expected that in 2013, China should be able to send Chang'e 3 to the moon.
The third phase
Automatically return after sample collection
Ye Peijian also revealed that if the Chang'e III mission is completed smoothly, the Chang'e IV, which was originally planned to be used as the backup star for the No. 3 satellite, will be equipped with equipment different from the No. 3 to be lifted to expand the research content of the Chinese moon exploration.
The China-determined lunar exploration program is divided into three phases. The first phase of the project is “circleâ€, that is, moon detection; the second phase is “fallingâ€, that is, the implementation of lunar soft landing and automatic inspection survey; the third phase is "Back" means that the lunar sample will automatically return after sampling. Chang'e III and IV are important contents of the second phase of the project.
Ye Peijian served as the chief commander and chief designer of the satellite system of Chang'e I, the general commander and chief designer of the Chang'e II Satellite System and the Chang'e III Satellite System.
Next year, there will be a Chinese car on the moon
According to experts, Chang'e III is expected to be launched in 2013 and will be carrying China's first-month caddy.
Drive on the Moon and solve these problems
Puzzle one:
The car should stay on the moon for 3 months
It takes more than 28 days for the moon to make a circle around the earth, and the moon rotates for 28 days. In other words, the day and night on the moon is equivalent to about 14 days on Earth. Solar powered moon vehicles have to overcome the problem of long night hours.
“Our aircraft can only be guaranteed to be in the daytime if it only works on the moon for 14 days. But now it is at least 3 months or more, about the equivalent of 6 days and nights of the moon. There is no long time for the sun, and landing Both the device and the lunar rover rely on the sun to generate electricity. This problem must be solved," Ye Peijian said.
Puzzle two:
The temperature difference between day and night is over 300 degrees
The temperature difference between day and night on the moon is very large. The night's temperature is minus 170 degrees Celsius. At noon the sun will reach a hundred and a few hundred degrees Celsius. How to keep the equipment operating under extreme temperature conditions also needs to be resolved.
Ye Peijian revealed that in order to solve this problem, technicians have designed retractable solar panels for the lunar rover. They are deployed during daytime power generation and closed at night, “so as to pack the equipment inside.†At the same time, the windsurfing board can also adjust its angle to avoid being heated too much by sunlight.
Problem 3:
Finding Your Way on the Moon
Because of the special geological environment of the moon, the lunar rover has special design on the walking mechanism and on the recognition and navigation system. Ye Peijian said that the lunar soil is very soft. If you walk on the moon, you must have a good walking mechanism. "This wheel is not the same as a general wheel. We must design a special wheel that can walk on the moon."
In addition, the lunar rover also installed an advanced identification system and navigation system to analyze the sights it saw so that it can plan its own route and proceed safely and smoothly. Ye Peijian revealed that the lunar rover now has a certain ability to overcome obstacles and climbability, and can climb over small stones and slopes.
Problem 4:
It can also control it on Earth
　　 As the first Chinese probe to land on the moon, in order to strengthen the safety factor, technicians also designed a ground support system for the lunar rover. On the ground, they can also control the direction and movement of the lunar rover. The lunar rover passed real-time data back to the ground. .
In terms of communication, "double insurance" has also been designed. The lunar rover can communicate directly with the ground and can communicate with the earth through the lander.
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